MULTIPLEXER, HIGH FREQUENCY FRONT END CIRCUIT, AND COMMUNICATION DEVICE

MULTIPLEXER, HIGH FREQUENCY FRONT END CIRCUIT, AND COMMUNICATION DEVICE

A multiplexer (1) comprises: a transmission-side filter (11) connected to a common terminal (90) and a transmission input terminal (91); and a reception-side filter (12) connected to the common terminal (90) and a reception output terminal (92). The transmission-side filter (11) comprises a pluralit...

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1. Verfasser: KANAZAWA TOMIO
Format: Patent
Sprache:chi ; eng
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BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
RESONATORS
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description A multiplexer (1) comprises: a transmission-side filter (11) connected to a common terminal (90) and a transmission input terminal (91); and a reception-side filter (12) connected to the common terminal (90) and a reception output terminal (92). The transmission-side filter (11) comprises a plurality of series arm resonators (101-104); a plurality of parallel arm resonators (201, 202); and a parallel arm circuit (203). In an IDT electrode of the series arm resonator (101) which is connected closest to the common terminal (90), the electrode finger pitch in the arrangement-direction central part of a plurality of electrode fingers is the greatest among the electrode finger pitches of the IDT electrode, and the electrode finger pitch at the arrangement-direction ends is the smallest among the electrode finger pitches of the IDT electrode. 多工器(1)具备与共同端子(90)及发送输入端子(91)连接的发送侧滤波器(11)以及与共同端子(90)及接收输出端子(92)连接的接收侧滤波器(12)，发送侧滤波器(11)具备多个串联臂谐振器(101～104)、以及多个并联臂谐振器(201，202)及并联臂电路(203)，在最靠近共同端子(90)而连接的串联臂谐振器(101)所具有的IDT电极中
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The transmission-side filter (11) comprises a plurality of series arm resonators (101-104); a plurality of parallel arm resonators (201, 202); and a parallel arm circuit (203). In an IDT electrode of the series arm resonator (101) which is connected closest to the common terminal (90), the electrode finger pitch in the arrangement-direction central part of a plurality of electrode fingers is the greatest among the electrode finger pitches of the IDT electrode, and the electrode finger pitch at the arrangement-direction ends is the smallest among the electrode finger pitches of the IDT electrode. 多工器(1)具备与共同端子(90)及发送输入端子(91)连接的发送侧滤波器(11)以及与共同端子(90)及接收输出端子(92)连接的接收侧滤波器(12)，发送侧滤波器(11)具备多个串联臂谐振器(101～104)、以及多个并联臂谐振器(201，202)及并联臂电路(203)，在最靠近共同端子(90)而连接的串联臂谐振器(101)所具有的IDT电极中</description><language>chi ; eng</language><subject>BASIC ELECTRONIC CIRCUITRY ; ELECTRICITY ; IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS ; RESONATORS</subject><creationdate>2020</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20200724&amp;DB=EPODOC&amp;CC=CN&amp;NR=111448759A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&amp;date=20200724&amp;DB=EPODOC&amp;CC=CN&amp;NR=111448759A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KANAZAWA TOMIO</creatorcontrib><title>MULTIPLEXER, HIGH FREQUENCY FRONT END CIRCUIT, AND COMMUNICATION DEVICE</title><description>A multiplexer (1) comprises: a transmission-side filter (11) connected to a common terminal (90) and a transmission input terminal (91); and a reception-side filter (12) connected to the common terminal (90) and a reception output terminal (92). 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subjects BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS
RESONATORS
title MULTIPLEXER, HIGH FREQUENCY FRONT END CIRCUIT, AND COMMUNICATION DEVICE
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