Huawei Technologies Co., Limited

Hailei Suo

Jie Sun

Yijun Sun

Zhixiong Zeng

Song Li

Jinhu Chen

A power amplifier circuit, a transmitter, and a network device are provided. The power amplifier circuit includes N input ports, N power amplifier branches, one combiner circuit, and one output port. Each of the N input ports is connected to one power amplifier branch, each of the power amplifier branches is connected to the combiner circuit, and the combiner circuit is further connected to the output port; the N power amplifier branches and the combiner circuit are configured to perform power amplification and combining on N input signals, to generate an output signal. The N power amplifier branches include one first power amplifier branch operates in a class AB or class B operating mode, and N−1 second power amplifier branches operate in a class C operating mode with different gate bias voltages, the gate bias voltages of the N−1 second power amplifier branches become lower in order.

Power amplifier circuit, transmitter, and network device

A power amplifier circuit includes: a first branch, including a first amplifier and a first matching network cascaded; a second branch, including a second amplifier and a second matching network cascaded, where a first coupled line enables the first branch and the second branch to form a first combiner; a third branch, including a third amplifier and a third matching network cascaded; and a fourth branch, including a fourth amplifier and a fourth matching network cascaded, where a second coupled line enables the third branch and the fourth branch to form a second combiner. A first output end of the first coupled line is a signal output end of the circuit, and a second output end of the first coupled line is connected to a first output end of the second coupled line, to enable the first combiner and the second combiner to form a series combiner.

Growing community of inventors

Chengdu, China

Hailei Suo