Abstract: A device comprising a first circuit, a second circuit, and a third circuit. The first circuit to receive, from an amplifier, a first signal having a first amount of power. The first circuit to also determine, based on the first amount of power, a range of power associated with transmission of the first signal by a transmitter. The second circuit to receive a second signal to define one or more characteristics of the second circuit. Receipt of the second signal, by the second circuit, can cause the second circuit to adjust the first signal from the first amount of power to a second amount of power. The third circuit to receive, from the second circuit, the first signal having the second amount of power, and the third circuit to provide a third signal having a voltage level to indicate a third amount of power transmitted by the transmitter.

Abstract: A power amplifier or power amplification technique can achieve improved radio frequency (RF) performance. The power amplifier includes circuitry including a configurable impedance matching circuit and a driver circuit. The driver circuit is fabricated using a first process different than a second process. The impedance matching circuit being fabricated using the second process. Circuits in the first process can be used to partially or in whole control the tuning of the matching circuit in the second process.

Abstract: A device to receive a first signal from a driver. The device comprising a first circuit, a second circuit, a third circuit, and a fourth circuit. The first circuit to provide a second signal having a first level. The second circuit to detect the first level of the first signal and to provide a third signal to control a third circuit of the device. The third circuit to provide a fourth signal, the fourth signal having a first level in response to a difference being smaller than a predetermined value, and the fourth signal having a second level in response to the difference being larger than the predetermined value. The fourth circuit to provide a fifth signal, the fifth signal having a first level based at least on the second signal, and the fifth signal having a second level based at least on the second signal and the fourth signal.

Abstract: Wide-band output isolation is provided. A device includes a first output for a first radio frequency (RF) signal. A device includes a second output for a second RF signal. The device includes a first transistor having a first source/drain. The device includes a second transistor having a first source/drain, wherein the first source/drain of the first transistor is coupled to the first source/drain of the second transistor and wherein the first and second transistors are disposed between the first output and the second output.

Abstract: A device comprising a first circuit, a second circuit, and a third circuit. The first circuit to receive, from an amplifier, a first signal having a first amount of power. The first circuit to also determine, based on the first amount of power, a range of power associated with transmission of the first signal by a transmitter. The second circuit to receive a second signal to define one or more characteristics of the second circuit. Receipt of the second signal, by the second circuit, can cause the second circuit to adjust the first signal from the first amount of power to a second amount of power. The third circuit to receive, from the second circuit, the first signal having the second amount of power, and the third circuit to provide a third signal having a voltage level to indicate a third amount of power transmitted by the transmitter.

Abstract: A power amplifier is provided. The power amplifier includes a first circuit comprising a first transistor and a second transistor coupled respectively to a third transistor and a fourth transistor. The power amplifier also includes a second circuit comprising a transformer having a first winding and a second winding. The first winding comprises a first terminal coupled to the third transistor and a second terminal coupled to the fourth transistor to receive a differential voltage signal with a gain from the first circuit. The second winding comprises a first terminal being grounded and a second terminal serving as an output terminal. The power amplifier circuit further includes a third circuit comprising a programmable capacitor from a midpoint of the first winding to a common node that is coupled to ground. The programmable capacitor is tunable to reduce second harmonic seen at the output terminal.

Abstract: An amplifier may include control circuitry that may track a first input signal parameter and, in response, adjust a value of a second input parameter. Input parameter tracking and adjustment may facilitate control of output parameters for the amplifier. For example, an envelope-tracking amplifier may track input signal amplitude and adjust other input parameters in response. The adjustments may facilitate control of output parameters, such as gain or efficiency. The amplifier may further include calibration circuitry to determine adjustment responses to various tracked input parameters.

Abstract: A fully integrated power amplifier (PA) employing a transformer combiner with enhanced back-off efficiency includes a first PA to amplify a first radio frequency (RF) signal and a second PA to amplify a second RF signal. A first variable capacitor is coupled between differential output nodes of the first PA. A second variable capacitor is coupled between differential output nodes of the second PA. The differential outputs of the first PA and the second PA are coupled via respective first and second transformers to a load. Capacitance values associated with the first and second variable capacitors are dynamically adjustable based on an amplitude of the RF signal to achieve a desired power efficiency at an output power level.

Abstract: A wireless communication device includes a first circuit including a baseband circuit and a radio circuit, and at least one frontend module (FEM) remote from the first circuit and placed in close proximity to and coupled to at least one radio-frequency (RF) antenna. The FEM is coupled to the first circuit via interface circuitry. An FEM comprises a frontend (FE) circuit including one or more low-noise amplifiers (LNAs), one or more power amplifiers (PAs), and at least one of a multi-pole switch and a multiplexer. The multi-pole switch and the multiplexer being implemented on a first side of the FEM coupled to the interface circuitry. The interface circuitry includes at least some of filters, splitters, multi-pole switches, and multiplexers to reduce a count of interconnect routes to the at least one FEM.

Abstract: An amplifier may include control circuitry that may track a first input signal parameter and, in response, adjust a value of a second input parameter. Input parameter tracking and adjustment may facilitate control of output parameters for the amplifier. For example, an envelope-tracking amplifier may track input signal amplitude and adjust other input parameters in response. The adjustments may facilitate control of output parameters, such as gain or efficiency. The amplifier may further include calibration circuitry to determine adjustment responses to various tracked input parameters.

Abstract: A fully integrated power amplifier (PA) employing a transformer combiner with enhanced back-off efficiency includes a first PA to amplify a first radio frequency (RF) signal and a second PA to amplify a second RF signal. A first variable capacitor is coupled between differential output nodes of the first PA. A second variable capacitor is coupled between differential output nodes of the second PA. The differential outputs of the first PA and the second PA are coupled via respective first and second transformers to a load. Capacitance values associated with the first and second variable capacitors are dynamically adjustable based on an amplitude of the RF signal to achieve a desired power efficiency at an output power level.

Abstract: An amplifier may include control circuitry that may track a first input signal parameter and, in response, adjust a value of a second input parameter. Input parameter tracking and adjustment may facilitate control of output parameters for the amplifier. For example, an envelope-tracking amplifier may track input signal amplitude and adjust other input parameters in response. The adjustments may facilitate control of output parameters, such as gain or efficiency. The amplifier may further include calibration circuitry to determine adjustment responses to various tracked input parameters.

Abstract: A transmit/receive switch architecture is provided which reuses a power amplifier's transformer as part of the low noise amplifier (LNA) input matching network. A front-end circuit includes a transmit/receive switch. The transmit/receive switch includes a transformer that includes primary winding and secondary winding. The transmit/receive also includes a transistor, where a drain of the transistor is connected to the secondary winding and a gate of the transistor is configured to receive a control signal. The transmit/receive switch operates as a receive switch when the control signal is low and inputs of the primary winding are either shorted or at open circuit. The transmit/receive switch operates as a transmit switch when the control signal is high.

Abstract: An amplifier may include control circuitry that may track a first input signal parameter and, in response, adjust a value of a second input parameter. Input parameter tracking and adjustment may facilitate control of output parameters for the amplifier. For example, an envelope-tracking amplifier may track input signal amplitude and adjust other input parameters in response. The adjustments may facilitate control of output parameters, such as gain or efficiency. The amplifier may further include calibration circuitry to determine adjustment responses to various tracked input parameters.

Abstract: A wireless communication device includes a first circuit including a baseband circuit and a radio circuit, and at least one frontend module (FEM) remote from the first circuit and placed in close proximity to and coupled to at least one radio-frequency (RF) antenna. The FEM is coupled to the first circuit via interface circuitry. An FEM comprises a frontend (FE) circuit including one or more low-noise amplifiers (LNAs), one or more power amplifiers (PAs), and at least one of a multi-pole switch and a multiplexer. The multi-pole switch and the multiplexer being implemented on a first side of the FEM coupled to the interface circuitry. The interface circuitry includes at least some of filters, splitters, multi-pole switches, and multiplexers to reduce a count of interconnect routes to the at least one FEM.

Abstract: A transmit/receive switch architecture is provided which reuses a power amplifier's transformer as part of the low noise amplifier (LNA) input matching network. A front-end circuit includes a transmit/receive switch. The transmit/receive switch includes a transformer that includes primary winding and secondary winding. The transmit/receive also includes a transistor, where a drain of the transistor is connected to the secondary winding and a gate of the transistor is configured to receive a control signal. The transmit/receive switch operates as a receive switch when the control signal is low and inputs of the primary winding are either shorted or at open circuit. The transmit/receive switch operates as a transmit switch when the control signal is high.

Abstract: A broadband digital transmitter is disclosed. The digital transmitter includes a vector decomposer circuit, a phase selector circuit, and a digital power amplifier (DPA). The vector decomposer circuit receives baseband in-phase (I) and quadrature (Q) signals and decomposes the baseband I and Q signals into an offset envelope signal and a non-offset envelope signal. The phase selector circuit receives a plurality of phase offset local oscillator (LO) signals and outputs, responsive to the baseband I and Q signals, offset LO signals and non-offset LO signals. The DPA processes the offset envelope signal, the non-offset envelope signal, the offset LO signals, and the non-offset LO signals to generate an output signal of the digital transmitter.

Abstract: A broadband digital transmitter is disclosed. The digital transmitter includes a vector decomposer circuit, a phase selector circuit, and a digital power amplifier (DPA). The vector decomposer circuit receives baseband in-phase (I) and quadrature (Q) signals and decomposes the baseband I and Q signals into an offset envelope signal and a non-offset envelope signal. The phase selector circuit receives a plurality of phase offset local oscillator (LO) signals and outputs, responsive to the baseband I and Q signals, offset LO signals and non-offset LO signals. The DPA processes the offset envelope signal, the non-offset envelope signal, the offset LO signals, and the non-offset LO signals to generate an output signal of the digital transmitter.

Abstract: The present disclosure is directed to an envelope tracking supply modulator for multiple PAs. The envelope tracking supply modulator is configured to provide, for each of the multiple PAs, a separate supply voltage that is modulated based on the envelope of the respective RF input signal to the PA. Each of the modulated supply voltages is constructed from a DC component and an alternating current (AC) component. The DC component for each modulated supply voltage is generated by a main switching regulator that is shared by the multiple PAs. In one embodiment, the AC component for each modulated supply voltage is generated by an auxiliary switching regulator that is shared by the multiple PAs and a separate linear regulator for each of the multiple PAs. In another embodiment, the AC component for each modulated supply voltage is generated by a separate buffer.

Abstract: A mixer for a transmitter includes a voltage converter to convert a baseband voltage to a baseband current. A mixer component mixes the baseband current with a local oscillator frequency. An output of the mixer component includes a radio frequency signal and a higher order radio frequency signal. A coupler sends the radio frequency signal and the higher order radio frequency signal to a differential output. A filter is integrated into the coupler to filter the higher order radio frequency signal before being output by the differential output.