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Title:
HIGH-FREQUENCY MODULE, TRANSMISSION AND RECEPTION MODULE, AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/123913
Kind Code:
A1
Abstract:
A high-frequency module (20) is provided with: a receiving side filter (21) having a first frequency band as a passband and a second frequency band as an attenuation band; an LNA (23); and a matching circuit (22) disposed between the receiving side filter (21) and the LNA (23). The matching circuit (22) causes an interval between an impedance in the second frequency band of the receiving side filter (21) and a second gain circle center point indicating the impedance at which the gain of the LNA (23) in the second frequency band is a maximum, in a Smith chart, to be greater than an interval between an impedance in the first frequency band of the receiving side filter (21) and a first gain circle center point indicating the impedance at which the gain of the LNA (23) in the first frequency band is a maximum.

Inventors:
MUTO, Hideki (10-1, Higashikotari 1-chome, Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
Application Number:
JP2017/046267
Publication Date:
July 05, 2018
Filing Date:
December 22, 2017
Export Citation:
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Assignee:
MURATA MANUFACTURING CO., LTD. (10-1, Higashikotari 1-chome Nagaokakyo-sh, Kyoto 55, 〒6178555, JP)
International Classes:
H03H7/38; H04B1/525
Domestic Patent References:
WO2015125638A12015-08-27
WO2016133028A12016-08-25
Foreign References:
JP2014207517A2014-10-30
JP2006333390A2006-12-07
JP2018026795A2018-02-15
Attorney, Agent or Firm:
YOSHIKAWA, Shuichi et al. (6F Tanaka Ito Pia Shin-Osaka Bldg., 3-10, Nishi Nakajima 5-chome, Yodogawa-ku, Osaka-cit, Osaka 11, 〒5320011, JP)
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