JPS6478001A - Polarization circuit for dielectric filter - Google Patents

Polarization circuit for dielectric filter

Info

Publication number
JPS6478001A
JPS6478001A JP23585087A JP23585087A JPS6478001A JP S6478001 A JPS6478001 A JP S6478001A JP 23585087 A JP23585087 A JP 23585087A JP 23585087 A JP23585087 A JP 23585087A JP S6478001 A JPS6478001 A JP S6478001A
Authority
JP
Japan
Prior art keywords
capacitor
coupled
resonator
poles
polarization element
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.)
Pending
Application number
JP23585087A
Other languages
Japanese (ja)
Inventor
Sadao Yamashita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing Co Ltd
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 by Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Priority to JP23585087A priority Critical patent/JPS6478001A/en
Publication of JPS6478001A publication Critical patent/JPS6478001A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To obtain a required attenuation quantity in a wide band area by forming plural poles in either a high or a low frequency band area side by setting different impedance for polarization element connected to a resonator. CONSTITUTION:The resonators f1-f4 are inductive-coupled by coils 1-3, and input and an output terminals 4 and 5 and the resonators f1 and f4 are capaitive- coupled by capacitors C3 and C4. And the input terminal 4 and the resonator f2 are capacitive-coupled by a capacitor C1 as the polarization element, and also, the resonator f3 and the output terminal 5 are capacitive-coupled by a capacitor C2 as the polarization element. In other words, the impedance of either on one side of the capacitor C1 or C2 is set so as to be larger than that of the capacitor on the other side. In such a way, since it follows that two poles are formed by the deviation of positions where the poles are formed, and bouncing can be prevented from being generated, and it is possible to uniformize the attenuation quantity, the attenuation quantity can be taken in the wide band area.
JP23585087A 1987-09-18 1987-09-18 Polarization circuit for dielectric filter Pending JPS6478001A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23585087A JPS6478001A (en) 1987-09-18 1987-09-18 Polarization circuit for dielectric filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23585087A JPS6478001A (en) 1987-09-18 1987-09-18 Polarization circuit for dielectric filter

Publications (1)

Publication Number Publication Date
JPS6478001A true JPS6478001A (en) 1989-03-23

Family

ID=16992183

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23585087A Pending JPS6478001A (en) 1987-09-18 1987-09-18 Polarization circuit for dielectric filter

Country Status (1)

Country Link
JP (1) JPS6478001A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03254203A (en) * 1990-03-02 1991-11-13 Fujitsu Ltd Dielectric filter and its resonator
JPH0491501A (en) * 1990-08-07 1992-03-25 Matsushita Electric Ind Co Ltd Dielectric filter
US5202653A (en) * 1990-04-17 1993-04-13 Murata Manufacturing Co., Ltd. Band-pass filter including resonance elements coupled by a coupling line and a by-pass coupling line
US5412358A (en) * 1992-02-28 1995-05-02 Ngk Insulators, Ltd. Layered stripline filter
WO2022019041A1 (en) * 2020-07-22 2022-01-27 株式会社村田製作所 Band-pass filter and high-frequency front-end circuit comprising same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61269402A (en) * 1985-05-22 1986-11-28 Nippon Dengiyou Kosaku Kk Polar type band-pass filter
JPS6251803A (en) * 1985-08-30 1987-03-06 Murata Mfg Co Ltd Microwave filter
JPS62159501A (en) * 1986-01-04 1987-07-15 Nippon Dengiyou Kosaku Kk Polar type band pass filter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61269402A (en) * 1985-05-22 1986-11-28 Nippon Dengiyou Kosaku Kk Polar type band-pass filter
JPS6251803A (en) * 1985-08-30 1987-03-06 Murata Mfg Co Ltd Microwave filter
JPS62159501A (en) * 1986-01-04 1987-07-15 Nippon Dengiyou Kosaku Kk Polar type band pass filter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03254203A (en) * 1990-03-02 1991-11-13 Fujitsu Ltd Dielectric filter and its resonator
US5202653A (en) * 1990-04-17 1993-04-13 Murata Manufacturing Co., Ltd. Band-pass filter including resonance elements coupled by a coupling line and a by-pass coupling line
JPH0491501A (en) * 1990-08-07 1992-03-25 Matsushita Electric Ind Co Ltd Dielectric filter
US5412358A (en) * 1992-02-28 1995-05-02 Ngk Insulators, Ltd. Layered stripline filter
WO2022019041A1 (en) * 2020-07-22 2022-01-27 株式会社村田製作所 Band-pass filter and high-frequency front-end circuit comprising same

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