Variable gain amplifier and phased array transceiver
AssigneeHuawei Technologies Co., Ltd.
InventorsKeji Cui, Yongli Wang, Lei Lu
Life of this patent
Estimating the term…
Abstract
This application provides example variable gain amplifiers and example phased array transceivers. One example variable gain amplifier includes an amplification circuit, configured to amplify an input signal; a control circuit, configured to control a gain of the amplification circuit by adjusting an output current of the amplification circuit; an inductive load, where the inductive load is coupled to a signal output end of the amplification circuit; and an inductive adjustment circuit, where the inductive adjustment circuit and the inductive load are inductively coupled, and where the inductive adjustment circuit is adjustable.
Claims20
A variable gain amplifier, comprising:
- an amplification circuit, configured to amplify an input signal;
- a control circuit, configured to control a gain of the amplification circuit by adjusting an output current of the amplification circuit;
- an inductive load, wherein the inductive load is coupled to a signal output end of the amplification circuit;
- and
- an inductive adjustment circuit, wherein the inductive adjustment circuit and the inductive load are inductively coupled, and wherein an output signal of the variable gain amplifier is calibratable based on adjusting an inductance value of the inductive adjustment circuit.
A phased array transceiver comprising:
- a plurality of phased array channels, wherein each phased array channel comprises a low-noise amplifier;
- a phase shifter, configured to implement a fixed phase shift of an input signal;
- and
- a variable gain amplifier, wherein the plurality of phased array channels, the phase shifter, and the variable gain amplifier are connected in series, wherein the variable gain amplifier is configured to implement a variable gain of the input signal and keep the fixed phase shift of the input signal unchanged, and wherein the variable gain amplifier comprises:
- an amplification circuit, configured to amplify the input signal;
- a control circuit, configured to control a gain of the amplification circuit by adjusting an output current of the amplification circuit;
- an inductive load, wherein the inductive load is coupled to a signal output end of the amplification circuit;
- and
- an inductive adjustment circuit, wherein the inductive adjustment circuit and the inductive load are inductively coupled, and wherein an output signal of the variable gain amplifier is calibratable based on adjusting an inductance value of the inductive adjustment circuit.
Dependencies are inferred from the claim text.