Hearing aid having combined antennas

Abstract

A hearing aid having a hearing aid housing, includes: a microphone; a processing unit configured to process an audio signal for compensating a hearing loss of a user; a battery provided closer to a second end of the hearing aid housing than to a first end of the hearing aid housing; one or more wireless communication units for wireless communication; at least a part of a first antenna for electromagnetic field emission and/or electromagnetic field reception, the at least a part of the first antenna being interconnected with one of the one or more wireless communication units; and a second antenna for electromagnetic field emission and/or electromagnetic field reception, the second antenna being interconnected with one of the one or more wireless communication units; wherein the second antenna is between a center axis of the battery and the second end of the hearing aid.

Claims

1. A hearing aid having a hearing aid housing, the hearing aid housing having a first end and a second end, the hearing aid comprising: a microphone configured to receive an audio signal; a processing unit configured to process the audio signal for compensating a hearing loss of a user; a battery in the hearing aid housing; one or more wireless communication units for wireless communication; at least a part of a first antenna for electromagnetic field emission and/or electromagnetic field reception, the first antenna coupled with one of the one or more wireless communication units; and a second antenna coupled with one of the one or more wireless communication units, wherein the second antenna is between at least a part of the battery and the second end of the hearing aid housing, wherein the second antenna comprises a magnetic core and an electrical conductor around the magnetic core; wherein the first antenna has a longitudinal extension in a first direction, and wherein the second antenna has a longitudinal extension in a second direction.

2. The hearing aid according to claim 1, further comprising an earpiece coupled to the hearing aid housing via a cable, wherein the earpiece comprises a receiver and is configured to be at least partially inserted into an ear canal of the user.

3. The hearing aid according to claim 1, wherein the hearing aid housing is a first hearing aid part configured to be positioned behind an ear of the user, and wherein the hearing aid further comprises: a second hearing aid part configured to be positioned in the ear of the user; and a coupling element coupling the first hearing aid part and the second hearing aid part.

4. The hearing aid according to claim 3, wherein the first hearing aid part comprises the battery, and wherein the second hearing aid part comprises a speaker.

5. The hearing aid according to claim 3, wherein the coupling element comprises at least a part of the first antenna.

6. The hearing aid according to claim 1, wherein the first antenna is provided in one or more planes, the one or more planes forming an angle with the second direction, wherein the angle is in a range of 90 degrees+/−35 degrees.

7. The hearing aid according to claim 1, wherein the first antenna is configured for radiation in a first frequency range, and the second antenna is configured for radiation in a second frequency range.

8. The hearing aid according to claim 1, wherein the first antenna is an electric antenna and the second antenna is a magnetic antenna.

9. The hearing aid according to claim 1, wherein the hearing aid housing has a surface configured to abut against the user of the hearing aid, and wherein the second antenna has a longitudinal axis forming a non-zero angle relative to a plane of the surface.

10. The hearing aid according to claim 9, wherein the longitudinal axis of the second antenna is perpendicular to the plane of the surface.

11. A binaural hearing aid system comprising a first hearing aid and a second hearing aid to be provided at a first ear and a second ear of the user, respectively, wherein one or each of the hearing aids is a hearing aid according to claim 1.

12. The hearing aid according to claim 1, wherein the first antenna is configured to operate at a frequency above 800 MHz.

13. The hearing aid according to claim 1, wherein the second antenna is configured to operate at a frequency below 100 MHz.

14. The hearing aid according to claim 1, wherein the second antenna is configured to operate at a frequency between 1 MHz and 100 MHz.

15. The hearing aid according to claim 1, wherein the first antenna is configured for data communication at a first bit rate, and wherein the second antenna is configured for data communication at a second bit rate, the second bit rate being different from the first bit rate.

16. The hearing aid according to claim 1, wherein the second antenna has an elongated configuration extending in a direction that is parallel to an axis of the battery.

17. The hearing aid according to claim 1, wherein the hearing aid housing has a surface configured to abut against the user of the hearing aid, and wherein the second antenna has a longitudinal axis forming a non-zero angle relative to a plane of the surface.

18. The hearing aid according to claim 1, wherein the first antenna is configured to operate at a frequency of 2.4 GHz.

19. The hearing aid according to claim 1, wherein the first antenna is located closer to a top side of the hearing aid housing than a bottom side of the hearing aid housing.

20. A hearing aid having a hearing aid housing, the hearing aid housing having a first end and a second end, the hearing aid comprising: a microphone configured to receive an audio signal; a processing unit configured to process the audio signal for compensating a hearing loss of a user: a battery in the hearing aid housing; one or more wireless communication units for wireless communication; at least a part of a first antenna for electromagnetic field emission and/or electromagnetic field reception, the first antenna coupled with one of the one or more wireless communication units; and a second antenna coupled with one of the one or more wireless communication units, wherein the second antenna is between at least a part of the battery and the second end of the hearing aid housing, wherein the second antenna comprises a magnetic core and an electrical conductor around the magnetic core; wherein the first antenna is configured to operate at a frequency above 800 MHz.

21. The hearing aid according to claim 20, wherein the first antenna is configured to operate at 2.4 GHz.

22. The hearing aid according to claim 20, further comprising an earpiece coupled to the hearing aid housing via a cable, wherein the earpiece comprises a receiver and is configured to be at least partially inserted into an ear canal of the user.

23. The hearing aid according to claim 20, wherein the hearing aid housing is a first hearing aid part configured to be positioned behind an ear of the user, and wherein the hearing aid further comprises: a second hearing aid part configured to be positioned in the ear of the user; and a coupling element coupling the first hearing aid part and the second hearing aid part.

24. The hearing aid according to claim 23, wherein the first hearing aid part comprises the battery, and wherein the second hearing aid part comprises a speaker.

25. The hearing aid according to claim 23, wherein the coupling element comprises at least a part of the first antenna.

26. The hearing aid according to claim 20, wherein the second antenna is configured to operate at a frequency below 100 MHz.

27. The hearing aid according to claim 20, wherein the second antenna is configured to operate at a frequency between 1 MHz and 100 MHz.

28. The hearing aid according to claim 20, wherein the first antenna is configured for data communication at a first bit rate, and wherein the second antenna is configured for data communication at a second bit rate, the second bit rate being different from the first bit rate.

29. The hearing aid according to claim 20, wherein the second antenna has an elongated configuration extending in a direction that is parallel to an axis of the battery.

30. The hearing aid according to claim 20, wherein the hearing aid housing has a surface configured to abut against the user of the hearing aid, and wherein the second antenna has a longitudinal axis forming a non-zero angle relative to a plane of the surface.

31. The hearing aid according to claim 20, wherein the first antenna is located closer to a top side of the hearing aid housing than a bottom side of the hearing aid housing.

32. A hearing aid having a hearing aid housing, the hearing aid housing having a first end and a second end, the hearing aid comprising: a microphone configured to receive an audio signal; a processing unit configured to process the audio signal for compensating a hearing loss of a user; a battery in the hearing aid housing; one or more wireless communication units for wireless communication; at least a part of a first antenna for electromagnetic field emission and/or electromagnetic field reception, the first antenna coupled with one of the one or more wireless communication units; and a second antenna coupled with one of the one or more wireless communication units, wherein the second antenna is between at least a part of the battery and the second end of the hearing aid housing, wherein the second antenna comprises a magnetic core and an electrical conductor around the magnetic core; wherein the second antenna is configured to operate at a frequency below 100 MHz.

33. The hearing aid according to claim 32, wherein the second antenna is configured to operate between 1 MHz and 100 MHz.

34. The hearing aid according to claim 32, further comprising an earpiece coupled to the hearing aid housing via a cable, wherein the earpiece comprises a receiver and is configured to be at least partially inserted into an ear canal of the user.

35. The hearing aid according to claim 32, wherein the hearing aid housing is a first hearing aid part configured to be positioned behind an ear of the user, and wherein the hearing aid further comprises: a second hearing aid part configured to be positioned in the ear of the user; and a coupling element coupling the first hearing aid part and the second hearing aid part.

36. The hearing aid according to claim 35, wherein the first hearing aid part comprises the battery, and wherein the second hearing aid part comprises a speaker.

37. The hearing aid according to claim 35, wherein the coupling element comprises at least a part of the first antenna.

38. The hearing aid according to claim 32, wherein the first antenna is configured for data communication at a first bit rate, and wherein the second antenna is configured for data communication at a second bit rate, the second bit rate being different from the first bit rate.

39. The hearing aid according to claim 32, wherein the second antenna has an elongated configuration extending in a direction that is parallel to an axis of the battery.

40. The hearing aid according to claim 32, wherein the hearing aid housing has a surface configured to abut against the user of the hearing aid, and wherein the second antenna has a longitudinal axis forming a non-zero angle relative to a plane of the surface.

41. The hearing aid according to claim 32, wherein the first antenna is located closer to a top side of the hearing aid housing than a bottom side of the hearing aid housing.

42. The hearing aid according to claim 32, wherein the first antenna is configured to operate at a frequency of 2.4 GHz.

43. A hearing aid having a hearing aid housing, the hearing aid housing having a first end and a second end, the hearing aid comprising: a microphone configured to receive an audio signal; a processing unit configured to process the audio signal for compensating a hearing loss of a user; a battery in the hearing aid housing; one or more wireless communication units for wireless communication; at least a part of a first antenna for electromagnetic field emission and/or electromagnetic field reception, the first antenna coupled with one of the one or more wireless communication units; and a second antenna coupled with one of the one or more wireless communication units, wherein the second antenna is between at least a part of the battery and the second end of the hearing aid housing, wherein the second antenna comprises a magnetic core and an electrical conductor around the magnetic core; wherein the first antenna is configured for data communication at a first bit rate.

44. The hearing aid according to claim 43, wherein the second antenna is configured for data communication at a second bit rate, the second bit rate being larger than the first bit rate.

45. The hearing aid according to claim 43, wherein the second antenna is configured for data communication at a second bit rate, the second bit rate being larger than the first bit rate by a factor of at least 10.

46. The hearing aid according to claim 43, further comprising an earpiece coupled to the hearing aid housing via a cable, wherein the earpiece comprises a receiver and is configured to be at least partially inserted into an ear canal of the user.

47. The hearing aid according to claim 43, wherein the hearing aid housing is a first hearing aid part configured to be positioned behind an ear of the user, and wherein the hearing aid further comprises: a second hearing aid part configured to be positioned in the ear of the user; and a coupling element coupling the first hearing aid part and the second hearing aid part.

48. The hearing aid according to claim 47, wherein the first hearing aid part comprises the battery, and wherein the second hearing aid part comprises a speaker.

49. The hearing aid according to claim 47, wherein the coupling element comprises at least a part of the first antenna.

50. The hearing aid according to claim 43, wherein the second antenna is configured to operate at a frequency below 100 MHz.

51. The hearing aid according to claim 43, wherein the second antenna is configured to operate at a frequency between 1 MHz and 100 MHz.

52. The hearing aid according to claim 43, wherein the first antenna is configured to operate at a frequency above 800 MHz.

53. The hearing aid according to claim 43, wherein the first antenna is configured to operate at a frequency of 2.4 GHz.

54. The hearing aid according to claim 43, wherein the second antenna has an elongated configuration extending in a direction that is parallel to an axis of the battery.

55. The hearing aid according to claim 43, wherein the hearing aid housing has a surface configured to abut against the user of the hearing aid, and wherein the second antenna has a longitudinal axis forming a non-zero angle relative to a plane of the surface.

56. The hearing aid according to claim 43, wherein the first antenna is located closer to a top side of the hearing aid housing than a bottom side of the hearing aid housing.

57. A hearing aid having a hearing aid housing, the hearing aid housing having a first end and a second end, the hearing aid comprising: a microphone configured to receive an audio signal; a processing unit configured to process the audio signal for compensating a hearing loss of a user; a battery in the hearing aid housing; one or more wireless communication units for wireless communication; at least a part of a first antenna for electromagnetic field emission and/or electromagnetic field reception, the first antenna coupled with one of the one or more wireless communication units; and a second antenna coupled with one of the one or more wireless communication units, wherein the second antenna is between at least a part of the battery and the second end of the hearing aid housing, wherein the second antenna comprises a magnetic core and an electrical conductor around the magnetic core; wherein the second antenna has an elongated configuration extending in a direction that is parallel to an axis of the battery.

58. A hearing aid having a hearing aid housing, the hearing aid housing having a first end and a second end, the hearing aid comprising: a microphone configured to receive an audio signal; a processing unit configured to process the audio signal for compensating a hearing loss of a user; a battery in the hearing aid housing; one or more wireless communication units for wireless communication; at least a part of a first antenna for electromagnetic field emission and/or electromagnetic field reception, the first antenna coupled with one of the one or more wireless communication units; and a second antenna coupled with one of the one or more wireless communication units, wherein the second antenna is between at least a part of the battery and the second end of the hearing aid housing, wherein the second antenna comprises a magnetic core and an electrical conductor around the magnetic core; wherein the first antenna is located closer to a top side of the hearing aid housing than a bottom side of the hearing aid housing.

59. A hearing aid having a hearing aid housing, the hearing aid housing having a first end and a second end, the hearing aid comprising: a microphone configured to receive an audio signal; a processing unit configured to process the audio signal for compensating a hearing loss of a user; a battery in the hearing aid housing; one or more wireless communication units for wireless communication; at least a part of a first antenna for electromagnetic field emission and/or electromagnetic field reception, the first antenna coupled with one of the one or more wireless communication units; a second antenna coupled with one of the one or more wireless communication units, wherein the second antenna is between at least a part of the battery and the second end of the hearing aid housing; and an earpiece coupled to the hearing aid housing via a cable, wherein the earpiece comprises a receiver and is configured to be at least partially inserted into an ear canal of the user; wherein the first antenna has a longitudinal extension in a first direction, and wherein the second antenna has a longitudinal extension in a second direction.

60. The hearing aid according to claim 59, wherein the second antenna comprises a magnetic antenna.

61. The hearing aid according to claim 59, wherein the hearing aid housing is configured to be positioned behind an ear of the user.

62. The hearing aid according to claim 59, wherein a center of the battery is closer to the second end of the hearing aid housing than to the first end of the hearing aid housing.

63. The hearing aid according to claim 59, wherein the cable comprises at least a part of the first antenna.

64. The hearing aid according to claim 59, wherein the first antenna is provided in one or more planes, the one or more planes forming an angle with the second direction, wherein the angle is in a range of 90 degrees+/−35 degrees.

65. The hearing aid according to claim 59, wherein the first antenna is configured for radiation in a first frequency range, and the second antenna is configured for radiation in a second frequency range.

66. The hearing aid according to claim 59, wherein the hearing aid housing has a surface configured to abut against the user of the hearing aid, and wherein the second antenna has a longitudinal axis forming a non-zero angle relative to a plane of the surface.

67. The hearing aid according to claim 66, wherein the longitudinal axis of the second antenna is perpendicular to the plane of the surface.

68. The hearing aid according to claim 59, wherein the first antenna is located closer to a top side of the hearing aid housing than a bottom side of the hearing aid housing.

69. A binaural hearing aid system comprising a first hearing aid and a second hearing aid to be provided at a first ear and a second ear of the user, respectively, wherein one or each of the hearing aids is a hearing aid according to claim 59.

70. The hearing aid according to claim 59, wherein the first antenna is configured to operate at a frequency above 800 MHz.

71. The hearing aid according to claim 59, wherein the second antenna is configured to operate at a frequency below 100 MHz.

72. The hearing aid according to claim 59, wherein the second antenna is configured to operate at a frequency between 1 MHz and 100 MHz.

73. The hearing aid according to claim 59, wherein the first antenna is configured for data communication at a first bit rate, and wherein the second antenna is configured for data communication at a second bit rate, the second bit rate being different from the first bit rate.

74. The hearing aid according to claim 59, wherein the second antenna has an elongated configuration extending in a direction that is parallel to an axis of the battery.

75. The hearing aid according to claim 59, wherein the first antenna is configured to operate at a frequency of 2.4 GHz.

76. A hearing aid having a hearing aid housing, the hearing aid housing having a first end and a second end, the hearing aid comprising: a microphone configured to receive an audio signal; a processing unit configured to process the audio signal for compensating a hearing loss of a user; a battery in the hearing aid housing; one or more wireless communication units for wireless communication; at least a part of a first antenna for electromagnetic field emission and/or electromagnetic field reception, the first antenna coupled with one of the one or more wireless communication units; a second antenna coupled with one of the one or more wireless communication units, wherein the second antenna is between at least a part of the battery and the second end of the hearing aid housing; and an earpiece coupled to the hearing aid housing via a cable, wherein the earpiece comprises a receiver and is configured to be at least partially inserted into an ear canal of the user; wherein the first antenna is an electric antenna and the second antenna is a magnetic antenna.

77. A hearing aid having a hearing aid housing, the hearing aid housing having a first end and a second end, the hearing aid comprising: a microphone configured to receive an audio signal; a processing unit configured to process the audio signal for compensating a hearing loss of a user; a battery in the hearing aid housing; one or more wireless communication units for wireless communication; at least a part of a first antenna for electromagnetic field emission and/or electromagnetic field reception, the first antenna coupled with one of the one or more wireless communication units; a second antenna coupled with one of the one or more wireless communication units, wherein the second antenna is between at least a part of the battery and the second end of the hearing aid housing; and an earpiece coupled to the hearing aid housing via a cable, wherein the earpiece comprises a receiver and is configured to be at least partially inserted into an ear canal of the user; wherein the first antenna is configured to operate at a frequency above 800 MHz.

78. The hearing aid according to claim 77, wherein the first antenna is configured to operate at 2.4 GHz.

79. The hearing aid according to claim 77, wherein the second antenna is configured to operate at a frequency below 100 MHz.

80. The hearing aid according to claim 77, wherein the second antenna is configured to operate at a frequency between 1 MHz and 100 MHz.

81. The hearing aid according to claim 77, wherein the first antenna is configured for data communication at a first bit rate, and wherein the second antenna is configured for data communication at a second bit rate, the second bit rate being different from the first bit rate.

82. The hearing aid according to claim 77, wherein the second antenna has an elongated configuration extending in a direction that is parallel to an axis of the battery.

83. The hearing aid according to claim 77, wherein the hearing aid housing has a surface configured to abut against the user of the hearing aid, and wherein the second antenna has a longitudinal axis forming a non-zero angle relative to a plane of the surface.

84. The hearing aid according to claim 77, wherein the first antenna is located closer to a top side of the hearing aid housing than a bottom side of the hearing aid housing.

85. A hearing aid having a hearing aid housing, the hearing aid housing having a first end and a second end, the hearing aid comprising: a microphone configured to receive an audio signal; a processing unit configured to process the audio signal for compensating a hearing loss of a user; a battery in the hearing aid housing; one or more wireless communication units for wireless communication; at least a part of a first antenna for electromagnetic field emission and/or electromagnetic field reception, the first antenna coupled with one of the one or more wireless communication units; a second antenna coupled with one of the one or more wireless communication units, wherein the second antenna is between at least a part of the battery and the second end of the hearing aid housing; and an earpiece coupled to the hearing aid housing via a cable, wherein the earpiece comprises a receiver and is configured to be at least partially inserted into an ear canal of the user; wherein the second antenna is configured to operate at a frequency below 100 MHz.

86. The hearing aid according to claim 85, wherein the second antenna is configured to operate between 1 MHz and 100 MHz.

87. The hearing aid according to claim 85, wherein the first antenna is configured for data communication at a first bit rate, and wherein the second antenna is configured for data communication at a second bit rate, the second bit rate being different from the first bit rate.

88. The hearing aid according to claim 85, wherein the second antenna has an elongated configuration extending in a direction that is parallel to an axis of the battery.

89. The hearing aid according to claim 85, wherein the hearing aid housing has a surface configured to abut against the user of the hearing aid, and wherein the second antenna has a longitudinal axis forming a non-zero angle relative to a plane of the surface.

90. The hearing aid according to claim 85, wherein the first antenna is located closer to a top side of the hearing aid housing than a bottom side of the hearing aid housing.

91. The hearing aid according to claim 85, wherein the first antenna is configured to operate at a frequency of 2.4 GHz.

92. A hearing aid having a hearing aid housing, the hearing aid housing having a first end and a second end, the hearing aid comprising: a microphone configured to receive an audio signal; a processing unit configured to process the audio signal for compensating a hearing loss of a user; a battery in the hearing aid housing; one or more wireless communication units for wireless communication; at least a part of a first antenna for electromagnetic field emission and/or electromagnetic field reception, the first antenna coupled with one of the one or more wireless communication units; a second antenna coupled with one of the one or more wireless communication units, wherein the second antenna is between at least a part of the battery and the second end of the hearing aid housing; and an earpiece coupled to the hearing aid housing via a cable, wherein the earpiece comprises a receiver and is configured to be at least partially inserted into an ear canal of the user; wherein the first antenna is configured for data communication at a first bit rate.

93. The hearing aid according to claim 92, wherein the second antenna is configured for data communication at a second bit rate, the second bit rate being larger than the first bit rate.

94. The hearing aid according to claim 92, wherein the second antenna is configured for data communication at a second bit rate, the second bit rate being larger than the first bit rate by a factor of at least 10.

95. The hearing aid according to claim 92, wherein the second antenna is configured to operate at a frequency below 100 MHz.

96. The hearing aid according to claim 92, wherein the second antenna is configured to operate at a frequency between 1 MHz and 100 MHz.

97. The hearing aid according to claim 92, wherein the first antenna is configured to operate at a frequency above 800 MHz.

98. The hearing aid according to claim 92, wherein the first antenna is configured to operate at a frequency of 2.4 GHz.

99. The hearing aid according to claim 92, wherein the second antenna has an elongated configuration extending in a direction that is parallel to an axis of the battery.

100. The hearing aid according to claim 92, wherein the hearing aid housing has a surface configured to abut against the user of the hearing aid, and wherein the second antenna has a longitudinal axis forming a non-zero angle relative to a plane of the surface.

101. The hearing aid according to claim 92, wherein the first antenna is located closer to a top side of the hearing aid housing than a bottom side of the hearing aid housing.

102. A hearing aid having a hearing aid housing, the hearing aid housing having a first end and a second end, the hearing aid comprising: a microphone configured to receive an audio signal; a processing unit configured to process the audio signal for compensating a hearing loss of a user; a battery in the hearing aid housing; one or more wireless communication units for wireless communication; at least a part of a first antenna for electromagnetic field emission and/or electromagnetic field reception, the first antenna coupled with one of the one or more wireless communication units; a second antenna coupled with one of the one or more wireless communication units, wherein the second antenna is between at least a part of the battery and the second end of the hearing aid housing; and an earpiece coupled to the hearing aid housing via a cable, wherein the earpiece comprises a receiver and is configured to be at least partially inserted into an ear canal of the user; wherein the second antenna has an elongated configuration extending in a direction that is parallel to an axis of the battery.

Description

BRIEF DESCRIPTION OF THE DRAWING

(1) The above and other features and advantages will become more apparent to those of ordinary skill in the art by describing in detail exemplary embodiments thereof with reference to the attached drawings in which:

(2) FIG. 1 shows a schematic view of a hearing aid according to an embodiment of the disclosure,

(3) FIG. 2 shows a BTE hearing aid with an ear hook according to the present disclosure,

(4) FIG. 3 shows a RIE hearing aid according to the present disclosure,

(5) FIGS. 4a and 4b show schematically components of a hearing aid according to the present disclosure,

(6) FIG. 5 shows a three dimensional illustration of a hearing aid according to the present disclosure, and

(7) FIG. 6 illustrates a shadow effect of the battery.

DETAILED DESCRIPTION

(8) The embodiments will now be described more fully hereinafter with reference to the accompanying drawings. The claimed invention may, however, be embodied in different forms and should not be construed as limited to the embodiments set forth herein.

(9) As used herein, the term “antenna” refers to an electrical or magnetic device which converts electric or magnetic power into radio waves. An electric antenna may comprise an electrically conductive material connected to e.g. a wireless communications unit, such as a radio chip, a receiver or a transmitter. A magnetic antenna, such as a magnetic loop antenna, may comprise a coil of electrically conductive material wound around a core of magnetic material.

(10) FIG. 1 shows a block-diagram of a hearing aid. In FIG. 1, the hearing aid 10 comprises a microphone 11 for receiving incoming sound and converting it into an audio signal, i.e. a first audio signal. The first audio signal is provided to a signal processor 12 for processing the first audio signal into a second audio signal compensating a hearing loss of a user of the hearing aid. A receiver 13 is connected to an output of the signal processor 12 for converting the second audio signal into an output sound signal, e.g. a signal modified to compensate for a users hearing impairment, and provides the output sound to a speaker 13. Thus, the hearing instrument signal processor 12 may comprise elements such as amplifiers, compressors and noise reduction systems etc. The hearing aid may further have a feedback loop for optimizing the output signal. The hearing aid has one or more wireless communication units 14, 16 (e.g. a transceiver) for wireless communication, each interconnected with an antenna 15, 17 for emission and reception of an electromagnetic field. The wireless communication units 14, 16 may connect to the hearing aid signal processor 12 and antennas 15, 17 for communicating with external devices, or with another hearing aid, located at another ear, in a binaural hearing aid system. The signal processor 12, the one or more wireless communication units 14, 16, and the antennas 15, 17 may be provided in a hearing aid housing 18. In some embodiments, the speaker 13 is provided in the first hearing aid part in the hearing aid housing 18, such as in behind-the-ear (BTE) hearing aids. In other embodiments, the speaker 13 is provided in a second hearing aid part 19, and for example provided in the ear of a user, such as in receiver-in-the-ear (RIE) hearing aids.

(11) In FIG. 2, a hearing aid 10 is shown, the hearing aid 10 being configured to be positioned behind the ear of a user during use. The hearing aid 10 is a behind-the-ear hearing aid. The hearing aid 10 comprises a hearing aid housing 18 and a coupling element 20. In FIG. 2, the speaker 13 (not shown in FIG. 2) is positioned in the hearing aid housing 18, and the coupling element 20 couples the sound to the ear of a user. The hearing aid further comprises a battery 22 for supplying power to the electronic components, including the one or more wireless communication units 14, 16, the signal processor 12, etc., of the hearing aid. It is seen that the battery 22 is provided closer to a second end 26 of the hearing aid housing 18 than to a first end 24 of the hearing aid housing 18. The hearing aid furthermore comprises a first antenna 15 and a second antenna 17.

(12) In FIG. 2, the first antenna 15 is provided within the hearing aid housing 18. It is however envisaged that the first antenna in some embodiments may extend into the coupling element 20. The first antenna 15 is an electric antenna, such as a monopole or dipole electric antenna. The first antenna 15 may be provided on a printed circuit board 28, and the printed circuit board 28 may be a flexible printed circuit board 28. Further electronic components may be provided on the printed circuit board 28.

(13) The second antenna 17 is provided or positioned between the battery and a second end, such as between a center axis 21 of the battery 22 and the second end 26 of the hearing aid. Typically, the second antenna 17 is a magnetic antenna for establishing an inductive connection, and the second antenna may be a loop antenna, such as a magnetic loop antenna, a coil antenna, etc.

(14) In some embodiments, the battery is a round flat type battery, such as a button cell type battery or coin cell type battery, and the center axis of the battery is an axis through a center of the battery from a first flat side of the battery to the other flat side of the battery. In some embodiments, a further battery axis 27 is defined as an axis through the center of the battery and a point on the circumference of the battery, the further battery axis being orthogonal, such as 90 degrees+/−15 degrees, such as 90 degrees+/−35 degrees, to a top side and/or a bottom side of the hearing aid housing 18 at the position of the center of the battery.

(15) The battery may be a round flat battery, such as a coin cell type battery type, and the battery may be provided with the flat sides along longitudinal axes of the hearing aid housing 18, such as along the longitudinal axes of the first hearing aid part 33.

(16) The second antenna 17 may be provided so that both the center axis 21 of the battery and the further battery axis 27 is on one side of the second antenna 17, and the second end 26 of the hearing aid housing 33, i.e. the first part of the hearing aid housing 33, is on another side of the second antenna 17. Thus, the second antenna 17 may be positioned between a center plane of the battery, the center plane being established by the center axis 21 of the battery and the further battery axis 27, and the second end 26 of the hearing aid housing 33.

(17) It has been found that hereby, a shadow effect of the battery reduces interference between the first antenna 15 and the second antenna 17.

(18) In FIG. 3, another hearing aid 30 is shown. In FIG. 3, like numerals represents the same elements as shown in FIG. 2. However, in FIG. 3, the hearing aid is a hearing aid having a first hearing aid part 33 being configured to be positioned behind the ear of a user, and a second hearing aid part 31 being configured to be positioned in the ear canal of a user. A coupling element 20 connects the first hearing aid part 33′ and the second hearing aid part 31. The hearing aid part 31 is shown as provided in housing or shell 31. In FIG. 3, a first part 15a of the first antenna 15 is provided in the first hearing aid part 33, and thus in the first hearing aid housing 33, while another part 15b of the first antenna 15 is provided in the coupling element 20. The first part 15a of the first antenna 15 is connected to a first wireless communication unit, such as a transceiver (not shown in FIG. 3) in the first hearing aid part 33.

(19) The second antenna 17 is typically connected to a second wireless communication unit, such as a transceiver, different from the first wireless communication unit.

(20) FIGS. 4a and 4b show schematically a hearing aid according to the present disclosure. FIG. 4a shows a side view of a hearing aid, such as of a first part 41 of a hearing aid 40. The first part of the hearing aid, i.e. the first hearing aid housing or part 41, has a longitudinal side 44 and a top side 49. The first hearing aid part 41 has a first end 24 and a second end 26. The hearing aid 40 has a battery 42, a first antenna 45 and a second antenna 47. It is seen that the battery is provided in the first hearing aid part 41 closer to the second end 26 of the first part 41 of the hearing aid, than to the first end 26 of the first hearing aid part 41. Thus, a first distance 2 from the second end 26 to the center axis 43 of the battery is smaller than a second distance 4 from the first end 24 to the center axis 43 of the battery.

(21) The first antenna 45 extends along a side, such as a longitudinal side 44, of the first hearing aid part, or hearing aid housing, 41. The second antenna 47 is a magnetic loop antenna which has a longitudinal axis 46 out of the plane of the paper. It is seen that the center axis 43 of the battery 42 is out of the plane of the paper and thus parallel, such as parallel +/−15 degrees, such as parallel +/−35 degrees, with the longitudinal axis 46 of the magnetic loop antenna 47.

(22) The further battery axis 48 is seen as being orthogonal to the top side 49 of the first hearing aid housing 41, such as having an angle of 90 degrees+/−15 degrees, such as 90 degrees+/−35 degrees, to a top side and/or a bottom side of the hearing aid housing 41 at the position of the center of the battery.

(23) In FIG. 4b, the hearing aid 40 is seen from an end view, from the second end 26 of the first hearing aid housing 41. The hearing aid housing 41 has an end side 43 of the housing or shell of the hearing aid housing 41. The battery 22 is seen to be positioned closer to the second end 26 than to the first end (not shown in FIG. 4b) and the second antenna 47 is positioned between the second end 26 and the battery 22. Typically, the second antenna 47 comprises a magnetic core 38, in the form of a rod of a magnetic material, and windings 39 of an electrical conductor wound around the magnetic core 38. The magnetic core has a longitudinal axis 5.

(24) The second antenna 47 may be provided so that the rod 38 of magnetic material is provided transversal in the first hearing aid housing 41, thus so that the second antenna has a longitudinal direction orthogonal to longitudinal sides 44 of the first hearing aid housing. The longitudinal axis 5 may thus form an angle with the longitudinal sides of the first hearing aid housing of 90 degrees, such as of 90 degrees+/−15 degrees, such as of 90 degrees+/−35 degrees. The second antenna 47 may primarily radiate through end surfaces 42. The magnetic core 38 and the windings 39 may be provided in a housing (not shown), such as a housing shielding longitudinal parts of the second antenna 47.

(25) FIG. 5 shows schematically a 3-dimensional hearing aid. The first antenna 15 is provided on a PCB 28 in the top of a first hearing aid housing 18. The first antenna is connected to a transceiver or radio 14. The battery 22 is provided closer to the second end 26 of the hearing aid housing 18 than to the first end of the hearing aid housing 24. It is seen that the second antenna 17 is provided behind the battery with respect to the first antenna 15, and thus between the battery 22 and the second end 26 of the hearing aid housing. Coupling element 20 connects the hearing aid housing 18 to the ear of the user (not shown), either by coupling sound through a coupling element in the form of an ear hook or a sound tube, or by coupling a signal to a receiver as positioned in the ear of a user via a coupling element 20 comprising an electrical signal path.

(26) FIG. 6 shows schematically a shadow effect of the battery as provided in the first hearing aid part, such as in the first hearing aid housing. In FIG. 6, the battery 22 is shown having a center axis 21 out of the plane of the paper and a further battery axis 48, as previously described. At one side of the battery, an antenna will be shielded by the battery from influence from an antenna at the other side of the battery. Thus, if the second antenna 17 is provided behind the battery 22, for example in the shadow region 61, the second antenna 17 is shielded from the first antenna 15 by the battery 22.

(27) The shadow region 61 behind the battery may be defined as the region behind the center axis 21 of the battery 22, and more specifically, the shadow region may be defined as being the region behind the plane defined by the center axis 21 and the further battery axis 48. The shadow region 61 may be still further specified. Thus, an axis 62, 62′ may be defined as an axis having an angle 63 to the further battery axis 48 towards the first antenna 15, the angle 63 being between 0 and 45 degrees. At the intersection between the axis 62, 62′ and the circumference of the battery, a tangent is provided, and the shadow region is defined by the plane defined by the center axis 21 and the further battery axis 48, and furthermore, by the plane of the tangents 64, 64′. A second antenna 17 provided in the shadow region 61 may thus be shielded with respect to the antenna 15 provided at the other side of the battery, opposite the shadow region 61.

(28) One or more feature(s) described herein may be implemented or incorporated into the following items:

(29) Item 1: A hearing aid having a hearing aid housing, the hearing aid housing having a first end and a second end and comprising: a microphone configured to receive an audio signal, a processing unit configured to process the audio signal for compensating a hearing loss of a user, a battery provided closer to a second end of the hearing aid housing than to a first end of the hearing aid housing, one or more wireless communication units for wireless communication, at least a part of a first antenna for emission and/or reception of an electromagnetic field being interconnected with one of the one or more wireless communication units, and a second antenna for emission and/or reception of an electromagnetic field being interconnected with one of the one or more wireless communication units, wherein the second antenna is provided between a center axis of the battery and the second end of the hearing aid.

(30) Item 2: A hearing aid according to item 1, comprising a first hearing aid part configured to be positioned in the hearing aid housing behind the ear of a user, a second hearing aid part being configured to be positioned in the ear of a user, and a coupling element coupling the first hearing aid part and the second hearing aid part.

(31) Item 3: A hearing aid according to item 2, wherein the first hearing aid part comprises the battery, and wherein the second hearing aid part comprises a speaker.

(32) Item 4: A hearing aid according to claim 2, wherein the coupling element comprises at least a part of the first antenna.

(33) Item 5: A hearing aid according to any of the preceding items, wherein the second antenna has a longitudinal extension in a second direction.

(34) Item 6: A hearing aid according to item 5, wherein the first antenna (electric) is provided in one or more planes, the one or more planes being orthogonal, such as 90 degrees+/−35 degrees, to the second direction.

(35) Item 7: A hearing aid according to any of the preceding items, wherein the first antenna is configured for radiation in a first frequency range, and the second antenna is configured for radiation in a second frequency range.

(36) Item 8: A hearing aid according to any of the preceding items, wherein the first antenna is an electric antenna and the second antenna is a magnetic antenna.

(37) Item 9: A hearing aid according to any of the preceding items, wherein the first antenna is configured to operate at a frequency above 800 MHz, such as at a frequency above 1 GHz, such as at a frequency of 2.4 GHz, during use.

(38) Item 10: A hearing aid according to any of the preceding items, wherein the second antenna is configured to operate at a frequency below 100 MHz, such as at below 10 MHz, during use.

(39) Item 11: A hearing aid according to any of the preceding items, wherein the second antenna is configured to operate at a frequency between 1 MHz and 100 MHz.

(40) Item 12: A hearing aid according to any of the preceding items, wherein the first antenna is configured for data communication at a first bit rate.

(41) Item 13: A hearing aid according to any of the preceding items, wherein the second antenna is configured for data communication at a second bit rate, the second bit rate being larger than the first bit rate, such as by a factor 10.

(42) Item 14: A binaural hearing aid system comprising a first and a second hearing aid to be provided at a first and a second ear of the user, respectively, wherein one or both of the hearing aids is a hearing aid according to any of items 1-13.

(43) Although particular embodiments have been shown and described, it will be understood that it is not intended to limit the claimed inventions to the preferred embodiments, and it will be obvious to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the claimed inventions. The specification and drawings are, accordingly, to be regarded in an illustrative rather than restrictive sense. The claimed inventions are intended to cover alternatives, modifications, and equivalents.