A wireless signal processing circuit includes plural phase switchers, plural variable amplifiers and plural mixers. The plural phase switchers are provided on each of plural paths along which all in-phase signal and a quadrature signal are distributed. The plural phase switchers rotate the phases of the signals by signal phase rotation amounts according to a transmission direction of a transmission signal. The plural variable amplifiers alter amplitudes of input signals or output signals of the corresponding phase switchers in accordance with the transmission direction of the transmission signal. The plural mixers up-convert frequencies of the signals processed by the corresponding phase switchers and variable amplifiers.

A base station is disclosed that includes two separated antenna arrays. In a TDD mode of operation, both arrays are used for either transmit or receive. In a sub-band full-duplex mode of operation, one array is used to transmit downlink symbols while the remaining array is used to receive uplink symbols.

One example discloses a multi-radio device, including: a controller configured to be coupled to a first radio that is configured to transmit a first signal, and a second radio that is configured to transmit a second signal; wherein the controller includes a detection element configured to detect a third signal generated in response to simultaneous transmission of the first and second signals; wherein the controller includes a decision element configured to modulate one or more information packets in the first and second signals in response to the third signal.

A unit cell of a transmitter array includes a ground plane; first and second dielectric substrates, arranged on either side of the ground plane, and each having a first surface, oriented toward the ground plane, and a second, opposed, surface; first and second planar antennas, extending on the second surfaces of the first and second dielectric substrates, respectively; and a via, arranged to pass through the first and second dielectric substrates so as to electrically connect the first and second planar antennas; the via being electrically isolated from the ground plane. The unit cell further includes a third planar antenna, extending between the ground plane and the first surface of the first dielectric substrate, and electrically connected to the via.

A radio frequency module includes a mounting board, a power amplifier, a plurality of transmission filters, a first switch, an output matching circuit, a low-noise amplifier, and an external-connection terminal. The mounting board includes a first principal surface and a second principal surface on opposite sides of the mounting board. The first switch switches a connection between the power amplifier and the transmission filters. The output matching circuit is connected between the power amplifier and the first switch. The low-noise amplifier is disposed on the second principal surface of the mounting board. The external-connection terminal is disposed on the second principal surface of the mounting board. The power amplifier, the output matching circuit, the first switch, and the transmission filters are disposed on the mounting board in stated order in a direction that is orthogonal to a thickness direction of the mounting board.

An electronic device may have peripheral conductive housing structures, a display frame, a support plate, a logic board, and an antenna. The antenna may have a resonating element that includes a first slot between the logic board and a segment of the peripheral conductive housing structures, a second slot between the display frame and the segment, and optionally a third slot between the between the support plate and the segment. The slots may be at least partially overlapping, may have respective lengths, may be located at respective distances from a cover layer for the display, and may collectively receive radio-frequency signals in a frequency band such as the L5 GPS band. Switching circuitry and filter circuitry may be coupled to the antenna feed and/or to the antenna feed(s) of one or more adjacent antennas in the electronic device to help to isolate the antennas from each other.

According to various embodiments of the present invention, an electronic device may comprise: a housing comprising a first surface, a second surface oriented in the direction opposite from the first surface, and a side surface surrounding a space between the first surface and the second surface; a conductive member for forming at least a portion of the side surface; a display seen through the first surface and including a first conductive layer; a printed circuit board disposed to be spaced apart from the display between the display and the second surface in the housing, and including a second conductive layer in which at least a portion thereof faces the first conductive layer; a third conductive layer spaced apart from the display and the printed circuit board, disposed between the first conductive layer and the second conductive layer, and facing the first conductive layer; a support structure comprising a non-conductive plate which is formed between the third conductive layer and the printed circuit board and in which at least a portion thereof is in contact with the third conductive layer; a conductive pattern extending between the third conductive layer and the non-conductive plate and electrically connected to the second conductive layer; and a wireless communication circuit electrically connected to the conductive member and configured to transmit and/or receive an RF signal. Other various embodiments may be possible.

Apparatus and methods for antenna arrays for beamforming are disclosed. In certain embodiments, a mobile device includes a front-end system including a plurality of radio frequency signal conditioning circuits, an antenna array including a plurality of controllable antennas each connected to a corresponding one of the plurality of radio frequency signal conditioning circuits, and a control circuit. The plurality of controllable antennas include a first controllable antenna including a plurality of antenna elements interconnected by a plurality of variable resistors. Additionally, the control circuit is configured to control the plurality of variable resistors to control an antenna characteristic of the first controllable antenna.

Aspects relate to wireless communication including the provision of the ability of a user equipment (UE) to indicate the capability of the UE for demodulation reference signal (DMRS) bundling and/or joint channel estimation (JCE). In aspects, the capability indication includes using at least a physical random access channel (PRACH) to indicate the capability of a UE for repeated transmission of the physical uplink shared channel (PUSCH) carrying a connection message, and counting of available slots that are used for the repeated transmission of the physical channel. Additionally, the UE may be configured to indicate the capability for JCE through a demodulation reference signal (DMRS) configuration or a DMRS port.

In some implementations, a satellite gateway includes a set of modulators comprising (i) a first modulator to modulate signals for transmission using a first of multiple polarizations, and (ii) a second modulator to modulate signals for transmission using a second of the multiple polarizations. The satellite gateway includes a set of upconverters comprising at least one upconverter for each of the multiple polarizations, wherein each of the upconverters is configured to generate a radiofrequency output by concurrently upconverting multiple intermediate frequency inputs to different frequency ranges. The satellite gateway includes an intermediate frequency distribution network configured to distribute the multiple intermediate frequency output signals from each of the modulators to the inputs of the upconverters. The satellite gateway includes a set of radiofrequency switches that are operable to selectively provide the radiofrequency outputs of the upconverters to antenna feeds for the multiple polarizations.