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JPH0191328U - - Google Patents

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Publication number
JPH0191328U
JPH0191328U JP8709488U JP8709488U JPH0191328U JP H0191328 U JPH0191328 U JP H0191328U JP 8709488 U JP8709488 U JP 8709488U JP 8709488 U JP8709488 U JP 8709488U JP H0191328 U JPH0191328 U JP H0191328U
Authority
JP
Japan
Prior art keywords
resonant
resonant elements
elements
ceramic filter
ladder
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
Application number
JP8709488U
Other languages
Japanese (ja)
Other versions
JPH0522986Y2 (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP1988087094U priority Critical patent/JPH0522986Y2/ja
Publication of JPH0191328U publication Critical patent/JPH0191328U/ja
Application granted granted Critical
Publication of JPH0522986Y2 publication Critical patent/JPH0522986Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はラダー型セラミツクフイルタの構成例
を示す回路図、第２図は本考案を第１図の回路に
適用した場合の一実施例における特性図、第３図
は従来のラダー型セラミツクフイルタの特性図、
第４図及び第５図はそれぞれラダー型セラミツク
フイルタの別な構成例を示す回路図である。 ＩＮ……入力端子、ＯＵＴ……出力端子、Ｓ１
，Ｓ２，Ｓ３，Ｓ４……直列共振素子、Ｐ１，Ｐ
２，Ｐ３，Ｐ４…並列共振素子、Ｐ……ポール、
Ｒ……リツプル、Ｗ……ポール幅。 Fig. 1 is a circuit diagram showing a configuration example of a ladder type ceramic filter, Fig. 2 is a characteristic diagram of an example when the present invention is applied to the circuit of Fig. 1, and Fig. 3 is a diagram of a conventional ladder type ceramic filter. Characteristic diagram of
FIGS. 4 and 5 are circuit diagrams showing other configuration examples of the ladder type ceramic filter, respectively. IN...Input terminal, OUT...Output terminal, S1
 , S 2 , S 3 , S 4 ...Series resonant element, P 1 , P
2 , P3 , P4 ...parallel resonant element, P...pole,
R...Ripple, W...Pole width.

Claims (1)

【実用新案登録請求の範囲】 (1) 入出力端子間に直列および並列に配置され
た複数の直列共振素子および並列共振素子とから
形成されるラダー型セラミツクフイルタにおいて
、共振周波数と反共振周波数の差ΔＦが最小の共
振素子を中央に配置し、入出力端子に近づくにつ
れてより大きなΔＦの共振素子が位置するように
各共振素子を配置したことを特徴とするラダー型
セラミツクフイルタ。 (2) 直列共振素子と並列共振素子の総和が奇数
個で、中央に配置されたΔＦが最小の共振素子が
、１個の共振素子である請求項１のラダー型セラ
ミツクフイルタ。 (3) 直列共振素子と並列共振素子の総和が偶数
個で、中央に配置されたΔＦが最小の共振素子が
、２個の共振素子である請求項１のラダー型セラ
ミツクフイルタ。 (4) 直列共振素子と並列共振素子がそれぞれ４
個以上の偶数個あり、中央に配置されたΔＦが最
小の共振素子が、４個の共振素子である請求項１
のラダー型セラミツクフイルタ。[Claims for Utility Model Registration] (1) In a ladder-type ceramic filter formed from a plurality of series resonant elements and parallel resonant elements arranged in series and parallel between input and output terminals, the resonant frequency and the anti-resonant frequency A ladder type ceramic filter characterized in that the resonant elements are arranged such that the resonant element with the smallest difference ΔF is located at the center, and the resonant elements with larger ΔF are located closer to the input/output terminal. (2) The ladder-type ceramic filter according to claim 1, wherein the sum of the series resonant elements and the parallel resonant elements is an odd number, and the resonant element with the minimum ΔF located at the center is one resonant element. (3) The ladder-type ceramic filter according to claim 1, wherein the sum of the series resonant elements and the parallel resonant elements is an even number, and the resonant element located at the center with the minimum ΔF is two resonant elements. (4) 4 series resonant elements and 4 parallel resonant elements each
Claim 1: There are an even number of resonant elements greater than or equal to 1, and the centrally located resonant element with the smallest ΔF is four resonant elements.
Ladder type ceramic filter.
JP1988087094U 1987-07-22 1988-06-30 Expired - Lifetime JPH0522986Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988087094U JPH0522986Y2 (en) 1987-07-22 1988-06-30

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP11231587 1987-07-22
JP1988087094U JPH0522986Y2 (en) 1987-07-22 1988-06-30

Publications (2)

Publication Number Publication Date
JPH0191328U true JPH0191328U (en) 1989-06-15
JPH0522986Y2 JPH0522986Y2 (en) 1993-06-14

Family

ID=31718612

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988087094U Expired - Lifetime JPH0522986Y2 (en) 1987-07-22 1988-06-30

Country Status (1)

Country Link
JP (1) JPH0522986Y2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001024476A (en) * 1999-06-02 2001-01-26 Agilent Technol Inc Transmission and reception switching device
JP2001251102A (en) * 2000-02-04 2001-09-14 Lucent Technol Inc Thin film resonator filter and method for constructing the same

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6217413A (en) * 1985-07-15 1987-01-26 トヨタ自動車株式会社 Connecting structure of shaft member

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6217413A (en) * 1985-07-15 1987-01-26 トヨタ自動車株式会社 Connecting structure of shaft member

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001024476A (en) * 1999-06-02 2001-01-26 Agilent Technol Inc Transmission and reception switching device
JP2001251102A (en) * 2000-02-04 2001-09-14 Lucent Technol Inc Thin film resonator filter and method for constructing the same

Also Published As

Publication number Publication date
JPH0522986Y2 (en) 1993-06-14

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