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1. WO2020008759 - HIGH-FREQUENCY FILTER, MULTIPLEXER, HIGH-FREQUENCY FRONT-END CIRCUIT, AND COMMUNICATION DEVICE

Publication Number WO/2020/008759
Publication Date 09.01.2020
International Application No. PCT/JP2019/021222
International Filing Date 29.05.2019
IPC
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
H
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9
Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
46
Filters
64
using surface acoustic waves
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
H
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
7
Multiple-port networks comprising only passive electrical elements as network components
01
Frequency selective two-port networks
06
including resistors
07
Bridged T-filters
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
H
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
9
Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
70
Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common or source
72
Networks using surface acoustic waves
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
1
Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
B
TRANSMISSION
1
Details of transmission systems, not covered by a single one of groups H04B3/-H04B13/123; Details of transmission systems not characterised by the medium used for transmission
38
Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
40
Circuits
H03H 9/64 (2006.01)
H03H 7/07 (2006.01)
H03H 9/72 (2006.01)
H04B 1/00 (2006.01)
H04B 1/40 (2015.01)
CPC
H03H 7/07
H03H 9/64
H03H 9/72
H04B 1/00
H04B 1/40
Applicants
  • 株式会社村田製作所 MURATA MANUFACTURING CO., LTD. [JP/JP]; 京都府長岡京市東神足1丁目10番1号 10-1, Higashikotari 1-chome, Nagaokakyo-shi, Kyoto 6178555, JP
Inventors
  • 森 弘嗣 MORI, Hirotsugu; JP
Agents
  • 吉川 修一 YOSHIKAWA, Shuichi; JP
  • 傍島 正朗 SOBAJIMA, Masaaki; JP
Priority Data
2018-12647803.07.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) HIGH-FREQUENCY FILTER, MULTIPLEXER, HIGH-FREQUENCY FRONT-END CIRCUIT, AND COMMUNICATION DEVICE
(FR) FILTRE HAUTE FRÉQUENCE, MULTIPLEXEUR, CIRCUIT FRONTAL HAUTE FRÉQUENCE ET DISPOSITIF DE COMMUNICATION
(JA) 高周波フィルタ、マルチプレクサ、高周波フロントエンド回路および通信装置
Abstract
(EN)
A filter (10) is provided with: two capacitors (C1a, C1b) that are connected in series on a path connecting an input terminal (101a) and an output terminal (102a); an inductor (L2) that is connected in parallel with the series circuit of the two capacitors (C1a, C1b); and a parallel arm resonator (P1) that is connected between ground and a node (N) on said path between the two capacitors (C1a, C1b).
(FR)
L'invention concerne un filtre (10) pourvu : de deux condensateurs (C1a, C1b) connectés en série sur un trajet connectant une borne d'entrée (101a) et une borne de sortie (102a); d'une bobine d'induction (L2) connectée en parallèle au circuit série des deux condensateurs (C1a, C1b); et d'un résonateur à bras en parallèle (P1) connecté entre une masse et un nœud (N) sur ledit trajet entre les deux condensateurs (C1a, C1b).
(JA)
フィルタ(10)は、入力端子(101a)と出力端子(102a)とを結ぶ経路上において直列接続された2つのキャパシタ(C1aおよびC1b)と、2つのキャパシタ(C1aおよびC1b)の直列回路に対して並列接続されたインダクタ(L2)と、2つのキャパシタ(C1aおよびC1b)の間における上記経路上のノード(N)とグランドとの間に接続された並列腕共振子(P1)と、を備える。
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