EP0197653A3 - Microwave bandpass filter including dielectric resonators - Google Patents

Microwave bandpass filter including dielectric resonators Download PDF

Info

Publication number
EP0197653A3
EP0197653A3 EP86301617A EP86301617A EP0197653A3 EP 0197653 A3 EP0197653 A3 EP 0197653A3 EP 86301617 A EP86301617 A EP 86301617A EP 86301617 A EP86301617 A EP 86301617A EP 0197653 A3 EP0197653 A3 EP 0197653A3
Authority
EP
European Patent Office
Prior art keywords
resonators
board
waveguide
bandpass filter
beneath
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
EP86301617A
Other versions
EP0197653B1 (en
EP0197653A2 (en
Inventor
Barry Albert Syrett
Paul Alan Kennard
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.)
Nortel Networks Ltd
Original Assignee
Northern Telecom 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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Priority to AT86301617T priority Critical patent/ATE69671T1/en
Publication of EP0197653A2 publication Critical patent/EP0197653A2/en
Publication of EP0197653A3 publication Critical patent/EP0197653A3/en
Application granted granted Critical
Publication of EP0197653B1 publication Critical patent/EP0197653B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/219—Evanescent mode filters
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/207—Hollow waveguide filters
    • H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
    • H01P1/2084—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure with dielectric resonators

Landscapes

  • Control Of Motors That Do Not Use Commutators (AREA)
  • Waveguide Connection Structure (AREA)

Abstract

A dielectric resonator microwave bandpass filter includes a printed circuit board (40) supported within a cut-off waveguide (10, 12), with dielectric resonators (44) and coupling loops on an upper surface of the board and a well (42) beneath the board so that the resonators are well spaced from ground planes. Tuning screws (66) beneath the resonators, and coupling adjustment screws above the board adjacent to the coupling loops and between adjacent resonators, provide for adjustments to provide desired filter characteristics within a wide range. Isolators (30) within the waveguide have ports coupled to the resonators via micro-strip transmission lines comprising conductive tracks on the board and ports coupled to coaxial connectors (28) in end walls of the waveguide. The waveguide is formed from a cast body (10) and a flat lid (12).
EP86301617A 1985-04-03 1986-03-06 Microwave bandpass filter including dielectric resonators Expired - Lifetime EP0197653B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86301617T ATE69671T1 (en) 1985-04-03 1986-03-06 MICROWAVE BANDPASS FILTERS WITH DIELECTRIC RESONATORS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA478332 1985-04-03
CA000478332A CA1229389A (en) 1985-04-03 1985-04-03 Microwave bandpass filters including dielectric resonators

Publications (3)

Publication Number Publication Date
EP0197653A2 EP0197653A2 (en) 1986-10-15
EP0197653A3 true EP0197653A3 (en) 1988-06-22
EP0197653B1 EP0197653B1 (en) 1991-11-21

Family

ID=4130192

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86301617A Expired - Lifetime EP0197653B1 (en) 1985-04-03 1986-03-06 Microwave bandpass filter including dielectric resonators

Country Status (6)

Country Link
EP (1) EP0197653B1 (en)
JP (2) JPS61230501A (en)
AT (1) ATE69671T1 (en)
AU (1) AU575469B2 (en)
CA (1) CA1229389A (en)
DE (1) DE3682523D1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4692723A (en) * 1985-07-08 1987-09-08 Ford Aerospace & Communications Corporation Narrow bandpass dielectric resonator filter with mode suppression pins
JPS6221301A (en) * 1985-07-22 1987-01-29 Nec Corp Dielectric resonator filter
JPH03121703U (en) * 1990-03-27 1991-12-12
JPH03128304U (en) * 1990-04-02 1991-12-24
JPH04347909A (en) * 1991-05-24 1992-12-03 Nec Corp Dielectric resonator filter
GB2263363B (en) * 1992-01-07 1996-05-08 Marconi Gec Ltd Electrical filter
JP2800890B2 (en) * 1996-09-27 1998-09-21 日本電気株式会社 Microwave circuit
SE518119C2 (en) * 1996-12-20 2002-08-27 Ericsson Telefon Ab L M Resonance filter with adjustable filter mechanism
JP3480381B2 (en) * 1999-08-24 2003-12-15 株式会社村田製作所 Dielectric resonator device, dielectric filter, composite dielectric filter device, dielectric duplexer, and communication device
DE10348909A1 (en) * 2003-10-21 2005-06-02 Siemens Ag Filter element for filtering electromagnetic waves, especially bandpass filter or band blocking filter, has resonator held at distance from contacting structure in recess in circuit board by suitable attachment arrangement
JP2007509553A (en) 2003-10-21 2007-04-12 シーメンス　アクチエンゲゼルシヤフト Coupling structure for cylindrical resonators.
US7271679B2 (en) * 2005-06-30 2007-09-18 Intermec Ip Corp. Apparatus and method to facilitate wireless communications of automatic data collection devices in potentially hazardous environments
EP2229707A4 (en) * 2007-12-13 2011-01-19 Triasx Pty Ltd A microwave filter
CN103050760A (en) * 2012-12-10 2013-04-17 中兴通讯股份有限公司 Dielectric resonator and assembly method thereof and dielectric filter
WO2023138088A1 (en) * 2022-01-21 2023-07-27 Telefonaktiebolaget Lm Ericsson (Publ) Isolation-filtering unit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3798578A (en) * 1970-11-26 1974-03-19 Japan Broadcasting Corp Temperature compensated frequency stabilized composite dielectric resonator
US4477785A (en) * 1981-12-02 1984-10-16 Communications Satellite Corporation Generalized dielectric resonator filter
US4686496A (en) * 1985-04-08 1987-08-11 Northern Telecom Limited Microwave bandpass filters including dielectric resonators mounted on a suspended substrate board

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5176948A (en) * 1974-12-27 1976-07-03 Kokusai Denshin Denwa Co Ltd JUDENTAI KYOSHINKIOMOCHIITATAIIKITSUKAROHAKI
JPS51139745A (en) * 1975-05-28 1976-12-02 Oki Electric Ind Co Ltd Filter
JPS5945241B2 (en) * 1976-12-09 1984-11-05 株式会社東芝 Microwave circuit device using dielectric resonator
JPS5585101A (en) * 1978-12-22 1980-06-26 Nec Corp Dielectric substance drop-in filter
JPS58215101A (en) * 1982-06-08 1983-12-14 Tdk Corp Dielectric filter
JPS6179301A (en) * 1984-09-27 1986-04-22 Nec Corp Band-pass filter of dielectric resonator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3798578A (en) * 1970-11-26 1974-03-19 Japan Broadcasting Corp Temperature compensated frequency stabilized composite dielectric resonator
US4477785A (en) * 1981-12-02 1984-10-16 Communications Satellite Corporation Generalized dielectric resonator filter
US4686496A (en) * 1985-04-08 1987-08-11 Northern Telecom Limited Microwave bandpass filters including dielectric resonators mounted on a suspended substrate board

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
1977 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST, San Diego, 21st-23rd June 1977, pages 290-293, IEEE, Piscataway, US; J.K. PLOURDE et al.: "Microwave dielectric resonator filters utilizing Ba2Ti9O20 ceramics" *
1982 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST, Dallas, 15th-17th June 1982, pages 389-391, IEEE, Piscataway, US; C.L. REN: "Mode suppressor for dielectric resonator filters" *
1982 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST, Dallas, 15th-17th June 1982, pages 416-418, IEEE, Piscataway, US; M.L. MAJEWSKI et al.: "MIC directional filters using dielectric resonators" *
PATENT ABSTRACTS OF JAPAN, vol. 1, no. 42, 25th April 1977, page 2624 E 76; & JP-A-51 139 745 (OKI DENKI KOHGYO K.K.) 02-12-1976 *
PATENT ABSTRACTS OF JAPAN, vol. 2, no. 106, 31st August 1978, page 5659 E 78; & JP-A-53 72 438 (TOKYO SHIBAURA DENKI K.K.) 27-06-1978 *
PATENT ABSTRACTS OF JAPAN, vol. 8, no. 66 (E-234)[1503], 28th March 1984; & JP-A-58 215 101 (TDK K.K.) 14-12-1983 *

Also Published As

Publication number Publication date
ATE69671T1 (en) 1991-12-15
CA1229389A (en) 1987-11-17
EP0197653B1 (en) 1991-11-21
DE3682523D1 (en) 1992-01-02
AU575469B2 (en) 1988-07-28
AU5484886A (en) 1986-10-09
JPS61230501A (en) 1986-10-14
EP0197653A2 (en) 1986-10-15
JPH0733001U (en) 1995-06-16

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