GB843341A - Improvements in or relating to electric filter circuits - Google Patents

Improvements in or relating to electric filter circuits

Info

Publication number
GB843341A
GB843341A GB3885256A GB3885256A GB843341A GB 843341 A GB843341 A GB 843341A GB 3885256 A GB3885256 A GB 3885256A GB 3885256 A GB3885256 A GB 3885256A GB 843341 A GB843341 A GB 843341A
Authority
GB
United Kingdom
Prior art keywords
stub
stubs
probes
sections
waveguide
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
GB3885256A
Inventor
Kenneth Guy Patterson
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.)
General Electric Co PLC
Original Assignee
General Electric Co PLC
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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB3885256A priority Critical patent/GB843341A/en
Priority to FR1195339D priority patent/FR1195339A/en
Publication of GB843341A publication Critical patent/GB843341A/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
    • H01P1/207—Hollow waveguide filters
    • H01P1/209—Hollow waveguide filters comprising one or more branching arms or cavities wholly outside the main waveguide

Landscapes

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

Abstract

843,341. High frequency filters. GENERAI ELECTRIC CO. Ltd. Dec. 9, 1957 [Dec. 20 1956], No. 38852/56. Class 40(8). At least twc frequency sensitive impedances, which may comprise coaxial stubs are coupled by probes to a hollow pipe waveguide to form an electric filter circuit. The waveguide 1 of rectangular crosssection carries three coaxial stubs, 2, 3 and 4 having probes 9, 10 and 11 respectively, to form a band stop filter with a mid-band frequency of 2000 mc/s and these stubs are spaced a distance apart of a quarter of a wavelength at this frequency on a major wall 5 of waveguide 1. The stub 2 has an outer conductor 6 with the inner conductor formed in three sections 13a, 13b, 13c, the central one 13b having a greater diameter than the others; the physical length of the stub having sections with differing characteristic impedance being less than that of the equivalent uniform stub line. Stub 4 is similar to stub 2, but the central portion 14b of stub 3 is smaller in diameter than sections 13b, 15b. The probes 9, 10 and 11 are formed as extensions of the central conductors of the stubs and each stub is provided with a variable capacity termination, e.g. 16. The embodiment of Fig. 2 (not shown) is a band pass filter with four coaxial stubs. Specification 659,812 is referred to.
GB3885256A 1956-12-20 1956-12-20 Improvements in or relating to electric filter circuits Expired GB843341A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3885256A GB843341A (en) 1956-12-20 1956-12-20 Improvements in or relating to electric filter circuits
FR1195339D FR1195339A (en) 1956-12-20 1957-12-19 Electric filter circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3885256A GB843341A (en) 1956-12-20 1956-12-20 Improvements in or relating to electric filter circuits

Publications (1)

Publication Number Publication Date
GB843341A true GB843341A (en) 1960-08-04

Family

ID=10406088

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3885256A Expired GB843341A (en) 1956-12-20 1956-12-20 Improvements in or relating to electric filter circuits

Country Status (2)

Country Link
FR (1) FR1195339A (en)
GB (1) GB843341A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4752753A (en) * 1986-09-04 1988-06-21 Wavecom Coaxial waveguide band reject filter
US4783639A (en) * 1985-11-21 1988-11-08 Hughes Aircraft Company Wideband microwave diplexer including band pass and band stop resonators
FR2655199A1 (en) * 1989-11-30 1991-05-31 Alcatel Transmission BAND REMOVAL FILTER FOR MICROWAVE WAVEGUIDE.

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4783639A (en) * 1985-11-21 1988-11-08 Hughes Aircraft Company Wideband microwave diplexer including band pass and band stop resonators
US4752753A (en) * 1986-09-04 1988-06-21 Wavecom Coaxial waveguide band reject filter
FR2655199A1 (en) * 1989-11-30 1991-05-31 Alcatel Transmission BAND REMOVAL FILTER FOR MICROWAVE WAVEGUIDE.
EP0430136A1 (en) * 1989-11-30 1991-06-05 Alcatel Telspace Band elimination filter for microwave waveguide
US5105174A (en) * 1989-11-30 1992-04-14 Alcatel Transmission Par Faisceaux Wave-guide band rejection filter having a short circuited coaxial tuning screw
TR24998A (en) * 1989-11-30 1992-09-01 Alcatel Transmission BAND ELIMINATOR FILTER, GUIDING HYPERFREQUENCY WAVES.

Also Published As

Publication number Publication date
FR1195339A (en) 1959-11-17

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