FR2326077A1 - Temp. stabilised RF filter - has coupled resonant cavities each with tuning screw in holder outside cavity wall - Google Patents

Temp. stabilised RF filter - has coupled resonant cavities each with tuning screw in holder outside cavity wall

Info

Publication number
FR2326077A1
FR2326077A1 FR7529411A FR7529411A FR2326077A1 FR 2326077 A1 FR2326077 A1 FR 2326077A1 FR 7529411 A FR7529411 A FR 7529411A FR 7529411 A FR7529411 A FR 7529411A FR 2326077 A1 FR2326077 A1 FR 2326077A1
Authority
FR
France
Prior art keywords
walls
stabilised
tuning screw
filter
temp
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
FR7529411A
Other languages
French (fr)
Other versions
FR2326077B1 (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 FR7529411A priority Critical patent/FR2326077A1/en
Publication of FR2326077A1 publication Critical patent/FR2326077A1/en
Application granted granted Critical
Publication of FR2326077B1 publication Critical patent/FR2326077B1/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
    • H01P1/207—Hollow waveguide filters
    • H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure

Landscapes

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

Abstract

The temperature-stabilised RF filter consists of inter-coupled resonant cavities each with a tuning screw extending down through one of its walls. The shanks of the screws have the shape of thin posts and do not touch the walls of their tubular holders or the walls of the cavities. The tubular holders extend outside the cavity walls and are internally threaded to take the threaded heads of the screws. The tubular holders and the walls of the cavities have the same coefficients of thermal expansion, or the former's coe. is greater than the latter.
FR7529411A 1975-09-25 1975-09-25 Temp. stabilised RF filter - has coupled resonant cavities each with tuning screw in holder outside cavity wall Granted FR2326077A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7529411A FR2326077A1 (en) 1975-09-25 1975-09-25 Temp. stabilised RF filter - has coupled resonant cavities each with tuning screw in holder outside cavity wall

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7529411A FR2326077A1 (en) 1975-09-25 1975-09-25 Temp. stabilised RF filter - has coupled resonant cavities each with tuning screw in holder outside cavity wall

Publications (2)

Publication Number Publication Date
FR2326077A1 true FR2326077A1 (en) 1977-04-22
FR2326077B1 FR2326077B1 (en) 1978-06-23

Family

ID=9160438

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7529411A Granted FR2326077A1 (en) 1975-09-25 1975-09-25 Temp. stabilised RF filter - has coupled resonant cavities each with tuning screw in holder outside cavity wall

Country Status (1)

Country Link
FR (1) FR2326077A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2452801A1 (en) * 1979-03-29 1980-10-24 Cit Alcatel MICROWAVE FILTER
US4465989A (en) * 1981-10-29 1984-08-14 Compagnie Industrielle Des Telecommunications Temperature-stabilized microwave filter
US5105174A (en) * 1989-11-30 1992-04-14 Alcatel Transmission Par Faisceaux Wave-guide band rejection filter having a short circuited coaxial tuning screw
EP0883203A2 (en) * 1997-06-02 1998-12-09 Com Dev Ltd. Filter with temperature compensated tuning screw

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2452801A1 (en) * 1979-03-29 1980-10-24 Cit Alcatel MICROWAVE FILTER
US4465989A (en) * 1981-10-29 1984-08-14 Compagnie Industrielle Des Telecommunications Temperature-stabilized microwave filter
US5105174A (en) * 1989-11-30 1992-04-14 Alcatel Transmission Par Faisceaux Wave-guide band rejection filter having a short circuited coaxial tuning screw
EP0883203A2 (en) * 1997-06-02 1998-12-09 Com Dev Ltd. Filter with temperature compensated tuning screw
EP0883203A3 (en) * 1997-06-02 1999-10-27 Com Dev Ltd. Filter with temperature compensated tuning screw

Also Published As

Publication number Publication date
FR2326077B1 (en) 1978-06-23

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Legal Events

Date Code Title Description
ST Notification of lapse