GB491127A - Improvements in or relating to radio direction finders - Google Patents

Improvements in or relating to radio direction finders

Info

Publication number
GB491127A
GB491127A GB29664/37A GB2966437A GB491127A GB 491127 A GB491127 A GB 491127A GB 29664/37 A GB29664/37 A GB 29664/37A GB 2966437 A GB2966437 A GB 2966437A GB 491127 A GB491127 A GB 491127A
Authority
GB
United Kingdom
Prior art keywords
aerials
opposition
oct
pairs
horizontal
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
GB29664/37A
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Publication of GB491127A publication Critical patent/GB491127A/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
    • G01S3/08—Means for reducing polarisation errors, e.g. by use of Adcock or spaced loop antenna systems

Abstract

491,127. Directive wireless signalling. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. Oct. 29, 1937, No. 29664. Convention date, Oct. 29, 1936. [Class 40 (v)] Relates to means for eliminating false " zeros " in a direction-finding system of the kind in which two or more pairs of aerials are arranged in opposition, for the purpose of avoiding " night effect." According to the invention the aerials are all set in the same horizontal plane, so that they can only rotate as a whole. Preferably they are located at a height of at least one-twentieth the working wavelength above ground. The Figure shows a plane of two pairs of horizontal aerials, F1 being coupled in opposition to F3, and F2 in opposition to F4, to a central radiogoniometer G. The individual frames have substantially no directional effect in azimuth and this reduces the usual four-fold ambiguity of double-frame arrangements to a two-fold ambiguity. An auxiliary frame or horizontal linear aerial can be added to give a unilateral or non-ambiguous response.
GB29664/37A 1936-10-29 1937-10-29 Improvements in or relating to radio direction finders Expired GB491127A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE491127X 1936-10-29

Publications (1)

Publication Number Publication Date
GB491127A true GB491127A (en) 1938-08-26

Family

ID=6544229

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29664/37A Expired GB491127A (en) 1936-10-29 1937-10-29 Improvements in or relating to radio direction finders

Country Status (2)

Country Link
GB (1) GB491127A (en)
NL (1) NL50719C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2576150A (en) * 1946-10-08 1951-11-27 Clifford M Simpson Directive antenna system
US2644158A (en) * 1946-11-06 1953-06-30 Sterling R Thrift Directive antenna system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2576150A (en) * 1946-10-08 1951-11-27 Clifford M Simpson Directive antenna system
US2644158A (en) * 1946-11-06 1953-06-30 Sterling R Thrift Directive antenna system

Also Published As

Publication number Publication date
NL50719C (en)

Similar Documents

Publication Publication Date Title
GB467785A (en) Improvements in or relating to direction finding radio receiver systems
GB491127A (en) Improvements in or relating to radio direction finders
GB446619A (en) Improvements in or relating to wireless directional aerial systems
GB519350A (en) Directional radio antenna arrays
GB506630A (en) Improvements in or relating to directional radio receiver systems
GB470165A (en) Improvements in or relating to navigation aiding radio transmitters
GB444005A (en) Directional radio receiving arrangements particularly for use with ultra-short waves
GB347525A (en) Improvements in or relating to aerial systems
GB464075A (en) Improvements in or relating to radio directional receiving systems
GB479330A (en) Improvements in or relating to directional wireless antennae
GB498344A (en) Improvements in or relating to wireless short wave directional systems
GB434637A (en) Improvements in or relating to radio transmitters
GB445976A (en) Aeroplane landing systems employing electromagnetic waves
GB462843A (en) Improvements in short-wave transmitters for aerial and marine navigation
GB479936A (en) Improvements in or relating to thermionic valve amplifiers
GB441964A (en) Improvements in or relating to radio direction finding systems
GB502972A (en) Improvements in directional aerial systems
FR826924A (en) Antenna arrays applicable in particular in mobile radio guidance systems
GB250670A (en) Improvements in radio direction finders
GB526036A (en) Improvements in or relating to radio direction finders
GB940353A (en) Improvements in or relating to directional antennae
GB463052A (en) Improvements in wireless direction-finding systems
GB452290A (en) Improvements in and relating to radio direction finding
GB501106A (en) Improvements in radio signalling systems
GB582755A (en) Improvements in or relating to arrangements of aerials for radio-beacons