GB1250720A - - Google Patents

Info

Publication number
GB1250720A
GB1250720A GB1250720DA GB1250720A GB 1250720 A GB1250720 A GB 1250720A GB 1250720D A GB1250720D A GB 1250720DA GB 1250720 A GB1250720 A GB 1250720A
Authority
GB
United Kingdom
Prior art keywords
mode
resonator
modes
march
consist
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
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 filed Critical
Publication of GB1250720A publication Critical patent/GB1250720A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/10—Dielectric resonators
    • 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

1,250,720. Suppressing waveguide modes. WESTERN ELECTRIC CO. Inc. 27 March, 1969 [29 March, 1968], No. 15999/69. Heading H1W. Unwanted waveguide modes are suppressed by means of a suitably positioned dielectric resonator which is associated with a dissipative element. The resonator 16 may consist of a cylinder 11 of TiO 2 dimensioned to resonate at an appropriate frequency in a TE mode. Such a mode is excited when the resonator is placed in an R.F. magnetic field coincident with its axis. Thus, a resonator 16 placed as shown in a rectangular waveguide 15 will couple to the TE 30 mode, which it is desired to suppress, but not to the fundamental TE 10 mode. Energy thus coupled to the resonator is dissipated in a resistive element which may consist of an annular film 12 of tantalum having a resistance equal to the characteristic impedance of the selected mode. A number of such resonators may be distributed at appropriate positions in the same transverse plane. They may be imbedded in a support member made of a material of low dielectric constant. Figs. 4, 5 (not shown) illustrate arrangements for suppressing: (a) the TE 20 mode, (b) the orthogonal TE 03 and TE 30 modes in a square guide.
GB1250720D 1968-03-29 1969-03-27 Expired GB1250720A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US71715068A 1968-03-29 1968-03-29

Publications (1)

Publication Number Publication Date
GB1250720A true GB1250720A (en) 1971-10-20

Family

ID=24880904

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1250720D Expired GB1250720A (en) 1968-03-29 1969-03-27

Country Status (6)

Country Link
US (1) US3548348A (en)
BE (1) BE730680A (en)
DE (1) DE1915736C3 (en)
FR (1) FR2005096A1 (en)
GB (1) GB1250720A (en)
SE (1) SE339034B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2222315A (en) * 1988-08-24 1990-02-28 Murata Manufacturing Co Dielectric resonator

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE350616B (en) * 1971-03-02 1972-10-30 Lkb Produkter Ab
US4124830A (en) * 1977-09-27 1978-11-07 Bell Telephone Laboratories, Incorporated Waveguide filter employing dielectric resonators
US4240049A (en) * 1979-09-24 1980-12-16 Bell Telephone Laboratories, Incorporated Waveguide junction circulator having spurious mode absorbing means
US4602229A (en) * 1983-12-30 1986-07-22 Motorola, Inc. Resonant bandpass T filter and power splitter
US4692723A (en) * 1985-07-08 1987-09-08 Ford Aerospace & Communications Corporation Narrow bandpass dielectric resonator filter with mode suppression pins

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3251011A (en) * 1959-11-05 1966-05-10 Bell Telephone Labor Inc Filter for passing selected te circular mode and absorbing other te circular modes
US3300729A (en) * 1963-10-30 1967-01-24 Rca Corp Non-linear element mounted high dielectric resonator used in parametric and tunnel diode amplifiers, harmonic generators, mixers and oscillators
US3475642A (en) * 1966-08-10 1969-10-28 Research Corp Microwave slow wave dielectric structure and electron tube utilizing same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2222315A (en) * 1988-08-24 1990-02-28 Murata Manufacturing Co Dielectric resonator
US5059929A (en) * 1988-08-24 1991-10-22 Murata Mfg., Co. Ltd. Dielectric resonator
GB2222315B (en) * 1988-08-24 1993-04-07 Murata Manufacturing Co Dielectric resonator

Also Published As

Publication number Publication date
SE339034B (en) 1971-09-27
FR2005096A1 (en) 1969-12-05
DE1915736A1 (en) 1969-10-09
US3548348A (en) 1970-12-15
BE730680A (en) 1969-09-01
DE1915736C3 (en) 1979-05-31
DE1915736B2 (en) 1978-10-05

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee