JP6673467B2 - 周波数可変フィルタ、rfフロントエンド回路、および、通信端末 - Google Patents
周波数可変フィルタ、rfフロントエンド回路、および、通信端末 Download PDFInfo
- Publication number
- JP6673467B2 JP6673467B2 JP2018509142A JP2018509142A JP6673467B2 JP 6673467 B2 JP6673467 B2 JP 6673467B2 JP 2018509142 A JP2018509142 A JP 2018509142A JP 2018509142 A JP2018509142 A JP 2018509142A JP 6673467 B2 JP6673467 B2 JP 6673467B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- frequency
- filter
- communication band
- state
- 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.)
- Active
Links
- 238000004891 communication Methods 0.000 title claims description 175
- 230000005540 biological transmission Effects 0.000 claims description 36
- 239000003990 capacitor Substances 0.000 claims description 27
- 230000003321 amplification Effects 0.000 claims description 13
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 13
- 238000013016 damping Methods 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/075—Ladder networks, e.g. electric wave filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/46—Networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
- H03H7/463—Duplexers
- H03H7/465—Duplexers having variable circuit topology, e.g. including switches
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
- H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
- H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
- H03F3/195—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only in integrated circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/12—Bandpass or bandstop filters with adjustable bandwidth and fixed centre frequency
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/24—Frequency- independent attenuators
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/38—Impedance-matching networks
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/46—Networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
- H03H7/461—Networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source particularly adapted for use in common antenna systems
-
- 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
-
- 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
- H03H9/6436—Coupled resonator filters having one acoustic track only
-
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details 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
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0475—Circuits with means for limiting noise, interference or distortion
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details 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
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/1018—Means associated with receiver for limiting or suppressing noise or interference noise filters connected between the power supply and the receiver
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/451—Indexing scheme relating to amplifiers the amplifier being a radio frequency amplifier
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H2210/00—Indexing scheme relating to details of tunable filters
- H03H2210/01—Tuned parameter of filter characteristics
- H03H2210/012—Centre frequency; Cut-off frequency
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H2210/00—Indexing scheme relating to details of tunable filters
- H03H2210/03—Type of tuning
- H03H2210/036—Stepwise
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details 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
- H04B1/38—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
- H04B1/40—Circuits
- H04B1/50—Circuits using different frequencies for the two directions of communication
- H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
- H04B1/525—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Transceivers (AREA)
- Filters And Equalizers (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Description
10P1,10P2:TXフィルタ
11,11A:ラダー型共振回路
12,15:インダクタ
13:第1減衰回路
14:第2減衰回路
16:縦結合型共振回路
20:受信側フィルタ回路
20P1,20P2:RXフィルタ
30,30A:分波回路
30P1,30P2:デュプレクサ
40:通信端末
41:BBIC
42:RFIC
43:送信側増幅回路
44:受信側増幅回路
45:アンテナ整合回路
46:アンテナ
50P:フロントエンド回路
51P1,51P2,51P3:スイッチ回路
112,114,115:並列腕共振器
113:並列腕キャパシタ
131,141:スイッチ回路
132:共振器
142:キャパシタ
1111,1112,1113,1114,1115:直列腕共振器
Pant:アンテナ端子
Prx:受信側端子
Ptx:送信側端子
Claims (12)
- アンテナ側端子と送信側端子との間に接続された直列腕回路と、前記アンテナ側端子と前記送信側端子とを結ぶ経路上のノードとグランドとの間に接続され、少なくとも1以上の並列腕共振子を含む並列腕回路と、を有するラダー型共振回路と、
前記ラダー型共振回路と前記送信側端子との間に接続されたノードと、グランドとの間に接続された第1減衰回路と、
前記並列腕回路における前記少なくとも1以上の並列腕共振子のうち少なくとも1つの第1並列腕共振子とグランドとに接続されており、前記第1並列腕共振子に直列接続された第2減衰回路と、を備え、
前記第1減衰回路は、
第2並列腕共振子と、
前記第2並列腕共振子と前記ノードとを導通した第1状態と、オープンである第2状態と、を切り替える第1スイッチと、を有し、
前記第2減衰回路は、
キャパシタと、
前記キャパシタと前記第1並列腕共振子とを導通した第1状態と、前記第1並列腕共振子とグランドとを導通した第2状態と、を切り替える第2スイッチと、を有し、
前記第1スイッチが第1状態の場合、前記第2スイッチが第1状態であり、
前記第1スイッチが第2状態の場合、前記第2スイッチが第2状態である、
周波数可変フィルタ。 - 前記少なくとも1以上の並列腕共振器は、2以上である、
請求項1に記載の周波数可変フィルタ。 - 前記第2並列腕共振子は、第1の減衰極を形成し、
前記第1並列腕共振子と前記キャパシタは、第2の減衰極を形成し、
前記第2の減衰極は、前記第1の減衰極の周波数よりも前記第1状態の通信帯域に近い、
請求項1または請求項2に記載の周波数可変フィルタ。 - 前記第1減衰回路と前記ラダー型共振回路との間に接続された、インダクタを更に備えた、
請求項1乃至請求項3のいずれかに記載の周波数可変フィルタ。 - 前記インダクタは、前記ラダー型共振回路に直列接続されている、
請求項4に記載の周波数可変フィルタ。 - 前記インダクタは、前記周波数可変フィルタの通過帯域が前記第1状態で適用する通信バンドおよび第2状態で適用する通信バンドにおける通信帯域を含むように前記ラダー型共振回路の共振周波数を伸長する、
請求項4または請求項5に記載の周波数可変フィルタ。 - 前記周波数可変フィルタの通過帯域がスプリアス規制NS17の周波数帯域とスプリアス規制NS18の周波数帯域との間まで伸長されている、
請求項4乃至請求項6のいずれかに記載の周波数可変フィルタ。 - 前記ラダー型共振回路は、縦結合共振子型フィルタが接続されており、
前記第1減衰回路は、前記縦結合共振子型フィルタと前記送信側端子との間の接続ノードに接続されている、
請求項1または請求項2に記載の周波数可変フィルタ。 - 請求項1乃至請求項7のいずれかに記載の周波数可変フィルタを、前記第1状態で適用する通信バンドと前記第2状態で適用する通信バンドの送信側フィルタとして備え、
該送信側フィルタに接続される送信側増幅回路をさらに備える、
RFフロントエンド回路。 - 前記第2状態で適用する通信バンドの受信信号および前記第1状態で適用する通信バンドの受信信号をフィルタ処理する受信側フィルタをさらに備え、
前記送信側フィルタと前記受信側フィルタとから分波回路が構成されている、
請求項9に記載のRFフロントエンド回路。 - 請求項10に記載のRFフロントエンド回路と、
前記受信側フィルタに接続される受信側増幅回路と、
前記送信側増幅回路と前記受信側増幅回路に接続されるRFICと、
を備える、通信端末。 - 前記RFICは、
外部からの通信バンド情報を用いて、前記第1減衰回路と前記第2減衰回路とに対して、前記第1スイッチと前記第2スイッチに対するスイッチ制御を行う、
請求項11に記載の通信端末。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2016070032 | 2016-03-31 | ||
JP2016070032 | 2016-03-31 | ||
PCT/JP2017/011573 WO2017170071A1 (ja) | 2016-03-31 | 2017-03-23 | 周波数可変フィルタ、rfフロントエンド回路、および、通信端末 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2017170071A1 JPWO2017170071A1 (ja) | 2018-12-20 |
JP6673467B2 true JP6673467B2 (ja) | 2020-03-25 |
Family
ID=59965429
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2018509142A Active JP6673467B2 (ja) | 2016-03-31 | 2017-03-23 | 周波数可変フィルタ、rfフロントエンド回路、および、通信端末 |
Country Status (5)
Country | Link |
---|---|
US (1) | US10382006B2 (ja) |
JP (1) | JP6673467B2 (ja) |
KR (1) | KR102086939B1 (ja) |
CN (1) | CN108886349B (ja) |
WO (1) | WO2017170071A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6822580B2 (ja) * | 2017-10-10 | 2021-01-27 | 株式会社村田製作所 | マルチプレクサおよび高周波フィルタ |
WO2021109111A1 (zh) * | 2019-12-06 | 2021-06-10 | 华为技术有限公司 | 通信装置、终端设备及通信方法 |
WO2021140809A1 (ja) * | 2020-01-10 | 2021-07-15 | 株式会社村田製作所 | 高周波モジュール及び通信装置 |
WO2022044580A1 (ja) * | 2020-08-28 | 2022-03-03 | 株式会社村田製作所 | 高周波回路および通信装置 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0334463A (ja) | 1989-06-30 | 1991-02-14 | Hitachi Ltd | 薄膜トランジスタ |
DE69834679T2 (de) * | 1997-03-12 | 2006-09-21 | Matsushita Electric Industrial Co., Ltd., Kadoma | Antennenweiche |
EP1035648A3 (en) * | 1999-03-10 | 2000-12-27 | Matsushita Electric Industrial Co., Ltd. | A band switching filter using a surface acoustic wave resonator and an antenna duplexer using the same |
JP2000323961A (ja) * | 1999-03-10 | 2000-11-24 | Matsushita Electric Ind Co Ltd | 弾性表面波共振器を用いた帯域切替フィルタとそれを用いたアンテナ共用器 |
JP2008301223A (ja) * | 2007-05-31 | 2008-12-11 | Panasonic Corp | 高周波フィルタ |
JP2009165066A (ja) * | 2008-01-10 | 2009-07-23 | Mitsubishi Electric Corp | 可変フィルタ |
FR2927742A1 (fr) * | 2008-02-15 | 2009-08-21 | St Microelectronics Sa | Filtre a resonateur acoustiques de type baw reconfigurable par voie numerique et procede |
JP5039162B2 (ja) * | 2010-03-05 | 2012-10-03 | 株式会社エヌ・ティ・ティ・ドコモ | 回路素子、可変共振器、可変フィルタ |
JP5816592B2 (ja) * | 2012-05-14 | 2015-11-18 | 株式会社村田製作所 | チューナブルフィルタ |
JP6033311B2 (ja) * | 2012-08-30 | 2016-11-30 | 株式会社村田製作所 | フィルタ装置及びデュプレクサ |
JP5605519B2 (ja) * | 2012-08-30 | 2014-10-15 | 株式会社村田製作所 | フィルタ装置 |
JP6323464B2 (ja) * | 2013-12-27 | 2018-05-16 | 株式会社村田製作所 | 高周波フィルタ |
JP6411292B2 (ja) * | 2015-06-26 | 2018-10-24 | 太陽誘電株式会社 | ラダー型フィルタ、デュプレクサおよびモジュール |
CN108028641B (zh) * | 2015-09-09 | 2021-04-20 | 株式会社村田制作所 | 频率可变滤波器、高频前端电路 |
KR101991219B1 (ko) * | 2016-05-19 | 2019-06-19 | 가부시키가이샤 무라타 세이사쿠쇼 | 필터 장치 |
-
2017
- 2017-03-23 JP JP2018509142A patent/JP6673467B2/ja active Active
- 2017-03-23 CN CN201780017528.1A patent/CN108886349B/zh active Active
- 2017-03-23 KR KR1020187026836A patent/KR102086939B1/ko active IP Right Grant
- 2017-03-23 WO PCT/JP2017/011573 patent/WO2017170071A1/ja active Application Filing
-
2018
- 2018-09-28 US US16/145,438 patent/US10382006B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
US20190036508A1 (en) | 2019-01-31 |
CN108886349A (zh) | 2018-11-23 |
CN108886349B (zh) | 2022-06-07 |
WO2017170071A1 (ja) | 2017-10-05 |
KR102086939B1 (ko) | 2020-03-09 |
JPWO2017170071A1 (ja) | 2018-12-20 |
KR20180112037A (ko) | 2018-10-11 |
US10382006B2 (en) | 2019-08-13 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US11336238B2 (en) | High-frequency module and communication apparatus | |
US10243538B2 (en) | High-frequency filter, multiplexer, high-frequency front-end circuit, and communication device | |
US10284163B2 (en) | Frequency-variable LC filter and high-frequency front end circuit | |
US10200012B2 (en) | High-frequency filter, front-end circuit, and communication apparatus | |
KR101980032B1 (ko) | 고주파 필터, 프론트엔드 회로 및 통신 기기 | |
JP6451745B2 (ja) | フィルタ回路、rfフロントエンド回路、および、通信装置 | |
JP6965581B2 (ja) | 高周波モジュール及び通信装置 | |
US10700659B2 (en) | Multiplexer, radio-frequency front end circuit, and communication terminal | |
US10128796B2 (en) | Power amplification module and front end circuit | |
US10476531B2 (en) | High-frequency front-end circuit | |
CN108288958B (zh) | 低通滤波器 | |
US10148297B2 (en) | Splitter | |
JP6673467B2 (ja) | 周波数可変フィルタ、rfフロントエンド回路、および、通信端末 | |
JP6629072B2 (ja) | 可変フィルタ回路および無線通信装置 | |
US10476535B2 (en) | High-frequency front end circuit and communication apparatus | |
US10886895B2 (en) | Ladder-type frequency-variable filter, multiplexer, radio-frequency front end circuit, and communication terminal | |
KR20190015128A (ko) | 복합형 필터 장치, 고주파 프론트 엔드 회로 및 통신 장치 | |
US10547337B2 (en) | Radio frequency front-end circuit and communication device | |
US20180269922A1 (en) | Front-end module | |
CN108141238B (zh) | 高频前端电路、无用波抑制方法 | |
KR101609637B1 (ko) | 필터 장치 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20180806 |
|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20180806 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20190910 |
|
A521 | Request for written amendment filed |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20191108 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20200204 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20200217 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 6673467 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |