FR2346868A1 - Coupling filter for communications system - has triple-cavity filters connected between two three=DB couplers, to give required characteristics - Google Patents

Coupling filter for communications system - has triple-cavity filters connected between two three=DB couplers, to give required characteristics

Info

Publication number
FR2346868A1
FR2346868A1 FR7317005A FR7317005A FR2346868A1 FR 2346868 A1 FR2346868 A1 FR 2346868A1 FR 7317005 A FR7317005 A FR 7317005A FR 7317005 A FR7317005 A FR 7317005A FR 2346868 A1 FR2346868 A1 FR 2346868A1
Authority
FR
France
Prior art keywords
couplers
communications system
triple
required characteristics
coupling filter
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
FR7317005A
Other languages
French (fr)
Other versions
FR2346868B1 (en
Inventor
Jean-Pierre Boujet
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.)
Alcatel CIT SA
Original Assignee
Alcatel CIT SA
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 Alcatel CIT SA filed Critical Alcatel CIT SA
Priority to FR7317005A priority Critical patent/FR2346868A1/en
Publication of FR2346868A1 publication Critical patent/FR2346868A1/en
Application granted granted Critical
Publication of FR2346868B1 publication Critical patent/FR2346868B1/fr
Granted 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
    • H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
    • H01P1/2138—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies using hollow waveguide filters

Abstract

The coupling filter, for a communications system, consists of two 3dB couplers connected together by two identical filters. The filters (21, 22) are located between the two couplers. Each coupler consists of a hole (7) in the wall separating the two channels (3, 4) (cut parallel to one another in a metal block). A small post (8) in this hole provides capacities matching whilst steps (9, 10) on the outer walls of both channels act as impedance transformers. Each filter consists of 3 cavities separates by transverse walls (26) with holes (28) making coupling irises. Each cavity has a turning screw (29).
FR7317005A 1973-05-10 1973-05-10 Coupling filter for communications system - has triple-cavity filters connected between two three=DB couplers, to give required characteristics Granted FR2346868A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7317005A FR2346868A1 (en) 1973-05-10 1973-05-10 Coupling filter for communications system - has triple-cavity filters connected between two three=DB couplers, to give required characteristics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7317005A FR2346868A1 (en) 1973-05-10 1973-05-10 Coupling filter for communications system - has triple-cavity filters connected between two three=DB couplers, to give required characteristics

Publications (2)

Publication Number Publication Date
FR2346868A1 true FR2346868A1 (en) 1977-10-28
FR2346868B1 FR2346868B1 (en) 1978-04-21

Family

ID=9119129

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7317005A Granted FR2346868A1 (en) 1973-05-10 1973-05-10 Coupling filter for communications system - has triple-cavity filters connected between two three=DB couplers, to give required characteristics

Country Status (1)

Country Link
FR (1) FR2346868A1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4328451A1 (en) * 1993-08-24 1995-03-02 Hirschmann Richard Gmbh Co Waveguide filter
EP0729197A1 (en) * 1995-02-23 1996-08-28 Alcatel Espacio Waveguide microwave filter
EP0959517A1 (en) * 1998-05-18 1999-11-24 TRT Lucent Technologies (SA) Low loss duplexer without adjustment
EP0959519A1 (en) * 1998-05-18 1999-11-24 TRT Lucent Technologies (SA) Low loss duplexer without setting
CN103872411A (en) * 2014-03-25 2014-06-18 西安电子科技大学 Resonant window type filter
WO2014129283A1 (en) * 2013-02-19 2014-08-28 公立大学法人大阪府立大学 Waveguide-type image rejection filter, single-sideband receiver utilizing same, frequency divider, and sideband-separating receiver
EP3624256A4 (en) * 2017-05-09 2020-06-17 Fujikura Ltd. Directional coupler, waveguide device, and diplexer
EP3618175A4 (en) * 2017-04-28 2021-01-06 Fujikura Ltd. Diplexer and multiplexer
US11189897B2 (en) 2017-04-28 2021-11-30 Fujikura Ltd. Filter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
LIVRE DE G.L. MATHAEI E.A.: "MICROWAVE FILTERS, IMPEDANCE-MATCHING NET-WORKS AND COUPLING STRUCTURES" 1964 ) *

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4328451A1 (en) * 1993-08-24 1995-03-02 Hirschmann Richard Gmbh Co Waveguide filter
EP0729197A1 (en) * 1995-02-23 1996-08-28 Alcatel Espacio Waveguide microwave filter
EP0959517A1 (en) * 1998-05-18 1999-11-24 TRT Lucent Technologies (SA) Low loss duplexer without adjustment
EP0959519A1 (en) * 1998-05-18 1999-11-24 TRT Lucent Technologies (SA) Low loss duplexer without setting
US6191670B1 (en) 1998-05-18 2001-02-20 Alain Nguyen Low-loss duplexer without settings
WO2014129283A1 (en) * 2013-02-19 2014-08-28 公立大学法人大阪府立大学 Waveguide-type image rejection filter, single-sideband receiver utilizing same, frequency divider, and sideband-separating receiver
US9397378B2 (en) 2013-02-19 2016-07-19 Osaka Prefecture University Public Corporation Waveguide-type image rejection filter and single-sideband receiver, frequency divider, and sideband-separating receiver using the same filter
EP2960981A4 (en) * 2013-02-19 2016-10-12 Univ Osaka Prefect Public Corp Waveguide-type image rejection filter, single-sideband receiver utilizing same, frequency divider, and sideband-separating receiver
JPWO2014129283A1 (en) * 2013-02-19 2017-02-02 公立大学法人大阪府立大学 Waveguide type image rejection filter and single sideband receiver, frequency divider and sideband separation receiver using the same
CN103872411A (en) * 2014-03-25 2014-06-18 西安电子科技大学 Resonant window type filter
EP3618175A4 (en) * 2017-04-28 2021-01-06 Fujikura Ltd. Diplexer and multiplexer
US11121695B2 (en) 2017-04-28 2021-09-14 Fujikura Ltd. Diplexer and multiplexer
US11189897B2 (en) 2017-04-28 2021-11-30 Fujikura Ltd. Filter
EP3624256A4 (en) * 2017-05-09 2020-06-17 Fujikura Ltd. Directional coupler, waveguide device, and diplexer
US11196140B2 (en) 2017-05-09 2021-12-07 Fujikura Ltd. Directional coupler, waveguide device, and diplexer

Also Published As

Publication number Publication date
FR2346868B1 (en) 1978-04-21

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Legal Events

Date Code Title Description
ST Notification of lapse