GB438326A - Improvements in loop antennae - Google Patents

Improvements in loop antennae

Info

Publication number
GB438326A
GB438326A GB12220/35A GB1222035A GB438326A GB 438326 A GB438326 A GB 438326A GB 12220/35 A GB12220/35 A GB 12220/35A GB 1222035 A GB1222035 A GB 1222035A GB 438326 A GB438326 A GB 438326A
Authority
GB
United Kingdom
Prior art keywords
interrupted
conductor
horizontal
length
aerial
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
GB12220/35A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB438326A publication Critical patent/GB438326A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01SRADIO 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
    • G01S3/00Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
    • G01S3/02Direction-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
    • G01S3/04Details
    • G01S3/08Means for reducing polarisation errors, e.g. by use of Adcock or spaced loop antenna systems
    • G01S3/085Means 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)
  • Near-Field Transmission Systems (AREA)

Abstract

438,326. Aerials. NAAMLOOZE VENNOOTSCHAP PHILIPS' GOLEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. April 23, 1935, No. 12220. Convention date, May 9, 1934. Drawings to Specification. [Class 40 (v)] A loop aerial, more particularly for a radio beacon transmitter, has a length which is great relative to its height the latter being small relative to the operating wavelength, and the conductor is interrupted at one or more symmetrically situated points by impedances such that radiation by the horizontal parts is substantially eliminated. In one embodiment the upper horizontal conductor is interrupted at the centre by a capacity the impedance Z of which is given by the formula Z = 2 j Ro tan. #l/# where Ro is the wave resistance of the aerial l is half the horizontal length and # the wavelength.
GB12220/35A 1934-05-09 1935-04-23 Improvements in loop antennae Expired GB438326A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL438326X 1934-05-09

Publications (1)

Publication Number Publication Date
GB438326A true GB438326A (en) 1935-11-14

Family

ID=19786217

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12220/35A Expired GB438326A (en) 1934-05-09 1935-04-23 Improvements in loop antennae

Country Status (3)

Country Link
FR (1) FR789403A (en)
GB (1) GB438326A (en)
NL (1) NL40848C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2166000A (en) * 1984-10-24 1986-04-23 Electronic Indentification Sys A system for transmission of high-frequency electromagnetic signals

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2166000A (en) * 1984-10-24 1986-04-23 Electronic Indentification Sys A system for transmission of high-frequency electromagnetic signals

Also Published As

Publication number Publication date
FR789403A (en) 1935-10-29
NL40848C (en)

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