GB649732A - Improvements in or relating to electrical waveguides - Google Patents

Improvements in or relating to electrical waveguides

Info

Publication number
GB649732A
GB649732A GB8746/48A GB874648A GB649732A GB 649732 A GB649732 A GB 649732A GB 8746/48 A GB8746/48 A GB 8746/48A GB 874648 A GB874648 A GB 874648A GB 649732 A GB649732 A GB 649732A
Authority
GB
United Kingdom
Prior art keywords
guide
piston
wave
slots
quarter
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
GB8746/48A
Inventor
John Collard
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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
Priority to NL696912068A priority Critical patent/NL145326B/en
Priority to NL78957D priority patent/NL78957C/xx
Application filed by EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB8746/48A priority patent/GB649732A/en
Priority to US81656A priority patent/US2675524A/en
Priority to FR983312D priority patent/FR983312A/en
Publication of GB649732A publication Critical patent/GB649732A/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
    • H01P1/24—Terminating devices
    • H01P1/28—Short-circuiting plungers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P7/00—Resonators of the waveguide type
    • H01P7/06—Cavity resonators

Landscapes

  • Pistons, Piston Rings, And Cylinders (AREA)
  • Non-Reversible Transmitting Devices (AREA)

Abstract

649,732. Wave-guides. ELECTRIC & MUSICAL INDUSTRIES, Ltd. March 25, 1948, No. 8746. [Class 40 (viii)] A tuning piston for a non-circular wave-guide is arranged close to the guide surfaces in which maximum current flows, but more widely spaced from the other guide surfaces. A rectangular wave-guide 1 has a cylindrical piston 2, integral with an adjusting screw 3, and arranged to be close to the middle of the broad. sides. The piston can rotate in the guide and is provided with annular quarter-wave slots 4, spaced apart by a quarter wave-length, to prevent energy flow in the co-axial circuit formed by the guide and the piston. The slots may be arranged obliquely to the piston axis, or may be filled with dielectric.
GB8746/48A 1948-03-25 1948-03-25 Improvements in or relating to electrical waveguides Expired GB649732A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
NL696912068A NL145326B (en) 1948-03-25 ARMY COMBINATION.
NL78957D NL78957C (en) 1948-03-25
GB8746/48A GB649732A (en) 1948-03-25 1948-03-25 Improvements in or relating to electrical waveguides
US81656A US2675524A (en) 1948-03-25 1949-03-16 Electrical wave guide provided with tuning pistons
FR983312D FR983312A (en) 1948-03-25 1949-03-18 Electric waveguide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8746/48A GB649732A (en) 1948-03-25 1948-03-25 Improvements in or relating to electrical waveguides

Publications (1)

Publication Number Publication Date
GB649732A true GB649732A (en) 1951-01-31

Family

ID=9858479

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8746/48A Expired GB649732A (en) 1948-03-25 1948-03-25 Improvements in or relating to electrical waveguides

Country Status (4)

Country Link
US (1) US2675524A (en)
FR (1) FR983312A (en)
GB (1) GB649732A (en)
NL (2) NL145326B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1211298B (en) * 1963-10-28 1966-02-24 Philips Patentverwaltung Tunable waveguide resonator for high-frequency electrical oscillations
US3806842A (en) * 1972-11-13 1974-04-23 Harvard Ind Inc Re-entrant radial choke for cavity resonator with displacing mechanism
US3975695A (en) * 1975-06-10 1976-08-17 The United States Of America As Represented By The Secretary Of The Army Waveguide beyond cutoff coupler for coupling to resonant cavity
US4688008A (en) * 1986-02-03 1987-08-18 Motorola, Inc. Locking, adjustable waveguide shorting piston
US5138289A (en) * 1990-12-21 1992-08-11 California Institute Of Technology Noncontacting waveguide backshort
IT1261423B (en) * 1993-03-19 1996-05-23 Alenia Spazio Spa VARIABLE PLANAR POWER DIVIDER.
US8823471B2 (en) * 2009-05-28 2014-09-02 James Stenec Waveguide backshort electrically insulated from waveguide walls through an airgap

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE23131E (en) * 1949-06-28 Tuned microwave wattmeter
US2106769A (en) * 1935-08-23 1938-02-01 American Telephone & Telegraph Transmission of guided waves
US2451876A (en) * 1943-06-05 1948-10-19 Winfield W Salisbury Radio-frequency joint
FR958806A (en) * 1944-02-09 1950-03-21
US2441598A (en) * 1944-06-16 1948-05-18 Bell Telephone Labor Inc Wave transmission
US2530248A (en) * 1945-04-16 1950-11-14 Western Electric Co Method and apparatus for measuring electrical properties
US2518092A (en) * 1945-07-24 1950-08-08 Philco Corp Ultra high frequency band-pass circuits
BE472577A (en) * 1946-04-26

Also Published As

Publication number Publication date
NL145326B (en)
NL78957C (en)
FR983312A (en) 1951-06-21
US2675524A (en) 1954-04-13

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