GB1236983A - Improvements in or relating to electro-magnetic wave filters - Google Patents

Improvements in or relating to electro-magnetic wave filters

Info

Publication number
GB1236983A
GB1236983A GB41265/68A GB4126568A GB1236983A GB 1236983 A GB1236983 A GB 1236983A GB 41265/68 A GB41265/68 A GB 41265/68A GB 4126568 A GB4126568 A GB 4126568A GB 1236983 A GB1236983 A GB 1236983A
Authority
GB
United Kingdom
Prior art keywords
waveguide
irises
filter
factors
transmission line
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
GB41265/68A
Inventor
Han-Chiu Wang
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB1236983A publication Critical patent/GB1236983A/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

1,236,983. Filters. WESTERN ELECTRIC CO. Inc. 29 Aug., 1968 [7 Sept., 1967], No. 41265/68. Heading H1W. A waveguide filter comprises a number, e.g. three, half-wavelength resonators 11, 12, 13 coupled to a rectangular waveguide 10 by irises 14, 15, 16, the sections of waveguide between the irises being of restricted width. To this end, the waveguide may contain conductive slabs 20, 21 through which extend screws 17, 18, 19 for tuning the irises. The filter is based upon the transmission line equivalent (Fig. 5) of a lumped element prototype, and the final step in the design consists of realizing in waveguide form the transmission line stubs Z 1 , Z 2 , Z 3 and coupling sections Z 12 , Z 23 . It is shown that the stubs can be realized by means of half-wavelength cavities of given loaded Q factors. The correct Q factors can be obtained by adjustment of the screws. The characteristic impedances Z 12 , Z 23 are realized by adjusting the dimensions of the waveguide between the irises. The Specification sets forth in detail the design procedure for obtaining a maximally-flat threesection filter.
GB41265/68A 1967-09-07 1968-08-29 Improvements in or relating to electro-magnetic wave filters Expired GB1236983A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US66601367A 1967-09-07 1967-09-07

Publications (1)

Publication Number Publication Date
GB1236983A true GB1236983A (en) 1971-06-23

Family

ID=24672463

Family Applications (1)

Application Number Title Priority Date Filing Date
GB41265/68A Expired GB1236983A (en) 1967-09-07 1968-08-29 Improvements in or relating to electro-magnetic wave filters

Country Status (6)

Country Link
US (1) US3579153A (en)
BE (1) BE720055A (en)
DE (1) DE1791017B1 (en)
FR (1) FR1582682A (en)
GB (1) GB1236983A (en)
NL (1) NL6812761A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3673522A (en) * 1971-04-05 1972-06-27 Northern Electric Co Microwave balanced external cavity rejection filter
US4124830A (en) * 1977-09-27 1978-11-07 Bell Telephone Laboratories, Incorporated Waveguide filter employing dielectric resonators
US4321568A (en) * 1980-09-19 1982-03-23 Bell Telephone Laboratories, Incorporated Waveguide filter employing common phase plane coupling
DE3119925C2 (en) * 1981-07-10 1983-07-21 András Dipl.-Ing. 1116 Budapest Bely Method and device for earth fault location on high-voltage overhead line networks
DE3673622D1 (en) * 1985-12-13 1990-09-27 Siemens Ag TAPE LOCK FOR SHORT ELECTROMAGNETIC SHAFTS WITH LINE ELEMENTS.
CA1260083A (en) * 1986-12-04 1989-09-26 Chuck K. Mok Phase slope equalizer for satellite attennas
CA1259676A (en) * 1986-12-04 1989-09-19 Chuck K. Mok 14/12 ghz duplexer
US5428322A (en) * 1994-02-22 1995-06-27 Hughes Aircraft Company Microwave waveguide multiplexer
KR20150112179A (en) * 2014-03-27 2015-10-07 한국전자통신연구원 Waveguide Band Pass Filter using Short-circuit Stub for Out-of-Band Improvement

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE468045A (en) * 1942-07-30
US2649576A (en) * 1949-10-07 1953-08-18 Bell Telephone Labor Inc Pseudohybrid microwave device
US3058072A (en) * 1956-11-15 1962-10-09 Raytheon Co Microwave filters
US2961619A (en) * 1957-06-21 1960-11-22 Sperry Rand Corp Microwave filter
GB1018923A (en) * 1963-01-14 1966-02-02 Standard Telephones Cables Ltd Waveguide filters
US3237134A (en) * 1963-03-26 1966-02-22 Gen Electric Microwave filter
US3215955A (en) * 1964-06-01 1965-11-02 Motorola Inc Waveguide switching by variable tuning of a cavity which shunts a band-pass filter
US3451014A (en) * 1964-12-23 1969-06-17 Microwave Dev Lab Inc Waveguide filter having branch means to absorb or attenuate frequencies above pass-band
US3353123A (en) * 1965-09-01 1967-11-14 Gen Electric Microwave filter comprising absorbing structures for removing suprious wave energy

Also Published As

Publication number Publication date
BE720055A (en) 1969-02-03
DE1791017B1 (en) 1972-05-31
NL6812761A (en) 1969-03-11
FR1582682A (en) 1969-10-03
US3579153A (en) 1971-05-18

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