JP6677296B2 - 弾性波フィルタ装置 - Google Patents
弾性波フィルタ装置 Download PDFInfo
- Publication number
- JP6677296B2 JP6677296B2 JP2018523558A JP2018523558A JP6677296B2 JP 6677296 B2 JP6677296 B2 JP 6677296B2 JP 2018523558 A JP2018523558 A JP 2018523558A JP 2018523558 A JP2018523558 A JP 2018523558A JP 6677296 B2 JP6677296 B2 JP 6677296B2
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- JP
- Japan
- Prior art keywords
- filter
- inductor
- terminal
- arm resonator
- parallel arm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000005540 biological transmission Effects 0.000 claims description 35
- 238000010586 diagram Methods 0.000 description 9
- 238000003780 insertion Methods 0.000 description 9
- 230000037431 insertion Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 239000004020 conductor Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000010897 surface acoustic wave method Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/25—Constructional features of resonators using surface acoustic waves
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/542—Filters comprising resonators of piezoelectric or electrostrictive material including passive elements
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/56—Monolithic crystal filters
- H03H9/566—Electric coupling means therefor
- H03H9/568—Electric coupling means therefor consisting of a ladder configuration
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/58—Multiple crystal filters
- H03H9/60—Electric coupling means therefor
- H03H9/605—Electric coupling means therefor consisting of a ladder configuration
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/64—Filters using surface acoustic waves
- H03H9/6423—Means for obtaining a particular transfer characteristic
- H03H9/6433—Coupled resonator filters
- H03H9/6483—Ladder SAW filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/70—Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
- H03H9/703—Networks using bulk acoustic wave devices
- H03H9/706—Duplexers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/70—Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
- H03H9/72—Networks using surface acoustic waves
- H03H9/725—Duplexers
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Description
20:送信側フィルタ
21:ラダー型回路
30:受信側フィルタ
40:整合回路
41:整合用インダクタ
50:共通接続点
200:回路基板
211、212、213、214:直列腕共振子
221、222、223、224:並列腕共振子
231、241:フィルタ用インダクタ
300:圧電デバイス
411:整合用インダクタ41の第1端子
412:整合用インダクタ41の第2端子
2311:フィルタ用インダクタ231の第1端子
2312:フィルタ用インダクタ231の第2端子
ANT:アンテナ
Pant:アンテナ端子
Prx:受信端子
Ptx:送信端子
Claims (2)
- アンテナに接続されるアンテナ端子と、
前記アンテナ端子に共通接続されている複数の帯域通過型フィルタと、
前記アンテナ端子と前記複数の帯域通過型フィルタの共通接続点との間に接続された整合回路と、を備え、
前記複数の帯域通過型フィルタのうち少なくとも1つの帯域通過型フィルタは、
弾性波共振子からなる少なくとも1つの直列腕共振子と、弾性波共振子からなる少なくとも1つの並列腕共振子とを有するラダー型回路と、
前記少なくとも1つの並列腕共振子とグランド電位との間に接続されたフィルタ用インダクタと、を備え、
前記整合回路は、整合用インダクタを備え、
前記整合用インダクタは、前記共通接続点と前記アンテナ端子とを接続する伝送ラインと、前記フィルタ用インダクタにおける前記並列腕共振子側の端子との間に接続されており、
前記少なくとも1つの並列腕共振子は複数であり、
前記フィルタ用インダクタは、第1フィルタ用インダクタと第2フィルタ用インダクタとを有し、
前記第1フィルタ用インダクタは、1つの並列腕共振子のみに接続されるインダクタであり、
前記整合用インダクタは、前記伝送ラインと前記第1フィルタ用インダクタとの間に接続されており、
前記第1フィルタ用インダクタが接続される並列腕共振子は、前記第2フィルタ用インダクタが接続される並列腕共振子よりも前記共通接続点に近い、
弾性波フィルタ装置。 - 前記少なくとも1つの帯域通過型フィルタは、送信側フィルタである、
請求項1に記載の弾性波フィルタ装置。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016125109 | 2016-06-24 | ||
JP2016125109 | 2016-06-24 | ||
PCT/JP2017/016472 WO2017221548A1 (ja) | 2016-06-24 | 2017-04-26 | 弾性波フィルタ装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2017221548A1 JPWO2017221548A1 (ja) | 2019-02-28 |
JP6677296B2 true JP6677296B2 (ja) | 2020-04-08 |
Family
ID=60784513
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2018523558A Active JP6677296B2 (ja) | 2016-06-24 | 2017-04-26 | 弾性波フィルタ装置 |
Country Status (4)
Country | Link |
---|---|
US (1) | US10812047B2 (ja) |
JP (1) | JP6677296B2 (ja) |
CN (1) | CN109314504B (ja) |
WO (1) | WO2017221548A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018212105A1 (ja) * | 2017-05-15 | 2018-11-22 | 株式会社村田製作所 | マルチプレクサ、送信装置および受信装置 |
JP6919664B2 (ja) * | 2019-01-31 | 2021-08-18 | 株式会社村田製作所 | マルチプレクサおよび通信装置 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030062969A1 (en) * | 2001-09-25 | 2003-04-03 | Tdk Corporation | Saw element and saw device |
JP2005124139A (ja) * | 2003-09-25 | 2005-05-12 | Murata Mfg Co Ltd | 分波器、通信機 |
WO2006040927A1 (ja) * | 2004-10-08 | 2006-04-20 | Murata Manufacturing Co., Ltd. | 分波器 |
US8902020B2 (en) * | 2009-07-27 | 2014-12-02 | Avago Technologies General Ip (Singapore) Pte. Ltd. | Resonator filter with multiple cross-couplings |
JP2014017537A (ja) * | 2010-11-09 | 2014-01-30 | Murata Mfg Co Ltd | 弾性波フィルタ装置 |
WO2012132093A1 (ja) * | 2011-03-31 | 2012-10-04 | 株式会社村田製作所 | 弾性波装置 |
JP2012244551A (ja) | 2011-05-23 | 2012-12-10 | Nippon Dempa Kogyo Co Ltd | デュプレクサの受信側フィルタ及びデュプレクサ |
CN104471857B (zh) | 2012-08-30 | 2017-02-15 | 株式会社村田制作所 | 滤波器装置 |
JP5817795B2 (ja) * | 2013-08-06 | 2015-11-18 | 株式会社村田製作所 | 高周波モジュール |
CN105531927B (zh) * | 2013-09-17 | 2018-03-30 | 株式会社村田制作所 | 双工器 |
JP2016012796A (ja) * | 2014-06-27 | 2016-01-21 | 太陽誘電株式会社 | フィルタ、デュプレクサおよびモジュール。 |
JP6372568B2 (ja) * | 2014-07-01 | 2018-08-15 | 株式会社村田製作所 | 高周波モジュール |
WO2016056377A1 (ja) * | 2014-10-10 | 2016-04-14 | 株式会社村田製作所 | 分波装置 |
CN107078715B (zh) * | 2014-10-16 | 2021-08-13 | 株式会社村田制作所 | 高频模块 |
-
2017
- 2017-04-26 CN CN201780038403.7A patent/CN109314504B/zh active Active
- 2017-04-26 JP JP2018523558A patent/JP6677296B2/ja active Active
- 2017-04-26 WO PCT/JP2017/016472 patent/WO2017221548A1/ja active Application Filing
-
2018
- 2018-12-19 US US16/224,948 patent/US10812047B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN109314504A (zh) | 2019-02-05 |
JPWO2017221548A1 (ja) | 2019-02-28 |
US20190123715A1 (en) | 2019-04-25 |
WO2017221548A1 (ja) | 2017-12-28 |
CN109314504B (zh) | 2022-07-29 |
US10812047B2 (en) | 2020-10-20 |
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