公开(公告)号：US20230198479A1

公开(公告)日：2023-06-22

申请号：US17559341

申请日：2021-12-22

Applicant: Intel Corporation

Inventor： Muhammed Elgousi ,  Chuanzhao Yu ,  Hyun Yoon ,  Xi Li ,  LiChung Tony Chang

IPC: H03F3/21 ,  H03F3/00 ,  H03F1/26

CPC classification number: H03F3/21 ,  H03F3/005 ,  H03F1/26 ,  H03F2200/372

Abstract: A method for harmonic trapping in a matching network of a power amplifier includes determining primary inductance and secondary inductance of a differential transformer of the matching network, based on a signal operating frequency of the power amplifier. An inductance value for an L-C filter is determined based on the secondary inductance and a harmonic frequency of a local oscillator (LO) signal. A capacitance value for the L-C filter is determined based on the inductance value and the harmonic frequency of the LO signal. The L-C filter is provided on an electric connection between a direct current (DC) bias voltage source and a secondary inductor of the differential transformer. The L-C filter is configured with the determined inductance value and the determined capacitance value.