US3886499A - High frequency electrical network with frequency dependent characteristics having a constant input resistance - Google Patents

High frequency electrical network with frequency dependent characteristics having a constant input resistance Download PDF

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Publication number
US3886499A
US3886499A US385291A US38529173A US3886499A US 3886499 A US3886499 A US 3886499A US 385291 A US385291 A US 385291A US 38529173 A US38529173 A US 38529173A US 3886499 A US3886499 A US 3886499A
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US
United States
Prior art keywords
cavity
network
coaxial line
cavity resonator
coupler
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 - Lifetime
Application number
US385291A
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English (en)
Inventor
Ronald Hutchinson
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconi Co Ltd
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 Marconi Co Ltd filed Critical Marconi Co Ltd
Application granted granted Critical
Publication of US3886499A publication Critical patent/US3886499A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
    • H01P1/2138—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies using hollow waveguide filters

Definitions

  • Circuits of this kind may be constructed of coaxial lines but the necessary inclusion within such circuits of diplexers results in a complex, bulky and expensive structure.
  • circuits of this kind may instead be composed of waveguide structures.
  • waveguides are particularly bulky and expensive items and the present invention seeks to provide an electrical network which is inherently simpler or less expensive to construct than previously known circuits of this kind.
  • the length of the cavity in the natural direction of wave propagation is approximately half a wavelength at the resonant frequency.
  • each loop is mounted approximately halfway along the length of the cavity in this direction, as this results in maximum coupling between the loop and the cavity.
  • a network as claimed in claim 1 wherein the cavity comprises a short waveguide section each end of which is bounded by a flat electrical conductor.

Landscapes

  • Control Of Motors That Do Not Use Commutators (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
US385291A 1972-08-05 1973-08-03 High frequency electrical network with frequency dependent characteristics having a constant input resistance Expired - Lifetime US3886499A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3666572A GB1390809A (en) 1972-08-05 1972-08-05 Electrical networks for use at high frequencies

Publications (1)

Publication Number Publication Date
US3886499A true US3886499A (en) 1975-05-27

Family

ID=10390169

Family Applications (1)

Application Number Title Priority Date Filing Date
US385291A Expired - Lifetime US3886499A (en) 1972-08-05 1973-08-03 High frequency electrical network with frequency dependent characteristics having a constant input resistance

Country Status (3)

Country Link
US (1) US3886499A (en:Method)
GB (1) GB1390809A (en:Method)
NL (1) NL179014C (en:Method)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4231001A (en) * 1978-04-11 1980-10-28 The Marconi Company Limited Constant resistance coupling network
US4660005A (en) * 1984-08-10 1987-04-21 The Marconi Company Limited High frequency electrical network
US20100148889A1 (en) * 2007-04-25 2010-06-17 Peter Bohmer High-frequency component having low dielectric losses

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4119362A1 (de) * 1991-06-12 1992-12-17 Leybold Ag Teilchenquelle, insbesondere fuer reaktive ionenaetz- und plasmaunterstuetzte cvd-verfahren
GB9217679D0 (en) * 1992-08-20 1992-09-30 Marconi Gec Ltd Combiners for r.f.power amplifiers

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2357314A (en) * 1941-01-04 1944-09-05 Rca Corp Cavity resonator circuit
US2357313A (en) * 1940-10-01 1944-09-05 Rca Corp High frequency resonator and circuit therefor
US2420354A (en) * 1941-01-10 1947-05-13 Rca Corp Coupling circuit
US2476311A (en) * 1943-02-01 1949-07-19 Sperry Corp Ultra high frequency discriminator and apparatus
US2609450A (en) * 1946-04-30 1952-09-02 Harold C Early Radio frequency wattmeter
US2795763A (en) * 1951-05-03 1957-06-11 Bell Telephone Labor Inc Microwave filters
US2999988A (en) * 1953-03-23 1961-09-12 Pierre G Marie Resonant directional couplers

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2357313A (en) * 1940-10-01 1944-09-05 Rca Corp High frequency resonator and circuit therefor
US2357314A (en) * 1941-01-04 1944-09-05 Rca Corp Cavity resonator circuit
US2420354A (en) * 1941-01-10 1947-05-13 Rca Corp Coupling circuit
US2476311A (en) * 1943-02-01 1949-07-19 Sperry Corp Ultra high frequency discriminator and apparatus
US2609450A (en) * 1946-04-30 1952-09-02 Harold C Early Radio frequency wattmeter
US2795763A (en) * 1951-05-03 1957-06-11 Bell Telephone Labor Inc Microwave filters
US2999988A (en) * 1953-03-23 1961-09-12 Pierre G Marie Resonant directional couplers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4231001A (en) * 1978-04-11 1980-10-28 The Marconi Company Limited Constant resistance coupling network
US4660005A (en) * 1984-08-10 1987-04-21 The Marconi Company Limited High frequency electrical network
US20100148889A1 (en) * 2007-04-25 2010-06-17 Peter Bohmer High-frequency component having low dielectric losses

Also Published As

Publication number Publication date
NL179014C (nl) 1986-06-16
GB1390809A (en) 1975-04-16
DE2339441B2 (de) 1975-07-24
DE2339441A1 (de) 1974-02-21
NL7310634A (en:Method) 1974-02-07
NL179014B (nl) 1986-01-16

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