GB1426406A - Microwave harmonic filter - Google Patents

Microwave harmonic filter

Info

Publication number
GB1426406A
GB1426406A GB957074A GB957074A GB1426406A GB 1426406 A GB1426406 A GB 1426406A GB 957074 A GB957074 A GB 957074A GB 957074 A GB957074 A GB 957074A GB 1426406 A GB1426406 A GB 1426406A
Authority
GB
United Kingdom
Prior art keywords
plane
junction
arm
junctions
input
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
GB957074A
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.)
Varian Medical Systems Inc
Original Assignee
Varian Associates 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 Varian Associates Inc filed Critical Varian Associates Inc
Publication of GB1426406A publication Critical patent/GB1426406A/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
    • H01P1/212—Frequency-selective devices, e.g. filters suppressing or attenuating harmonic frequencies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/16—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion
    • H01P1/162—Auxiliary devices for mode selection, e.g. mode suppression or mode promotion; for mode conversion absorbing spurious or unwanted modes of propagation

Landscapes

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

Abstract

1426406 Waveguide harmonic filters VARIAN ASSOCIATES 4 March 1974 [5 March 1973] 9570/74 Heading H1W A microwave harmonic filter comprises alternating H-plane and E-plane T-junctions. The filter shown consists of H-plane junctions 11, 13 and E-plane junction 12. At each junction, the input arm is prolonged beyond the junction into a filtering arm (21, 22, 23) containing an E-plane septum (e.g. 32) which divides this arm into two waveguides (e.g. 29, 30) having a cutoff frequency greater than that of the fundamental and less than that of the harmonic frequencies. The harmonic frequencies are attenuated by dissipative terminations (e.g. 33, 33) of pyramidal form. The septum 45 of the E-plane junction 12 is provided with a tapered edge opposite the output arm of the junction. The Specification also describes a filter comprising six junctions arranged in such a manner that the input and output waveguides are aligned and the polarization of the output wave is the same as that of the input wave (Figs. 2, 3, 4, not shown).
GB957074A 1973-03-05 1974-03-04 Microwave harmonic filter Expired GB1426406A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00337972A US3805193A (en) 1973-03-05 1973-03-05 Microwave harmonic filter employing cascaded alternate e-plane and h-plane t-junctions

Publications (1)

Publication Number Publication Date
GB1426406A true GB1426406A (en) 1976-02-25

Family

ID=23322836

Family Applications (1)

Application Number Title Priority Date Filing Date
GB957074A Expired GB1426406A (en) 1973-03-05 1974-03-04 Microwave harmonic filter

Country Status (8)

Country Link
US (1) US3805193A (en)
JP (1) JPS5727601B2 (en)
AU (1) AU477006B2 (en)
CA (1) CA998447A (en)
DE (1) DE2410396C2 (en)
FR (1) FR2220886B1 (en)
GB (1) GB1426406A (en)
IT (1) IT1007413B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4542352A (en) * 1983-06-17 1985-09-17 Motorola, Inc. Cavity oscillator with undesired mode absorbing waveguides for linear FM
GB2456043B (en) * 2007-12-28 2011-11-30 Furuno Electric Co Harmonic suppression resonator, harmonic propagation blocking filter, and radar apparatus
RU2459321C1 (en) * 2011-07-22 2012-08-20 Дмитрий Сергеевич Рыженко Suppression filter of microwave range
JP6080538B2 (en) * 2012-12-25 2017-02-15 三菱電機株式会社 Filter circuit
GB2599720A (en) * 2020-10-09 2022-04-13 Elekta ltd RF source protection

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB664668A (en) * 1949-10-17 1952-01-09 Easycantop Ltd Improvements in or relating to apparatus for scoring end closures for cans
US2639326A (en) * 1951-03-06 1953-05-19 Bell Telephone Labor Inc Electromagnetic wave microwave frequency structure using hybrid junctions
US2795763A (en) * 1951-05-03 1957-06-11 Bell Telephone Labor Inc Microwave filters
US2762986A (en) * 1951-08-24 1956-09-11 Raytheon Mfg Co Low pass filters
US2961619A (en) * 1957-06-21 1960-11-22 Sperry Rand Corp Microwave filter
DE1240568B (en) * 1964-08-13 1967-05-18 Deutsche Post Inst Harmonic filter for microwaves
US3593220A (en) * 1968-07-15 1971-07-13 Varian Associates High power microwave low-pass filter of the leaky wall type

Also Published As

Publication number Publication date
IT1007413B (en) 1976-10-30
CA998447A (en) 1976-10-12
JPS5042770A (en) 1975-04-18
AU477006B2 (en) 1976-10-14
FR2220886A1 (en) 1974-10-04
DE2410396A1 (en) 1974-09-12
JPS5727601B2 (en) 1982-06-11
AU6585774A (en) 1975-08-21
US3805193A (en) 1974-04-16
DE2410396C2 (en) 1985-10-03
FR2220886B1 (en) 1978-01-06

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee