A transmitter, a receiver and a transceiver are provided. The transceiver includes a hybrid transceiving circuit and a common-mode voltage control circuit. The hybrid transceiving circuit includes a digital-to-analog converter (DAC) circuit, a line driver coupled to the DAC circuit, a filtering and/or amplifying circuit coupled to the line driver, and an analog-to-digital converter (ADC) circuit coupled to the filtering and/or amplifying circuit. The common-mode voltage control circuit is electrically connected to a node of the hybrid transceiving circuit and is configured to detect a common-mode voltage of the node and to adjust the common-mode voltage of the node.

Disclosed is a digital radio-frequency transmitter, which includes a digital logic mixer, a digital power amplifier and an antenna, wherein an output terminal of the digital logic mixer is connected with an input terminal of the digital power amplifier; an output terminal of the digital power amplifier is connected to the antenna; the digital logic mixer is configured to perform logic mixing on baseband data and a radio-frequency local oscillator clock signal which are input into the digital radio-frequency transmitter to generate radio-frequency data; the digital power amplifier is configured to convert the radio-frequency data into an analog power signal; and the antenna is configured to transmit the analog power signal out. According to the digital radio-frequency transmitter of the present application, the circuit layout area and the circuit operation consumption can be effectively reduced.

A power distribution circuit applied to a radio frequency front-end transceiving apparatus includes a common-stage amplifying circuit and a branch-stage amplifying circuit, in which the branch-stage amplifying circuit comprises at least two parallel channel amplifying circuits; the common-stage amplifying circuit is configured to perform a first signal processing on a radio frequency signal received by an antenna of the radio frequency front-end transceiving apparatus to obtain a first power signal and output the first power signal to each of channel amplifying circuits, in which the first signal processing at least includes a buffering processing, an isolation processing and a low-noise amplifying processing; each channel amplifying circuit is configured to perform a second signal processing on the first power signal to obtain a second power signal and output the second power signal to a radio transceiving device; the second signal processing at least includes a low-noise amplifying processing.

A wireless transceiver circuit with an impedance matching network within an integrated circuit is disclosed. In some embodiments, the impedance matching network utilizes an inductor, having two portions, disposed on two different metal layers of the integrated circuit. The first end of the first portion of the inductor is in communication with an antenna. The second end of the second portion is in communication with a low noise amplifier for receiving signals and a power amplifier for transmitting RF signals. The second end of the first portion is connected to the first end of the second portion using a via. In another embodiment, the two portions are disposed on the same metal layer, wherein one portion is disposed within the other with a gap separating the two portions. These configurations require less space than using two separate inductors and also have a low coupling coefficient.

An electronic device according to various embodiments of the present invention may comprise a transmission module including a first transmission module and a second transmission module, and a processor. The processor may feedback-receive a transmission power of the first transmission module, calculate a difference value between a target transmission power and the transmission power of the first transmission module, determine a state of the first transmission module on the basis of the difference value, and turn off a transmission operation of the first transmission module and activate a transmission operation of the second transmission module in accordance with the determination that the state of the first transmission module is abnormal. Various other embodiments are possible.

A task processor has a low power connectivity processor and a high performance applications processor. Software processes have a component operative on a connectivity processor and a component operative on an applications processor. The low power connectivity processor is coupled to a low power front end for wireless packets and the high performance applications processor is coupled to a high performance front end. A power controller is coupled to the low power front end and enables the applications processor and high performance front end when wireless packets which require greater processing capacity are received, and removes power from the applications processor and high performance front end at other times.

A radio-frequency module includes a module substrate having a first major surface and a second major surface, a receive filter, a low-noise amplifier, an antenna switch, a first matching circuit disposed on the input side of the receive filter, a second matching circuit disposed on the output side of the receive filter, and a control circuit. The receive filter and the first and second matching circuits are arranged at the first major surface. The low-noise amplifier, the antenna switch, and the control circuit are arranged at the second major surface. When the module substrate is viewed in plan view, the receive filter is positioned between the first and second matching circuits, the control circuit is positioned between the antenna switch and the low-noise amplifier, and respective footprints of the second matching circuit and the low-noise amplifier coincide with each other.

Methods and devices to support multiple frequency bands in radio frequency (RF) circuits are shown. The described methods and devices are based on adjusting the effective width of a transistor in such circuits by selectively disposing matching transistors in parallel with the transistor. The presented devices and methods can be used in RF circuits including low noise amplifiers (LNAs), RF receiver front-ends or any other RF circuits where input matching to wideband inputs is required.

A full-duplex transceiver apparatus includes a plurality of antennas, the plurality of antennas including a first antenna and a second antenna, a first transmit front-end for feeding the first antenna, a first receive front-end for receiving a remotely-generated signal via the second antenna, and a matching network between the plurality of antennas and the transmit and receive front-ends for feeding the first antenna from the first transmit front-end and for delivering the remotely-generated signal from the second antenna to the first receive front-end. The matching network is a lossless reciprocal network causes a cancellation of the self-interference at the second antenna. The lossless reciprocal network has a first antenna port connected to the first antenna, a second antenna port connected to the second antenna, a first front-end port connected to the first transmit front-end, and a second front-end port connected the first receive front-end.

Designs and techniques to enhance power-efficiency and incorporate new features in millimeter-wave MIMO transceivers are described. A new mechanism for built-in dual-band, per-element self-interference cancellation (SIC) is introduced to enable multi-antenna frequency-division duplex (FDD) and full-duplex (FD) operation. Additionally, several innovative circuit concepts are introduced, including low-loss wideband antenna interface design, dual-band power combining PA, dual-band RF-SIC design, and bi-directional MIMO signal.