ATE69671T1 - MICROWAVE BANDPASS FILTERS WITH DIELECTRIC RESONATORS. - Google Patents

MICROWAVE BANDPASS FILTERS WITH DIELECTRIC RESONATORS.

Info

Publication number
ATE69671T1
ATE69671T1 AT86301617T AT86301617T ATE69671T1 AT E69671 T1 ATE69671 T1 AT E69671T1 AT 86301617 T AT86301617 T AT 86301617T AT 86301617 T AT86301617 T AT 86301617T AT E69671 T1 ATE69671 T1 AT E69671T1
Authority
AT
Austria
Prior art keywords
resonators
board
waveguide
beneath
microwave bandpass
Prior art date
Application number
AT86301617T
Other languages
German (de)
Inventor
Barry Albert Syrett
Paul Alan Kennard
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
Application granted granted Critical
Publication of ATE69671T1 publication Critical patent/ATE69671T1/en

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).
AT86301617T 1985-04-03 1986-03-06 MICROWAVE BANDPASS FILTERS WITH DIELECTRIC RESONATORS. ATE69671T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA000478332A CA1229389A (en) 1985-04-03 1985-04-03 Microwave bandpass filters including dielectric resonators
EP86301617A EP0197653B1 (en) 1985-04-03 1986-03-06 Microwave bandpass filter including dielectric resonators

Publications (1)

Publication Number Publication Date
ATE69671T1 true ATE69671T1 (en) 1991-12-15

Family

ID=4130192

Family Applications (1)

Application Number Title Priority Date Filing Date
AT86301617T ATE69671T1 (en) 1985-04-03 1986-03-06 MICROWAVE BANDPASS FILTERS WITH 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
JPS63500134A (en) * 1985-07-08 1988-01-14 スペイス・システムズ・ローラル・インコーポレイテッド Narrowband bandpass dielectric resonator filter
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
EP1676334B1 (en) 2003-10-21 2008-07-23 Continental Automotive GmbH Coupling structure for cylindrical resonators
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
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
CN101978551A (en) * 2007-12-13 2011-02-16 天瑞通讯产品有限公司 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

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5038500B1 (en) * 1970-11-26 1975-12-10
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
US4477785A (en) * 1981-12-02 1984-10-16 Communications Satellite Corporation Generalized dielectric resonator filter
JPS6179301A (en) * 1984-09-27 1986-04-22 Nec Corp Band-pass filter of dielectric resonator
US4686496A (en) * 1985-04-08 1987-08-11 Northern Telecom Limited Microwave bandpass filters including dielectric resonators mounted on a suspended substrate board

Also Published As

Publication number Publication date
CA1229389A (en) 1987-11-17
EP0197653A3 (en) 1988-06-22
DE3682523D1 (en) 1992-01-02
EP0197653A2 (en) 1986-10-15
AU575469B2 (en) 1988-07-28
AU5484886A (en) 1986-10-09
JPS61230501A (en) 1986-10-14
EP0197653B1 (en) 1991-11-21
JPH0733001U (en) 1995-06-16

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Legal Events

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RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties