公开(公告)号：US20230246606A1

公开(公告)日：2023-08-03

申请号：US18132422

申请日：2023-04-10

Applicant: LANSUS TECHNOLOGIES INC.

Inventor： ZHIYUAN XIE ,  YUTING ZHAO ,  JIASHUAI GUO

IPC: H03F3/21 ,  H03F1/56

CPC classification number: H03F3/21 ,  H03F1/565 ,  H03F2200/387 ,  H03F2200/255

Abstract: A differential power amplifier includes an input matching network, a first-stage amplification circuit, a first inter-stage matching network, a second-stage amplification circuit, a second inter-stage matching network, a third-stage amplification circuit, and an output matching network. The first-stage amplification circuit and the second-stage amplification circuit are single-ended input single-ended output circuits. The third-stage amplification circuit is a dual input dual output circuit. The second inter-stage matching network includes a first transformer T1, a first capacitor C1, a second capacitor C2, a first inductor L1, and a second inductor L2. The output matching network includes a second transformer T2. The inter-stage matching networks and the output matching network are realized by the first transformer T1 and the second transformer T2, which reduces an inter-stage matching difficulty, optimizes input return loss and gain, and improves output power.