公开(公告)号：US10979096B2

公开(公告)日：2021-04-13

申请号：US16360058

申请日：2019-03-21

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Shoji Nagumo ,  Kanta Motoki ,  Yusaku Muroya

IPC: H04B1/525 ,  H04B1/00 ,  H03H9/72 ,  H04B1/18 ,  H03H7/38

Abstract: A high-frequency front-end circuit includes a diplexer, a duplexer, and a low-band-side multiple reflection prevention unit. The diplexer includes an antenna connection terminal, a low-band-side terminal, and a high-band-side terminal, and separates a low-band communication signal and a high-band communication signal. The duplexer separates a transmission signal and a reception signal of the low-band communication signal. The multiple reflection prevention unit is disposed between the low-band-side terminal and the duplexer and reduces or prevents multiple reflections of a leakage signal of the high-band communication signal which leaks to the low band side.