GB1191984A - Improvements in or relating to Electrical Filters - Google Patents

Improvements in or relating to Electrical Filters

Info

Publication number
GB1191984A
GB1191984A GB2577968A GB2577968A GB1191984A GB 1191984 A GB1191984 A GB 1191984A GB 2577968 A GB2577968 A GB 2577968A GB 2577968 A GB2577968 A GB 2577968A GB 1191984 A GB1191984 A GB 1191984A
Authority
GB
United Kingdom
Prior art keywords
resonators
coupled
resonator
relating
comb
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.)
Expired
Application number
GB2577968A
Inventor
Brian Frederick Nicholson
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi 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 Marconi Co Ltd filed Critical Marconi Co Ltd
Priority to GB2577968A priority Critical patent/GB1191984A/en
Priority to DE19691925610 priority patent/DE1925610A1/en
Publication of GB1191984A publication Critical patent/GB1191984A/en
Expired 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
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/205—Comb or interdigital filters; Cascaded coaxial cavities

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

1,191,984. Comb-line filters. MARCONI CO. Ltd. 29 April, 1969 [29 May, 1968], No. 25779/68. Heading H1W. Attenuation peaks at either or both limits of the pass-band of a comb-line or interdigital filter are provided by appropriately tuned, shunt resonators coupled to the input, output or intermediate resonators of the filter. As shown, two such resonators 86, 87 are parallel-coupled to the output resonator 5 and one such resonator 85 is end-coupled to the input resonator 1. Resonators 1 and 5 provide impedance transformation in known fashion.
GB2577968A 1968-05-29 1968-05-29 Improvements in or relating to Electrical Filters Expired GB1191984A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2577968A GB1191984A (en) 1968-05-29 1968-05-29 Improvements in or relating to Electrical Filters
DE19691925610 DE1925610A1 (en) 1968-05-29 1969-05-20 Filter arrangement consisting of a microwave filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2577968A GB1191984A (en) 1968-05-29 1968-05-29 Improvements in or relating to Electrical Filters

Publications (1)

Publication Number Publication Date
GB1191984A true GB1191984A (en) 1970-05-13

Family

ID=10233162

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2577968A Expired GB1191984A (en) 1968-05-29 1968-05-29 Improvements in or relating to Electrical Filters

Country Status (2)

Country Link
DE (1) DE1925610A1 (en)
GB (1) GB1191984A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5151670A (en) * 1991-04-10 1992-09-29 Radio Frequency Systems, Inc. Duplexing filter
US5406234A (en) * 1992-12-30 1995-04-11 Itt Corporation Tunable microwave filter apparatus having a notch resonator
WO1998039813A1 (en) * 1997-03-05 1998-09-11 Tx Rx Systems Inc. Comb-line filter
GB2382233A (en) * 2001-08-08 2003-05-21 Koninkl Philips Electronics Nv Hybrid filter

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2578104B1 (en) * 1985-02-27 1987-03-20 Alcatel Thomson Faisceaux BAND PASS FILTER FOR MICROWAVE
FR2733090B1 (en) * 1995-04-13 1997-05-23 Thomson Csf CAVITY BAND PASS FILTER WITH COMB STRUCTURE AND RADIOALTIMETER EQUIPPED WITH AN INPUT FILTER OF THIS TYPE

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5151670A (en) * 1991-04-10 1992-09-29 Radio Frequency Systems, Inc. Duplexing filter
US5406234A (en) * 1992-12-30 1995-04-11 Itt Corporation Tunable microwave filter apparatus having a notch resonator
WO1998039813A1 (en) * 1997-03-05 1998-09-11 Tx Rx Systems Inc. Comb-line filter
US5808526A (en) * 1997-03-05 1998-09-15 Tx Rx Systems Inc. Comb-line filter
AU727368B2 (en) * 1997-03-05 2000-12-14 Tx Rx Systems Inc. Comb-line filter
GB2382233A (en) * 2001-08-08 2003-05-21 Koninkl Philips Electronics Nv Hybrid filter

Also Published As

Publication number Publication date
DE1925610A1 (en) 1969-12-04

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee
PCNP Patent ceased through non-payment of renewal fee