Disclosed is a midband dipole for use in a multiband antenna. The midband dipole has four folded dipoles, each of which is coupled to a decoupling circuit that has two capacitance points. The disclosed decoupling circuit configuration mitigates common mode resonance with nearby lowband dipoles, further preventing cross polarization in the midband.

To provide a sleeve antenna that can be attached to a chassis while maintaining favorable antenna gain even when using a small circuit board, and a wireless communication device. The sleeve antenna includes: a coaxial feed line 12; a radiating portion 14 that has a predetermined length and results from removing an outer conductor 30 at a tip portion of the coaxial feed line 12; and a sleeve 10 that has a predetermined length and covers the coaxial feed line 12 from a proximal end of the radiating portion 14 toward a direction opposite to the radiating portion 14. At least one of the radiating portion 14 and the sleeve 10 has a bent portion 36 in at least a portion thereof.

To provide a sleeve antenna that can be attached to a chassis while maintaining favorable antenna gain even when using a small circuit board, and a wireless communication device. The sleeve antenna includes: a coaxial feed line 12; a radiating portion 14 that has a predetermined length and results from removing an outer conductor 30 at a tip portion of the coaxial feed line 12; and a sleeve 10 that has a predetermined length and covers the coaxial feed line 12 from a proximal end of the radiating portion 14 toward a direction opposite to the radiating portion 14. At least one of the radiating portion 14 and the sleeve 10 has a bent portion 36 in at least a portion thereof.

An electronic device having a housing formed of a condutive material, and an antenna device thereof. The electronic device includes a housing provided with a plurality of housing modules, and a printed circuit board positioned inside the housing, and having an antenna power feeding unit electrically connected to the printed circuited board. The plurality of housing modules may be at least partially formed of a conductive material. At least one of the conductive materials of the plurality of housing modules may be electrically connected to the antenna power feeding unit of the printed circuit board so as to function as an antenna of the electronic device. Various embodiments may be made based on the technical idea of the present disclosure.

An electronic device having a housing formed of a condutive material, and an antenna device thereof. The electronic device includes a housing provided with a plurality of housing modules, and a printed circuit board positioned inside the housing, and having an antenna power feeding unit electrically connected to the printed circuited board. The plurality of housing modules may be at least partially formed of a conductive material. At least one of the conductive materials of the plurality of housing modules may be electrically connected to the antenna power feeding unit of the printed circuit board so as to function as an antenna of the electronic device. Various embodiments may be made based on the technical idea of the present disclosure.

A system comprising synchronization circuitry, a first interrogator, and a second interrogator. The first interrogator includes a transmit antenna; a first receive antenna, and circuitry configured to generate, using radio-frequency (RF) signal synthesis information received from the synchronization circuitry, a first RF signal for transmission by the transmit antenna, and generate, using the first RF signal and a second RF signal received from a target device by the first receive antenna, a first mixed RF signal indicative of a distance between the first interrogator and the target device. The second interrogator includes a second receive antenna, and circuitry configured to generate, using the RF signal synthesis information, a third RF signal; and generate, using the third RF signal and a fourth RF signal received from the target device by the second receive antenna, a second mixed RF signal indicative of a distance between the second interrogator and the target device.

A system comprising synchronization circuitry, a first interrogator, and a second interrogator. The first interrogator includes a transmit antenna; a first receive antenna, and circuitry configured to generate, using radio-frequency (RF) signal synthesis information received from the synchronization circuitry, a first RF signal for transmission by the transmit antenna, and generate, using the first RF signal and a second RF signal received from a target device by the first receive antenna, a first mixed RF signal indicative of a distance between the first interrogator and the target device. The second interrogator includes a second receive antenna, and circuitry configured to generate, using the RF signal synthesis information, a third RF signal; and generate, using the third RF signal and a fourth RF signal received from the target device by the second receive antenna, a second mixed RF signal indicative of a distance between the second interrogator and the target device.

The application discloses a wideband dual-polarized antenna, including a reflective plate and a radiating element mounted on the reflective plate. The radiating element includes four dipoles which are combined together to be arranged on the reflective plate; two arms of each dipole are respectively connected to top ends of two conductor, and bottom ends of the conductor are connected to a common base and are placed on the reflective plate; a focusing member with a conical structure is mounted above the radiating element, and includes conductive members and dielectric members. The conductive members are arranged on the dielectric members in an axisymmetrical manner, are supported by the dielectric members and are arranged above the dipoles. The beamwidth is adjusted by arranging the focusing member with the conical structure above the radiating element so that the wideband dual-polarized antenna has the beamwidth reaching the desired range, has lower cross polarization ratio.

A dipole antenna forms a distributed network filter.

A dipole antenna forms a distributed network filter.