GB770762A - Radio direction finder - Google Patents

Radio direction finder

Info

Publication number
GB770762A
GB770762A GB21964/52A GB2196452A GB770762A GB 770762 A GB770762 A GB 770762A GB 21964/52 A GB21964/52 A GB 21964/52A GB 2196452 A GB2196452 A GB 2196452A GB 770762 A GB770762 A GB 770762A
Authority
GB
United Kingdom
Prior art keywords
coils
coupling
formers
receiver
coupled
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
GB21964/52A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB770762A publication Critical patent/GB770762A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01S3/38—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal
    • G01S3/42—Systems for determining direction or deviation from predetermined direction using adjustment of real or effective orientation of directivity characteristic of an antenna or an antenna system to give a desired condition of signal derived from that antenna or antenna system, e.g. to give a maximum or minimum signal the desired condition being maintained automatically
    • 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
    • G01S3/04—Details
    • G01S3/06—Means for increasing effective directivity, e.g. by combining signals having differently oriented directivity characteristics or by sharpening the envelope waveform of the signal derived from a rotating or oscillating beam antenna
    • G01S3/065—Means for increasing effective directivity, e.g. by combining signals having differently oriented directivity characteristics or by sharpening the envelope waveform of the signal derived from a rotating or oscillating beam antenna by using non-directional aerial

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Details Of Television Systems (AREA)

Abstract

770,762. Transformers. KRUESI, G. G. Sept. 1, 1952 [Aug. 31, 1951], No. 21964/52. Class 38 (2). [Also in Group XL (c)] A radio-frequency variable transformer comprises two coaxial cylindrical formers 10 and 10a, the former 10 having a hollow portion which surrounds a portion of former 10a. Coils 11 and 12 are wound obliquely on the overlapping portions of formers 10 and 10a respectively and series-connected coils 131, 13<SP>11</SP> are wound normally on the non-overlapping portions of formers 10 and 10a respectively such that relative rotation of the formers varies the coupling between coils 11 and 12, the coupling between each of the coils 11, 12 with the coils 131, 13<SP>11</SP> remaining constant. The transformer is used in a radio direction-finder (see Group XL (c)) for coupling two aerials to a receiver. In one embodiment, Fig. 5 (not shown), the aerials are coupled respectively to coils 11 and 12 and the receiver is completed across coils 13, the coupling between coils 11 and 12 being adjusted by relative rotation of the formers 10, 10a to balance out unwanted coupling between the aerial circuits. In another embodiment, Fig. 6 (not shown), the aerials are coupled respectively to coils 12 and 13 and the receiver is coupled to coil 11, the transformer being adjusted to neutralize unwanted coupling between the receiver and the aerial coupled to coil 12.
GB21964/52A 1951-08-31 1952-09-01 Radio direction finder Expired GB770762A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH770762X 1951-08-31

Publications (1)

Publication Number Publication Date
GB770762A true GB770762A (en) 1957-03-27

Family

ID=4535370

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21964/52A Expired GB770762A (en) 1951-08-31 1952-09-01 Radio direction finder

Country Status (1)

Country Link
GB (1) GB770762A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115189705A (en) * 2022-09-09 2022-10-14 北京智芯微电子科技有限公司 Method for determining wireless receiving parameter, dual-mode communication method and system thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115189705A (en) * 2022-09-09 2022-10-14 北京智芯微电子科技有限公司 Method for determining wireless receiving parameter, dual-mode communication method and system thereof
CN115189705B (en) * 2022-09-09 2022-11-11 北京智芯微电子科技有限公司 Method for determining wireless receiving parameter, dual-mode communication method and system thereof

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