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GB706090A - Phase changing device for electric circuits - Google Patents

Phase changing device for electric circuits

Info

Publication number
GB706090A
GB706090A GB8190/46A GB819046A GB706090A GB 706090 A GB706090 A GB 706090A GB 8190/46 A GB8190/46 A GB 8190/46A GB 819046 A GB819046 A GB 819046A GB 706090 A GB706090 A GB 706090A
Authority
GB
United Kingdom
Prior art keywords
lines
circular
conductors
march
semi
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
GB8190/46A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB706090A publication Critical patent/GB706090A/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
    • H01P7/02—Lecher resonators
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
    • G01S3/14—Systems for determining direction or deviation from predetermined direction
    • G01S3/46—Systems for determining direction or deviation from predetermined direction using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/18—Phase-shifters
    • H01P1/184—Strip line phase-shifters

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Waveguide Switches, Polarizers, And Phase Shifters (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

706,090. Variable transmission lines. STANDARD TELEPHONES & CABLES, Ltd. March 15, 1946 [March 24, 1945], No. 8190/46. Addition to 685,990, [Group XL(c)]. Class 40 (8) For varying the electrical lengths of two transmission lines 17, 18 and 19, 20 in opposite senses, in radio direction-finding apparatus, two pairs of semi-circular dielectric discs 22 ... 25 are continuously rotated upon a shaft 26. Each pair of semi-circular dielectric discs 22 . . . 25 the like, embraces one leg such as 17, 19, of each transmission line, so that the lengths of the lines are simultaneously varied in opposite senses. In order that the surge impedance of the lines may not vary, a circular metallic disc having a thick half 28 and a thin half 29, Fig. 4, is mounted on the same shaft 26. The conductors 17 . . . 20 are so shaped, Fig. 2, that the phase delay varies sinusoidally when the disc rotates uniformly; or the conductors may be straight and the dielectric shaped.
GB8190/46A 1945-03-24 1946-03-15 Phase changing device for electric circuits Expired GB706090A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US706090XA 1945-03-24 1945-03-24

Publications (1)

Publication Number Publication Date
GB706090A true GB706090A (en) 1954-03-24

Family

ID=22096347

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8190/46A Expired GB706090A (en) 1945-03-24 1946-03-15 Phase changing device for electric circuits

Country Status (3)

Country Link
ES (1) ES172862A1 (en)
FR (1) FR924320A (en)
GB (1) GB706090A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2923006A (en) * 1955-03-17 1960-01-26 Csf Devices for the measurements of angular differences
WO1989007837A1 (en) * 1988-02-19 1989-08-24 Hughes Aircraft Company Dielectric loaded adjustable phase shifting apparatus
JPH03502840A (en) * 1988-12-23 1991-06-27 イーストマン・コダック・カンパニー camera

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2923006A (en) * 1955-03-17 1960-01-26 Csf Devices for the measurements of angular differences
WO1989007837A1 (en) * 1988-02-19 1989-08-24 Hughes Aircraft Company Dielectric loaded adjustable phase shifting apparatus
JPH03502840A (en) * 1988-12-23 1991-06-27 イーストマン・コダック・カンパニー camera

Also Published As

Publication number Publication date
FR924320A (en) 1947-08-01
ES172862A1 (en) 1946-05-01

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