GB250670A - Improvements in radio direction finders - Google Patents

Improvements in radio direction finders

Info

Publication number
GB250670A
GB250670A GB130125A GB130125A GB250670A GB 250670 A GB250670 A GB 250670A GB 130125 A GB130125 A GB 130125A GB 130125 A GB130125 A GB 130125A GB 250670 A GB250670 A GB 250670A
Authority
GB
United Kingdom
Prior art keywords
aerials
rings
aerial
radio direction
direction finders
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
GB130125A
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
Priority to GB130125A priority Critical patent/GB250670A/en
Publication of GB250670A publication Critical patent/GB250670A/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
    • 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
    • G01S3/085—Means for reducing polarisation errors, e.g. by use of Adcock or spaced loop antenna systems by using spaced loop aerial systems

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

250,670. Woods, F. Jan. 15, 1925. Directive signalling; aerials.-A direction finding aerial of the rotating coil or Bellini-Tosi type is surrounded by a plurality of rings 2 forming a closed circuit in one plane only which are directly earthed. The rings 2 may be mounted on insulators 3 carried by supports 4, or may be mounted on a container for the aerial. One or more auxiliary correcting aerials may also be provided and the coupling coil or coils associated therewith rotated in step with, but in the opposite direction to, the means whereby the intensity of the signal is varied. A correction circuit of the type described in Specification 239,263 may also be provided.
GB130125A 1925-01-15 1925-01-15 Improvements in radio direction finders Expired GB250670A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB130125A GB250670A (en) 1925-01-15 1925-01-15 Improvements in radio direction finders

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB130125A GB250670A (en) 1925-01-15 1925-01-15 Improvements in radio direction finders

Publications (1)

Publication Number Publication Date
GB250670A true GB250670A (en) 1926-04-15

Family

ID=9719595

Family Applications (1)

Application Number Title Priority Date Filing Date
GB130125A Expired GB250670A (en) 1925-01-15 1925-01-15 Improvements in radio direction finders

Country Status (1)

Country Link
GB (1) GB250670A (en)

Similar Documents

Publication Publication Date Title
CH262124A (en) Primary antenna.
CH258471A (en) Antenna.
CH303098A (en) Miniature frame receiving antenna with high inductance.
CH212945A (en) Radio receiver with loop antenna.
GB250670A (en) Improvements in radio direction finders
CH214746A (en) Antenna system for the emission of horizontally polarized waves with an approximately circular radiation characteristic.
CH277169A (en) Dipole antenna.
FR1149648A (en) Antenna without guy wire
GB347525A (en) Improvements in or relating to aerial systems
GB217668A (en) Improvements in and relating to apparatus for direction finding by wireless telegraphy
GB342060A (en) Improvements in or relating to aerial arrangements
FR1129221A (en) Circular polarized, axial radiating microwave antenna
GB294989A (en) Improvements in or relating to coupling devices, suitable for use with rotatable frame aerials and the like
AU590422A (en) Improvements in radio antenna systems
GB176381A (en) Improvements in radio antenna systems
AU2228025A (en) An improved directional radio receiving system
FR777876A (en) Radio antenna
GB538458A (en) Improvements in frame antennae
AU103615B2 (en) Mounting arrangements for antennae for radio direction finding apparatus
CA298349A (en) Directional antenna
FR738782A (en) Antenna for broadcast transmitters
CA281187A (en) Radio antenna
AU102942B2 (en) Directive wireless antennae
CA397413A (en) Radio loop antenna
CA516125A (en) Circularly polarized antenna arrangement for radar