Abstract: An antenna assembly includes a first antenna element coupled to RF circuitry via a first feeder, and a second antenna element coupled to the RF circuitry via a second feeder. The first feeder and the second feeder have different shapes. The first antenna element and the second antenna element radiate in different frequency bands and in a direction parallel to a ground plane. The ground plane is disposed on at least one layer in a substrate that includes a plurality of layers parallel to one another. The first antenna element is disposed on first one or more of the layers and the second antenna element is disposed on second one or more of the layers, which are different from the first one or more of the layers. Another antenna assembly includes a first subarray of the first antenna elements and a second subarray of the second antenna elements.

Abstract: The invention is directed to a communication device. The communication device includes a millimeter-wave antenna array and an appearance metal element. The appearance metal element has an antenna window. The millimeter-wave antenna array is configured to transmit or receive a wireless signal. The wireless signal is transferred through the antenna window of the appearance metal element.

Abstract: The invention is directed to a communication device. The communication device includes a millimeter-wave antenna array and an appearance metal element. The appearance metal element has an antenna window. The millimeter-wave antenna array is configured to transmit or receive a wireless signal. The wireless signal is transferred through the antenna window of the appearance metal element.

Abstract: A multi-band antenna array includes a plurality of first antennas for resonating at a first band, and a plurality of second antennas for resonating at a second band. A frequency of the second band is higher than a frequency of the first band. Locations of the plurality of first antennas project to a plurality of grid-one positions on a surface; locations of the plurality of second antennas project to a plurality of grid-two positions on the surface. Among the grid-one positions, a second grid-one position is nearest to a first grid-one position by a first distance along a first direction. Among the grid-two positions, a first grid-two position and a second grid-two position are closest two to the first grid-one position. The first and second grid-two positions are separated by a second distance along a second direction; and, the first direction and the second direction are nonparallel.

Abstract: An antenna assembly includes a first antenna element coupled to RF circuitry via a first feeder, and a second antenna element coupled to the RF circuitry via a second feeder. The first feeder and the second feeder have different shapes. The first antenna element and the second antenna element radiate in different frequency bands and in a direction parallel to a ground plane. The ground plane is disposed on at least one layer in a substrate that includes a plurality of layers parallel to one another. The first antenna element is disposed on first one or more of the layers and the second antenna element is disposed on second one or more of the layers, which are different from the first one or more of the layers. Another antenna assembly includes a first subarray of the first antenna elements and a second subarray of the second antenna elements.

Abstract: A tunable antenna module for a mobile device includes an antenna, a frequency-division circuit and one or more impedance-tuning circuits. The frequency-division circuit is coupled to a radiator of the antenna for forming one or more signal paths for one or more of component frequencies of a radio-frequency signal of the antenna. One or more the impedance-tuning circuits are coupled to the frequency-division circuit for tuning an impedance of the antenna at one or more of the component frequencies of the radio-frequency signal.

Abstract: An antenna with swappable and selective radiation direction includes a first arm, a second arm electrically connected to the first arm, a third arm is electrically connected to the first arm, a first impedance tuning circuit coupled to the second arm for connecting the second arm to a ground or a first matching component according to a control signal, and a second impedance tuning circuit coupled to the third arm for connecting the third arm to the ground or a second matching component according to the control signal. By tuning impedance of the antenna, the antenna operates in a first mode corresponding to a first radiation direction or a second mode corresponding to a second radiation direction.

Abstract: A multi-band antenna array includes a plurality of first antennas for resonating at a first band, and a plurality of second antennas for resonating at a second band. A frequency of the second band is higher than a frequency of the first band. Locations of the plurality of first antennas project to a plurality of grid-one positions on a surface; locations of the plurality of second antennas project to a plurality of grid-two positions on the surface. Among the grid-one positions, a second grid-one position is nearest to a first grid-one position by a first distance along a first direction. Among the grid-two positions, a first grid-two position and a second grid-two position are closest two to the first grid-one position. The first and second grid-two positions are separated by a second distance along a second direction; and, the first direction and the second direction are nonparallel.

Abstract: Examples of techniques for antenna ground and feed swapping in handheld applications are described. A condition with respect to wireless communication of a handheld apparatus having one or more antennas may be detected in determining whether to operate the handheld apparatus in a first mode or a second mode of wireless communication. In response to a determination to operate the handheld apparatus in the first mode, a first feeding port and one or more first shorting ports may be electrically connected to at least one antenna of the one or more antennas each disposed adjacent a first distal end of the handheld apparatus. Alternatively, in response to a determination to operate the handheld apparatus in the second mode, a second feeding port and one or more second shorting ports may be electrically connected to at least one antenna or another antenna of the one or more antennas.

Abstract: A tunable antenna module for a mobile device includes an antenna, a frequency-division circuit and one or more impedance-tuning circuits. The frequency-division circuit is coupled to a radiator of the antenna for forming one or more signal paths for one or more of component frequencies of a radio-frequency signal of the antenna. One or more the impedance-tuning circuits are coupled to the frequency-division circuit for tuning an impedance of the antenna at one or more of the component frequencies of the radio-frequency signal.

Abstract: An interface module for a communication device includes a first switch, for forming a first connection between a first feeding point of an antenna of the communication device and one of a first matching component and a first grounding component; a second switch, for forming a second connection between a second feeding point of the antenna and one of a second matching component and a second grounding component; and a third switch, for forming a third connection between a transceiver and one of the first matching component and the first grounding component.

Abstract: A tunable antenna module for a mobile device includes an antenna, a frequency-division circuit and one or more impedance-tuning circuits. The frequency-division circuit is coupled to a radiator of the antenna for forming one or more signal paths for one or more of component frequencies of a radio-frequency signal of the antenna. One or more the impedance-tuning circuits are coupled to the frequency-division circuit for tuning an impedance of the antenna at one or more of the component frequencies of the radio-frequency signal.

Abstract: An antenna with swappable and selective radiation direction includes a first arm, a second arm electrically connected to the first arm, a third arm is electrically connected to the first arm, a first impedance tuning circuit coupled to the second arm for connecting the second arm to a ground or a first matching component according to a control signal, and a second impedance tuning circuit coupled to the third arm for connecting the third arm to the ground or a second matching component according to the control signal. By tuning impedance of the antenna, the antenna operates in a first mode corresponding to a first radiation direction or a second mode corresponding to a second radiation direction.

Abstract: A tunable antenna module for a mobile device includes an antenna, a frequency-division circuit and one or more impedance-tuning circuits. The frequency-division circuit is coupled to a radiator of the antenna for forming one or more signal paths for one or more of component frequencies of a radio-frequency signal of the antenna. One or more the impedance-tuning circuits are coupled to the frequency-division circuit for tuning an impedance of the antenna at one or more of the component frequencies of the radio-frequency signal.

Abstract: A communication device includes an antenna, a frequency dividing circuit, and at least one variable impedance circuit. The frequency dividing circuit has a common port coupled to the antenna and at least one output port. The frequency dividing circuit is configured to divide a frequency range received from the common port into a plurality of frequency sub-ranges and output at least one of the frequency sub-ranges respectively at the output port. Each variable impedance circuit is coupled between a corresponding output port of the frequency dividing circuit and a first reference voltage. Each variable impedance circuit provides a respective variable impedance value switched between different respective impedance values.

Abstract: Examples of techniques for antenna ground and feed swapping in handheld applications are described. A condition with respect to wireless communication of a handheld apparatus having one or more antennas may be detected in determining whether to operate the handheld apparatus in a first mode or a second mode of wireless communication. In response to a determination to operate the handheld apparatus in the first mode, a first feeding port and one or more first shorting ports may be electrically connected to at least one antenna of the one or more antennas each disposed adjacent a first distal end of the handheld apparatus. Alternatively, in response to a determination to operate the handheld apparatus in the second mode, a second feeding port and one or more second shorting ports may be electrically connected to at least one antenna or another antenna of the one or more antennas.

Abstract: Examples of a tunable antenna and various implementations thereof are described. The tunable antenna may include a radiator and one or more varactors. The radiator may include at least one feeding port and at least one shorting port. Each of the one or more varactors may be coupled to the radiator and configured to operate in either an isolation state or a connection state when the tunable antenna operates in a radio-frequency (RF) frequency range.

Abstract: A tunable impedance matching circuit is provided for matching a signal source to an impedance of an antenna. The tunable impedance matching circuit includes two terminals, a series path, and two shunt paths. The first terminal is coupled to the signal source, and the second terminal is coupled to the antenna. The series path is coupled between the first terminal and the second terminal and includes a first tunable capacitor and at least one tunable inductor. One of the two shunt paths is coupled between the first terminal and a ground end, and the other one of the two shunt paths is coupled between the second terminal and the ground end. Each of the shunt paths includes a second tunable capacitor.

Abstract: The present invention provides a substrate-embedded antenna and an antenna array constituted by said antennas. An antenna of the present invention comprises a plurality of substrates, a metal fill and a feed line. Each of the substrates has at least one through-hole. The metal fill is placed within each through-hole, and each metal fill placed therein connects one another to form a columnar metal conductor which acts as a radiating body of the antenna. The feed line is electrically coupled to the metal conductor to input and output electrical signals. A plurality of said antennas may constitute an antenna array.

Abstract: A stacked antenna includes a first dielectric substrate, a second dielectric substrate, at least one vertical conductive structure, at least one transmission line structure, a driven element, at least one reflector and a director. The second dielectric substrate is stacked on the first dielectric substrate. The conductive structure penetrates the first dielectric substrate or the second dielectric substrate. The transmission line structure is disposed between the first and second dielectric substrates. The driven element is disposed between the first and second dielectric substrates and is electrically connected to the conductive structure through the transmission line structure. The reflector is spaced from the driven element by the first dielectric substrate and is disposed under the first dielectric substrate. The director is spaced from the driven element by the second dielectric substrate.