JP2004032819A - 弾性表面波高周波フィルタ - Google Patents
弾性表面波高周波フィルタ Download PDFInfo
- Publication number
- JP2004032819A JP2004032819A JP2003359530A JP2003359530A JP2004032819A JP 2004032819 A JP2004032819 A JP 2004032819A JP 2003359530 A JP2003359530 A JP 2003359530A JP 2003359530 A JP2003359530 A JP 2003359530A JP 2004032819 A JP2004032819 A JP 2004032819A
- Authority
- JP
- Japan
- Prior art keywords
- surface acoustic
- acoustic wave
- frequency
- series
- resonator
- 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.)
- Granted
Links
Images
Landscapes
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Abstract
【解決手段】本発明の弾性表面波高周波フィルタは、信号線に入出力端子が直列に接続された第1の弾性表面波共振器52〜54と、上記の信号線に入出力端子の一方が接続され他方が接地された第2の弾性表面波共振器38〜40とから成り、上記第1の弾性表面波共振器52は、簾状電極弾性表面波変換器8,9を二つ直列に具備している。
【選択図】図1
Description
図1に弾性表面波高周波フィルタの模式的平面図を、図2にその等価回路図を示す。
(実施例2)
以下、本発明の他の実施例を図4及び図5に基づき説明する。
(実施例3)
本実施例の他の実施例を図6乃至図9に基づいて説明する。
2〜4,8〜13,58〜66 簾状電極弾性表面波変換器
14〜37,67〜81 ストリップ型梯子状反射器
38〜40,82〜84 信号線に並列接続された弾性表面波共振器
52〜54,85〜87 信号線に直列接続された弾性表面波共振器
Claims (2)
- 信号線に直列に接続された第1の弾性表面波共振器と、前記の信号線に並列に接続された第2の弾性表面波共振器とから成るフィルタ機能単位を複数備える弾性表面波高周波フィルタにおいて、
前記弾性表面波高周波フィルタの一方の端子に接続された前記フィルタ機能単位内では、前記端子側から見て、2つ以上直列接続された簾状弾性表面波変換器を具備する前記第1の弾性表面波共振器と、1つの簾状弾性表面波変換器を具備する前記第2の弾性表面波共振器とが順に接続されていることを特徴とする弾性表面波高周波フィルタ。 - 前記2つ以上直列接続された簾状弾性表面波変換器を具備する前記第1の弾性表面波共振器のインピーダンスの周波数特性は、前記1つの簾状弾性表面波変換器を具備する前記第2の弾性表面波共振器のインピーダンスの周波数特性と比較して、共振点と反共振点との周波数差を保ったまま急峻であることを特徴とする請求項1記載の弾性表面波高周波フィルタ。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003359530A JP3653522B2 (ja) | 2003-10-20 | 2003-10-20 | 弾性表面波高周波フィルタ |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003359530A JP3653522B2 (ja) | 2003-10-20 | 2003-10-20 | 弾性表面波高周波フィルタ |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22465593A Division JPH0786871A (ja) | 1993-09-06 | 1993-09-09 | 弾性表面波高周波フィルタ |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2004032819A true JP2004032819A (ja) | 2004-01-29 |
JP3653522B2 JP3653522B2 (ja) | 2005-05-25 |
Family
ID=31185660
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003359530A Expired - Lifetime JP3653522B2 (ja) | 2003-10-20 | 2003-10-20 | 弾性表面波高周波フィルタ |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3653522B2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019008751A1 (ja) * | 2017-07-07 | 2019-01-10 | 三菱電機株式会社 | 電力増幅器 |
-
2003
- 2003-10-20 JP JP2003359530A patent/JP3653522B2/ja not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2019008751A1 (ja) * | 2017-07-07 | 2019-01-10 | 三菱電機株式会社 | 電力増幅器 |
JPWO2019008751A1 (ja) * | 2017-07-07 | 2019-07-04 | 三菱電機株式会社 | 電力増幅器 |
Also Published As
Publication number | Publication date |
---|---|
JP3653522B2 (ja) | 2005-05-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN211046891U (zh) | 弹性波滤波器 | |
US10305447B2 (en) | Acoustic wave filter with enhanced rejection | |
KR100210120B1 (ko) | 탄성 표면파 필터 | |
JPS63132515A (ja) | 弾性表面波複合フイルタ | |
JPH0955640A (ja) | 弾性表面波フィルタ | |
KR102205186B1 (ko) | 탄성파 필터 | |
JP6760480B2 (ja) | エクストラクタ | |
JP7363952B2 (ja) | 弾性波フィルタ | |
JP3077052B2 (ja) | 弾性表面波共振子フィルタ装置 | |
JP4023730B2 (ja) | 弾性表面波装置および分波器 | |
US7772942B2 (en) | Elastic wave filter utilizing a sub-propagation mode response to increase out of band attenuation | |
US8222973B2 (en) | Elastic wave resonator, ladder filter and duplexer | |
WO2022158470A1 (ja) | 弾性波フィルタおよびマルチプレクサ | |
KR102656805B1 (ko) | 탄성파 필터 | |
JP4053038B2 (ja) | 弾性表面波装置 | |
JP2004032819A (ja) | 弾性表面波高周波フィルタ | |
JP2004032820A (ja) | 弾性表面波高周波フィルタ | |
JPH0786871A (ja) | 弾性表面波高周波フィルタ | |
JP2015119310A (ja) | 弾性表面波フィルタ | |
JP3117021B2 (ja) | 弾性表面波フィルタ | |
WO2021045031A1 (ja) | 弾性波フィルタ | |
JP2002111444A (ja) | 複合弾性表面波フィルタ | |
JP2006074838A (ja) | 弾性表面波高周波フィルタ | |
JP2006101551A (ja) | 弾性表面波高周波フィルタ | |
JP2006295990A (ja) | 弾性表面波高周波フィルタ |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20031105 |
|
A871 | Explanation of circumstances concerning accelerated examination |
Free format text: JAPANESE INTERMEDIATE CODE: A871 Effective date: 20040331 |
|
A975 | Report on accelerated examination |
Free format text: JAPANESE INTERMEDIATE CODE: A971005 Effective date: 20040528 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20040608 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20040805 |
|
A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20041005 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A821 Effective date: 20041105 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20041206 |
|
A911 | Transfer of reconsideration by examiner before appeal (zenchi) |
Free format text: JAPANESE INTERMEDIATE CODE: A911 Effective date: 20050201 |
|
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: 20050222 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20050228 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090304 Year of fee payment: 4 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100304 Year of fee payment: 5 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110304 Year of fee payment: 6 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110304 Year of fee payment: 6 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130304 Year of fee payment: 8 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130304 Year of fee payment: 8 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313113 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130304 Year of fee payment: 8 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130304 Year of fee payment: 8 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140304 Year of fee payment: 9 |