A mobile device includes a system circuit board, a metal frame, one or more other antenna elements, a display device, a first feeding element, and an RF (Radio Frequency) module. The system circuit board includes a system ground plane. The metal frame at least includes a first portion and a second portion. The metal frame at least has a first cut point positioned between the first portion and the second portion. The metal frame further has a second cut point for separating the other antenna elements from the first portion. The first cut point is arranged to be close to a middle region of the display device. The first feeding element is directly or indirectly electrically connected to the first portion. A first antenna structure is formed by the first feeding element and the first portion.

A mobile device includes a system circuit board, a metal frame, one or more other antenna elements, a display device, a first feeding element, and an RF (Radio Frequency) module. The system circuit board includes a system ground plane. The metal frame at least includes a first portion and a second portion. The metal frame at least has a first cut point positioned between the first portion and the second portion. The metal frame further has a second cut point for separating the other antenna elements from the first portion. The first cut point is arranged to be close to a middle region of the display device. The first feeding element is directly or indirectly electrically connected to the first portion. A first antenna structure is formed by the first feeding element and the first portion.

Examples are disclosed that relate to controlling an electronic device including a multi-mode antenna system. In a first operating mode, a radio signal is transmitted via a first antenna, a second antenna is actively de-tuned the while receiving a reflected radio signal thereby increasing isolation between the first and second antennas, an object is detected based at least on the reflected radio signal and the multi-mode antenna system is switched to operation in a second operating mode. In the second operating mode, a first remote radio signal transmitted by a remote antenna of a remote electronic device is received, via the first antenna, a second remote radio signal transmitted by the remote antenna is received via the second antenna, and a position of the remote electronic device is determined based at least on a phase difference between the first remote radio signal and the second remote radio signal.

Examples are disclosed that relate to controlling an electronic device including a multi-mode antenna system. In a first operating mode, a radio signal is transmitted via a first antenna, a second antenna is actively de-tuned the while receiving a reflected radio signal thereby increasing isolation between the first and second antennas, an object is detected based at least on the reflected radio signal and the multi-mode antenna system is switched to operation in a second operating mode. In the second operating mode, a first remote radio signal transmitted by a remote antenna of a remote electronic device is received, via the first antenna, a second remote radio signal transmitted by the remote antenna is received via the second antenna, and a position of the remote electronic device is determined based at least on a phase difference between the first remote radio signal and the second remote radio signal.

An electronic device may be provided with peripheral conductive housing structures, a first antenna, and a second antenna. A gap may divide the housing structures into a first segment forming an arm of the first antenna and a second segment forming an arm of the second antenna. A first feed terminal may be coupled to the first segment and a second feed terminal may be coupled to the second segment. Switchable components may be coupled in parallel between the first and second feed terminals across the gap. The switchable components may be adjusted to tune the frequency response of the first and/or second antenna. The switchable components may have a first state in which only the first feed terminal feeds the first antenna and may have a second state in which both the first and second feed terminals feed the first antenna.

The present invention provides a compact ceramic chip antenna array based on ultra-wide band three-dimensional direction finding, comprising a dielectric substrate, a metal floor and a coplanar waveguide feeder, wherein the front face of the dielectric substrate is provided with three antenna units; three coplanar waveguide feeders are electrically connected to three antenna units, respectively; a plurality of impedance matching structures are further arranged on a front side and a back side of the dielectric substrate, respectively; the first and second impedance matching structures are respectively arranged on a right side of the first antenna unit and a left side of the third antenna unit; the first and second impedance matching structures are rectangular grooves etched on the metal floor; the third, fourth, fifth and sixth impedance matching structures are respectively arranged at both ends of the second coplanar waveguide feeder; and the fifth and sixth impedance matching structures are rectangular metal patches. The compact ceramic chip antenna array based on ultra-wide band three-dimensional direction finding provided by the present invention not only improves the dimension of target positioning, but also effectively reduces the space occupied by the antenna, and is suitable for wireless handheld devices in indoor accurate positioning.

The present invention provides a compact ceramic chip antenna array based on ultra-wide band three-dimensional direction finding, comprising a dielectric substrate, a metal floor and a coplanar waveguide feeder, wherein the front face of the dielectric substrate is provided with three antenna units; three coplanar waveguide feeders are electrically connected to three antenna units, respectively; a plurality of impedance matching structures are further arranged on a front side and a back side of the dielectric substrate, respectively; the first and second impedance matching structures are respectively arranged on a right side of the first antenna unit and a left side of the third antenna unit; the first and second impedance matching structures are rectangular grooves etched on the metal floor; the third, fourth, fifth and sixth impedance matching structures are respectively arranged at both ends of the second coplanar waveguide feeder; and the fifth and sixth impedance matching structures are rectangular metal patches. The compact ceramic chip antenna array based on ultra-wide band three-dimensional direction finding provided by the present invention not only improves the dimension of target positioning, but also effectively reduces the space occupied by the antenna, and is suitable for wireless handheld devices in indoor accurate positioning.

Provided are an antenna assembly and an electronic device. The antenna assembly includes a first radiator, a second radiator, a first matching module, a first feeding module, a second matching module, and a second feeding module. The first radiator has a first ground end, a first coupling end, and a first feeding point. The second radiator has a second coupling end, a second ground end, and a second feed point. A first coupling gap is defined between the second coupling end and the first coupling end. The first matching module is electrically connected between the first feeding point and the first feeding module. The second matching module is electrically connected between the second feeding point and the second feeding module. The first radiator and the second radiator support multiple resonant modes, where at least one resonant mode is a to wavelength mode.

Provided are an antenna assembly and an electronic device. The antenna assembly includes a first radiator, a second radiator, a first matching module, a first feeding module, a second matching module, and a second feeding module. The first radiator has a first ground end, a first coupling end, and a first feeding point. The second radiator has a second coupling end, a second ground end, and a second feed point. A first coupling gap is defined between the second coupling end and the first coupling end. The first matching module is electrically connected between the first feeding point and the first feeding module. The second matching module is electrically connected between the second feeding point and the second feeding module. The first radiator and the second radiator support multiple resonant modes, where at least one resonant mode is a to wavelength mode.

An antenna device includes: a plurality of first antenna electrodes corresponding to a first frequency; and a plurality of second antenna electrodes corresponding to a second frequency lower than the first frequency, wherein each of the first antenna electrodes is disposed at a different one of lattice points at an interval of a half wavelength of the first frequency, and each of the second antenna electrodes is disposed at a different one of lattice points at an interval represented by the formula {(n.Math.d).sup.2+(m.Math.d).sup.2}.sup.1/2, where d is the half wavelength of the first frequency, and n and m are positive integers.