A wireless charging transmit end includes a dual-polarized antenna which includes at least one dual-polarized element and a signal processing apparatus. Each dual-polarized element includes a first linearly polarized element and a second linearly polarized element that are mutually orthogonal and respectively receive a first wireless signal and a second wireless signal from the receive end. The signal processing apparatus obtains a first energy signal and a second energy signal based on a waveform relationship between the first wireless signal and the second wireless signal. The first energy signal is sent to the receive end by the first linearly polarized element, and the second energy signal is sent to the receive end by the second linearly polarized element. The first energy signal and the second energy signal are combined into an energy signal matching the receive end.

A wireless charging transmit end includes a dual-polarized antenna which includes at least one dual-polarized element and a signal processing apparatus. Each dual-polarized element includes a first linearly polarized element and a second linearly polarized element that are mutually orthogonal and respectively receive a first wireless signal and a second wireless signal from the receive end. The signal processing apparatus obtains a first energy signal and a second energy signal based on a waveform relationship between the first wireless signal and the second wireless signal. The first energy signal is sent to the receive end by the first linearly polarized element, and the second energy signal is sent to the receive end by the second linearly polarized element. The first energy signal and the second energy signal are combined into an energy signal matching the receive end.

A wireless communication chip includes an analog front-end circuit and a baseband circuit. The analog front-end circuit includes a first transceiver circuit and a second transceiver circuit, wherein the first transceiver circuit is arranged to transmit or receive signals through a first antenna, and the second transceiver circuit is arranged to transmit or receive signals through a second antenna. The baseband circuit is arranged to control the first transceiver circuit to use a first band or a second band for communication, and/or to control the second transceiver circuit to use the first band or the second band for communication. The baseband circuit controls the first transceiver circuit and the second transceiver circuit so that the analog front-end circuit alternately performs 2T2R in the first band and 2T2R in the second band.

A wireless communication chip includes an analog front-end circuit and a baseband circuit. The analog front-end circuit includes a first transceiver circuit and a second transceiver circuit, wherein the first transceiver circuit is arranged to transmit or receive signals through a first antenna, and the second transceiver circuit is arranged to transmit or receive signals through a second antenna. The baseband circuit is arranged to control the first transceiver circuit to use a first band or a second band for communication, and/or to control the second transceiver circuit to use the first band or the second band for communication. The baseband circuit controls the first transceiver circuit and the second transceiver circuit so that the analog front-end circuit alternately performs 2T2R in the first band and 2T2R in the second band.

A radar apparatus includes a transmitting analog front-end circuit, a plurality of antenna ports, a switching controller, a switching circuit, and a receiving analog front-end circuit. The transmitting analog front-end circuit generates a transmitting signal according to a carrier wave signal. A frequency of the carrier wave signal changes with time during a frequency sweep period of the carrier wave signal. The antenna ports are respectively configured to receive an echo signal corresponding to the transmitting signal. The switching controller is coupled to the transmitting analog front-end circuit and configured to generate a control signal according to the frequency sweep period of the carrier wave signal. The switching circuit is coupled to the antenna ports and the switching controller, configured to select one of the antenna ports to receive the echo signal according to the control signal, and coupled to the receiving analog front-end circuit.

A radar apparatus includes a transmitting analog front-end circuit, a plurality of antenna ports, a switching controller, a switching circuit, and a receiving analog front-end circuit. The transmitting analog front-end circuit generates a transmitting signal according to a carrier wave signal. A frequency of the carrier wave signal changes with time during a frequency sweep period of the carrier wave signal. The antenna ports are respectively configured to receive an echo signal corresponding to the transmitting signal. The switching controller is coupled to the transmitting analog front-end circuit and configured to generate a control signal according to the frequency sweep period of the carrier wave signal. The switching circuit is coupled to the antenna ports and the switching controller, configured to select one of the antenna ports to receive the echo signal according to the control signal, and coupled to the receiving analog front-end circuit.

Systems, methods, and apparatus for beam steering and switching are disclosed. In one or more examples, a method for operating a communication system comprises switching, at least one switch in a rearrangeable switch network, to control input levels to power amplifiers in a power distribution network. The method further comprises outputting, by the power amplifiers in the power distribution network, power to a plurality of antenna elements. Further, the method comprises steering and distributing power, by the antenna elements, in beams associated with each of the antenna elements according to a level of the power in each of the antenna elements.

Systems, methods, and apparatus for beam steering and switching are disclosed. In one or more examples, a method for operating a communication system comprises switching, at least one switch in a rearrangeable switch network, to control input levels to power amplifiers in a power distribution network. The method further comprises outputting, by the power amplifiers in the power distribution network, power to a plurality of antenna elements. Further, the method comprises steering and distributing power, by the antenna elements, in beams associated with each of the antenna elements according to a level of the power in each of the antenna elements.

A TX/RX RF switch that may include a reception path; and a transmission path that has an antenna port, a transmission input port, and transmission transistors. The transmission transistors have source-bulk connections. The reception path has an antenna port, a reception output port, and reception transistors. The reception path includes a first reception transistor that is closest to the antenna port, out of the reception transistors, and has a source-bulk connection, and at least one other reception transistor that has a bulk-to-ground connection. The reception transistors and the transmission transistors are CMOS transistors.

A TX/RX RF switch that may include a reception path; and a transmission path that has an antenna port, a transmission input port, and transmission transistors. The transmission transistors have source-bulk connections. The reception path has an antenna port, a reception output port, and reception transistors. The reception path includes a first reception transistor that is closest to the antenna port, out of the reception transistors, and has a source-bulk connection, and at least one other reception transistor that has a bulk-to-ground connection. The reception transistors and the transmission transistors are CMOS transistors.