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1. (WO2017068852) HIGH-FREQUENCY FRONT-END CIRCUIT, AND METHOD FOR SUPPRESSING UNWANTED WAVE

Pub. No.:    WO/2017/068852    International Application No.:    PCT/JP2016/074575
Publication Date: Fri Apr 28 01:59:59 CEST 2017 International Filing Date: Thu Aug 25 01:59:59 CEST 2016
IPC: H04B 1/10
H03H 7/075
H03H 7/12
H04B 1/40
H04W 72/08
Applicants: MURATA MANUFACTURING CO., LTD.
株式会社村田製作所
Inventors: HORITA, Atsushi
堀田篤
Title: HIGH-FREQUENCY FRONT-END CIRCUIT, AND METHOD FOR SUPPRESSING UNWANTED WAVE
Abstract:
A high-frequency front-end circuit (10) is provided with a frequency-fixed filter (30) and a variable filter (40) for interference wave suppression. The frequency-fixed filter (30) attenuates a high-frequency signal outside of a specific frequency band. The variable filter (40) for interference wave suppression attenuates at least one high-frequency signal on an active communication channel being used by a system that is the cause of an interference wave generated in a nearby frequency domain including a wireless communication channel.