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1. WO2020116460 - FRONT-END CIRCUIT AND COMMUNICATION DEVICE

Publication Number WO/2020/116460
Publication Date 11.06.2020
International Application No. PCT/JP2019/047264
International Filing Date 03.12.2019
IPC
H04B 1/50 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details 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
38Transceivers, 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
40Circuits
50using different frequencies for the two directions of communication
H03H 7/46 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
7Multiple-port networks comprising only passive electrical elements as network components
46Networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
H04B 1/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details 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
CPC
H03H 7/46
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
HIMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
7Multiple-port networks comprising only passive electrical elements as network components
46Networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
H04B 1/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
H04B 1/50
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
1Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
38Transceivers, 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
40Circuits
50using different frequencies for the two directions of communication
Applicants
  • 株式会社村田製作所 MURATA MANUFACTURING CO., LTD. [JP]/[JP]
Inventors
  • 安田 潤平 YASUDA, Junpei
Agents
  • 吉川 修一 YOSHIKAWA, Shuichi
  • 傍島 正朗 SOBAJIMA, Masaaki
Priority Data
2018-22720704.12.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) FRONT-END CIRCUIT AND COMMUNICATION DEVICE
(FR) CIRCUIT FRONTAL ET DISPOSITIF DE COMMUNICATION
(JA) フロントエンド回路および通信装置
Abstract
(EN)
A front-end circuit (1) is provided with: an antenna connection terminal (100), a selection terminal (40c) and a selection terminal (40d); a switch circuit (20) having a common terminal (20a) and selection terminals (20c, 20d); a receiving filter (32) for passing through a BandB high-frequency signal; a signal path (62) which joins the selection terminal (20c) and the selection terminal (40c) and on which the receiving filter (32) is arranged; a signal path (63) which joins the selection terminal (20d) and the selection terminal (40d) and which is a bypass path on which no filter is arranged; and a filter (10) which is connected between the antenna connection terminal (100) and the common terminal (20a) and which passes through a first frequency band group including BandB.
(FR)
La présente invention concerne un circuit frontal (1) comportant : un terminal de connexion d'antenne (100), un terminal de sélection (40c) et un terminal de sélection (40d); un circuit de commutation (20) ayant un terminal commun (20a) et des bornes de sélection (20c, 20d); un filtre de réception (32) pour passer à travers un signal haute fréquence de bande B; un trajet de signal (62) qui rejoint le terminal de sélection (20c) et le terminal de sélection (40c) et sur lequel est disposé le filtre de réception (32); un trajet de signal (63) qui rejoint le terminal de sélection (20d) et le terminal de sélection (40d) et qui est un trajet de dérivation sur lequel aucun filtre n'est agencé; et un filtre (10) qui est connecté entre le terminal de connexion d'antenne (100) et le terminal commun (20a) et qui passe à travers un premier groupe de bandes de fréquences comprenant la bande B.
(JA)
フロントエンド回路(1)は、アンテナ接続端子(100)、選択端子(40c)、および選択端子(40d)と、共通端子(20a)、選択端子(20cおよび20d)を有するスイッチ回路(20)と、BandBの高周波信号を通過させる受信フィルタ(32)と、選択端子(20c)と選択端子(40c)とを結ぶ経路であって受信フィルタ(32)が配置された信号経路(62)と、選択端子(20d)と選択端子(40d)とを結ぶ経路であって、フィルタが配置されないバイパス経路である信号経路(63)と、アンテナ接続端子(100)と共通端子(20a)との間に接続され、BandBを含む第1周波数帯域群を通過させるフィルタ(10)と、を備える。
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