Invention Grant
- Patent Title: High frequency module
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Application No.: US15794073Application Date: 2017-10-26
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Publication No.: US10439588B2Publication Date: 2019-10-08
- Inventor: Masanori Kato , Shinya Mizoguchi , Yukiteru Sugaya
- Applicant: Murata Manufacturing Co., Ltd.
- Applicant Address: JP Kyoto
- Assignee: MURATA MANUFACTURING CO., LTD.
- Current Assignee: MURATA MANUFACTURING CO., LTD.
- Current Assignee Address: JP Kyoto
- Agency: Keating & Bennett, LLP
- Priority: JP2015-095948 20150508
- Main IPC: H03H9/145
- IPC: H03H9/145 ; H03H9/64 ; H03H9/25 ; H03H9/72 ; H03H9/05 ; H03H7/09

Abstract:
A transmission filter in a high frequency module includes serial arm resonators electrically connected in series to a serial arm electrically connecting a shared terminal and a transmission terminal, parallel arm resonators each electrically connected in series to each of parallel arms electrically connecting the serial arm and a ground, a first inductor electrically connected between the ground and a connection end electrically connecting at least the two parallel arm resonators of the parallel arm resonators, and a second inductor electrically connected between the ground and one parallel arm resonator different from the at least two parallel arm resonators of the parallel arm resonators. The second inductor is electromagnetic field coupled to at least one of an antenna side matching element, a transmission side matching element, and a portion of the serial arm in the transmission filter. The first and second inductors obstruct electromagnetic field coupling therebetween.
Public/Granted literature
- US20180062615A1 HIGH FREQUENCY MODULE Public/Granted day:2018-03-01
Information query
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