A co-time, co-frequency full-duplex terminal includes a radio frequency transceiver, a power divider, a local transmitting antenna, a controllable adaptive module, and a signal mixer. The radio frequency transceiver transmits a radio frequency signal. The power divider divides the radio frequency signal into radio frequency signals in a first path and a second path. The local transmitting antenna transmits the radio frequency signal in the first path. The controllable adaptive module controls the radio frequency signal in the second path to have an amplitude equal to an amplitude of a self-interference signal and have a phase opposite to a phase of the self-interference signal. The signal mixer mixes the radio frequency signal, after being controlled by the controllable adaptive module, with a base station signal and the self-interference signal.

An electronic device may be provided with wireless circuitry. The wireless circuitry may include one or more antennas and first and second radio-frequency modules. The device may include a conductive housing having dielectric antenna windows. The first module may generate first millimeter wave signals in a first communications band. The antenna may transmit the first signals to external equipment through the dielectric window at a transmit power level. The antenna may receive control signals in the second communications band from the external equipment through the dielectric window. The first and second communications bands may include frequencies greater than 10 GHz. The second module may pass the received control signals to the first module to adjust the transmit power level of the first signals transmitted by the antenna. A duplexer may be interposed between the modules and the antenna for isolating the first and second communications bands.

Provided is an in-band full-duplex MIMO antenna, which includes: a substrate; and transmission antenna elements and reception antenna elements separately coaxially disposed on the same plane of the substrate, in which the transmission antenna elements have a first polarization characteristic, and the reception antenna elements have a second polarization characteristic different from the first polarization characteristic.

An intelligent backhaul radio is disclosed, which can operate by zero division duplexing for use in PTP or PMP topologies, providing for significant spectrum usage benefits among other benefits. Specific system architectures and structures to enable active cancellation of multiple transmit signals at multiple receivers within a MIMO radio are disclosed. Further disclosed aspects include the adaptive optimization of cancellation parameters or coefficients.

An intelligent backhaul radio is disclosed, which can operate by zero division duplexing for use in PTP or PMP topologies, providing for significant spectrum usage benefits among other benefits. Specific system architectures and structures to enable active cancellation of multiple transmit signals at multiple receivers within a MIMO radio are disclosed. Further disclosed aspects include the adaptive optimization of cancellation parameters or coefficients.

A transmitter/receiver (1) up-converts, using an LO signal as a local oscillation signal, an IF signal having a predetermined frequency band, thereby generating a transmission signal RF.sub.TX. Moreover, the transmitter/receiver (1) generates a (LO+IF).sup.2 signal and a (LO−IF).sup.2 signal based on the IF signal and the LO signal. Using the LO signal obtained by adding-up of the (LO+IF).sup.2 signal and the (LO−IF).sup.2 signal, a reception signal RF.sub.RX is down-converted. Thus, a local oscillation signal generation unit of a receiving unit is not necessary.

A transmitter/receiver (1) up-converts, using an LO signal as a local oscillation signal, an IF signal having a predetermined frequency band, thereby generating a transmission signal RF.sub.TX. Moreover, the transmitter/receiver (1) generates a (LO+IF).sup.2 signal and a (LO−IF).sup.2 signal based on the IF signal and the LO signal. Using the LO signal obtained by adding-up of the (LO+IF).sup.2 signal and the (LO−IF).sup.2 signal, a reception signal RF.sub.RX is down-converted. Thus, a local oscillation signal generation unit of a receiving unit is not necessary.

Certain aspects of the present disclosure provide techniques for frequency hopping for data channel repetition in full duplex. A method performed by a user equipment (UE) includes receiving information from, a network entity, scheduling transmission of a plurality of uplink data channel repetitions in one or more slots according to a frequency hopping scheme that configures frequency hops between transmissions of repetitions of the plurality of uplink data channel repetitions and transmitting the plurality of uplink data channel repetitions in the one or more slots, the one or more slots comprising at least a full duplex slot including an uplink subband and a downlink subband.

Embodiments disclosed herein relate to improving an available bandwidth for a transceiver of an electronic device and to reducing a footprint of an associated integrated circuit of the electronic device. To do so, an isolation circuit is disposed between a transmit circuit and a receive circuit. The isolation circuit has first and second signal paths. A first portion of the signal propagates along the first signal path and a second portion of the signal propagates along the second signal path. A non-reciprocal phase shifter is disposed on the first signal path to shift a phase of the first portion to match a phase of the second portion and improve isolation between the transmit circuit and the receive circuit. The phase-shifted first portion may be combined with the second portion to reduce or substantially eliminate an insertion loss caused by the isolation circuit.

Transceiver switch circuitry having an antenna port, a receiver port and two transmitter ports. The transceiver switch circuitry is configured to be operable in a reception mode to allow reception signals at the antenna port to be forwarded to the receiver port, and in a transmission mode to allow transmission signals, having a center frequency with a wavelength λ, at the first transmitter port and the second transmitter port to be forwarded to the antenna port for transmission. The transceiver switch circuitry includes a receive arrangement comprising having a receiver λ/4 impedance transformer and a receiver switch circuitry configured to ground the first λ/4 impedance transformer at the receiver port in the transmission mode; and a transmit arrangement comprising having three transmitter impedance transformers and a first and second transmitter switch circuitry configured to virtually ground a second side of the first λ/4 impedance transformer in the reception mode.