GB361996A - Improvements in and relating to wireless receiving and transmitting apparatus, specially applicable to direction finding - Google Patents

Improvements in and relating to wireless receiving and transmitting apparatus, specially applicable to direction finding

Info

Publication number
GB361996A
GB361996A GB2635930A GB2635930A GB361996A GB 361996 A GB361996 A GB 361996A GB 2635930 A GB2635930 A GB 2635930A GB 2635930 A GB2635930 A GB 2635930A GB 361996 A GB361996 A GB 361996A
Authority
GB
United Kingdom
Prior art keywords
frame
aerial
response
coupled
receiving circuit
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
GB2635930A
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.)
CECIL CRAMPTON
CECIL ERNEST HORTON
Original Assignee
CECIL CRAMPTON
CECIL ERNEST HORTON
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 CECIL CRAMPTON, CECIL ERNEST HORTON filed Critical CECIL CRAMPTON
Priority to GB2635930A priority Critical patent/GB361996A/en
Publication of GB361996A publication Critical patent/GB361996A/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
    • G01S3/04—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
    • 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
    • G01S3/12—Means for determining sense of direction, e.g. by combining signals from directional antenna or goniometer search coil with those from non-directional antenna

Abstract

361,996. Directive wireless signalling. MACKENZIE, W. B., HORTON, C. E., and CRAMPTON, C., H.M. Signal School, Royal Naval Barracks, Portsmouth. Sept. 3, 1930, No. 26359. [Class 40 (v).] In order to get a single clearly defined zero, indicating sense as well as direction, the figure-ofeight response from one frame aerial is combined in phase-quadrature with a subsidiary cardioid response preferably obtained by combining a second frame with a non-directional aerial, the axis of symmetry of the cardioid combination being located on one of the zero points of the first frame. As shown in Fig. 3, the frame Fl is coupled at L1 to the common receiving circuit L4. The smaller frame F2, at right-angles to the first, is coupled at L2, L3 to the output from an amplifier V connected to a non-directional aerial E, and the combined pick-up is fed to the common receiving circuit through a variable coupling L<1>2. The response of the frame F1 to a signal from D is shown in Fig. 4, whilst the cardioid response due to the combined aerials F2 and E is shown in Fig. 5. Fig. 6 shows the resultant curve G of the whole combination. The frame F2 may be replaced in a Bellini- Tosi aerial by a small coil placed at right-angles to the search coil and rotating with it. In a modified arrangement the frame F2 is coupled to the common receiving circuit through a pair of push-pull amplifiers. The arrangement can be used to transmit a directional field having only one zero. According to the Provisional Specification, the aerial E may be replaced by the open-aerial effect usually present in a frame aerial.
GB2635930A 1930-09-03 1930-09-03 Improvements in and relating to wireless receiving and transmitting apparatus, specially applicable to direction finding Expired GB361996A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2635930A GB361996A (en) 1930-09-03 1930-09-03 Improvements in and relating to wireless receiving and transmitting apparatus, specially applicable to direction finding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2635930A GB361996A (en) 1930-09-03 1930-09-03 Improvements in and relating to wireless receiving and transmitting apparatus, specially applicable to direction finding

Publications (1)

Publication Number Publication Date
GB361996A true GB361996A (en) 1931-12-03

Family

ID=10242425

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2635930A Expired GB361996A (en) 1930-09-03 1930-09-03 Improvements in and relating to wireless receiving and transmitting apparatus, specially applicable to direction finding

Country Status (1)

Country Link
GB (1) GB361996A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2543002A (en) * 1944-04-26 1951-02-27 Standard Telephones Cables Ltd Aircraft indicator system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2543002A (en) * 1944-04-26 1951-02-27 Standard Telephones Cables Ltd Aircraft indicator system

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