GB683273A - Improvements in or relating to electrical impedance transformers for use at very high frequencies - Google Patents

Improvements in or relating to electrical impedance transformers for use at very high frequencies

Info

Publication number
GB683273A
GB683273A GB12575/51A GB1257551A GB683273A GB 683273 A GB683273 A GB 683273A GB 12575/51 A GB12575/51 A GB 12575/51A GB 1257551 A GB1257551 A GB 1257551A GB 683273 A GB683273 A GB 683273A
Authority
GB
United Kingdom
Prior art keywords
screw
relating
impedance transformers
varies
moves
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
GB12575/51A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical 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
Application filed by Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB683273A publication Critical patent/GB683273A/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P5/00—Coupling devices of the waveguide type
    • H01P5/04—Coupling devices of the waveguide type with variable factor of coupling

Abstract

683,273. High-frequency impedance transformers. PHILIPS ELECTRICAL INDUSTRIES, Ltd. May 29, 1951 [June 1, 1950], No. 12575/51. Class 40 (viii). An impedance transformer comprises two wave-guides 1 and 2, each closed at one end by an adjustable piston 3 or 4, and directively intercoupled so that a wave entering one guide divides into travelling waves of equal amplitude in each guide. The pistons are operated by a differential screw 12 which moves them equal distances in opposite directions, and by a screw 11 which moves them equal distances in the same direction. Calculation shows that operation of screw 12 varies the amplitude of waves emitted from the transformer and screw 11 varies their phase. The ends 5 and 6 of the guides serve as inlets and outlets for the apparatus and the end 6 may be provided with a reflectionless termination 22.
GB12575/51A 1950-06-01 1951-05-29 Improvements in or relating to electrical impedance transformers for use at very high frequencies Expired GB683273A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL297631X 1950-06-01

Publications (1)

Publication Number Publication Date
GB683273A true GB683273A (en) 1952-11-26

Family

ID=19783057

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12575/51A Expired GB683273A (en) 1950-06-01 1951-05-29 Improvements in or relating to electrical impedance transformers for use at very high frequencies

Country Status (7)

Country Link
US (1) US2768356A (en)
BE (1) BE503660A (en)
CH (1) CH297631A (en)
DE (1) DE845659C (en)
FR (1) FR1037905A (en)
GB (1) GB683273A (en)
NL (2) NL77472C (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2875415A (en) * 1955-01-17 1959-02-24 Sperry Rand Corp Microwave power multiplier
US2866166A (en) * 1955-04-08 1958-12-23 Gen Precision Lab Inc Microwave power divider
US2908813A (en) * 1956-11-28 1959-10-13 Emerson Radio & Phonograph Cor Phase and frequency modifying apparatus for electrical waves
US2921270A (en) * 1957-02-07 1960-01-12 Polarad Electronics Corp Extended frequency range signal generator control mechanism
US2996687A (en) * 1959-08-26 1961-08-15 Andersen Lab Inc Variable ultrasonic delay line
US3255456A (en) * 1963-03-08 1966-06-07 Hazeltine Research Inc H-plane reflex bend for a two layer pillbox antenna utilizing a plurality of holes to couple the layers
US3621481A (en) * 1970-05-01 1971-11-16 Raytheon Co Microwave energy phase shifter
FR2616014B1 (en) * 1987-05-26 1989-06-30 Cgr Mev IMPROVED DEVICE FOR COMBINING TWO ALTERNATIVE SIGNALS OF THE SAME FREQUENCY

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428485A (en) * 1943-06-30 1947-10-07 Rca Corp Impedance matching device
US2593120A (en) * 1945-03-08 1952-04-15 Us Sec War Wave guide transmission system
US2564030A (en) * 1945-12-10 1951-08-14 Edward M Purcell Phase shifting device
US2508573A (en) * 1946-04-30 1950-05-23 Us Sec War Ultra high frequency oscillator circuit
US2486818A (en) * 1946-08-30 1949-11-01 Hazeltine Research Inc Wave-signal directional coupler
US2568090A (en) * 1948-06-22 1951-09-18 Raytheon Mfg Co Balanced mixer

Also Published As

Publication number Publication date
NL153908B (en)
US2768356A (en) 1956-10-23
DE845659C (en) 1952-08-04
CH297631A (en) 1954-03-31
NL77472C (en)
FR1037905A (en) 1953-09-23
BE503660A (en)

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