GB873270A - Improvements in or relating to aerials - Google Patents

Improvements in or relating to aerials

Info

Publication number
GB873270A
GB873270A GB2734758A GB2734758A GB873270A GB 873270 A GB873270 A GB 873270A GB 2734758 A GB2734758 A GB 2734758A GB 2734758 A GB2734758 A GB 2734758A GB 873270 A GB873270 A GB 873270A
Authority
GB
United Kingdom
Prior art keywords
aerial
travelling
members
wave
resonant
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
GB2734758A
Inventor
John Roy Killeen
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.)
LABGEAR Ltd
Original Assignee
LABGEAR Ltd
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 LABGEAR Ltd filed Critical LABGEAR Ltd
Priority to GB2734758A priority Critical patent/GB873270A/en
Priority to ES0251643A priority patent/ES251643A1/en
Publication of GB873270A publication Critical patent/GB873270A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/44—Resonant antennas with a plurality of divergent straight elements, e.g. V-dipole, X-antenna; with a plurality of elements having mutually inclined substantially straight portions

Landscapes

  • Aerials With Secondary Devices (AREA)
  • Support Of Aerials (AREA)
  • Elimination Of Static Electricity (AREA)

Abstract

873,270. Aerials. LABGEAR Ltd. Aug. 18, 1959 [Aug. 26, 1958], No. 27347/58. Class 40(7) A wide-band aerial is designed to operate as a travelling-wave aerial for signals of a wavelength not greater than the length of either of the two members forming its radiating elements. These members are arranged in V formation and they are so dimensioned, and the angle between them so chosen, that when functioning in travelling- wave mode the characteristic impedance between their outer (spaced apart) ends is substantially that of free space. The members are supported, and a feeder connected to them, in an insulator at the apex of the V. In an embodiment intended for operation over a range of 40 to 220 megacycles/sec. travelling-wave operation in accordance with the invention takes place over the upper part of the frequency range. The angle between the members 1 is made 90 degrees and they are supported in an insulator 2 and extend to a length of 6 feet 2 inches. It is stated that the ratio between the length and diameter of the members should be of the order of 20:1 but in order to avoid the use of large diameter tubes it is preferred to use two half-inch tubes for each element. These are arranged fan-wise as shown with a maximum separation of thirteen inches. Shorting clamps 3 connect the tubes forming each member. The wide-band width given to the aerial when functioning in resonant or semi-resonant manner by the fan arranged elements is stated to enable signals to be handled from the frequency at which the aerial resonates as a half-wave dipole up to frequencies of travelling-wave operation. The aerial is substantially unidirectional in travelling-wave mode but requires a reflector to make it unidirectional in resonant mode. The reflector may either be a straight element or one constructed in similar manner to the aerial (Figs. 2 and 3, not shown).
GB2734758A 1958-08-26 1958-08-26 Improvements in or relating to aerials Expired GB873270A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2734758A GB873270A (en) 1958-08-26 1958-08-26 Improvements in or relating to aerials
ES0251643A ES251643A1 (en) 1958-08-26 1959-08-20 Improvements in or relating to aerials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2734758A GB873270A (en) 1958-08-26 1958-08-26 Improvements in or relating to aerials

Publications (1)

Publication Number Publication Date
GB873270A true GB873270A (en) 1961-07-19

Family

ID=10258115

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2734758A Expired GB873270A (en) 1958-08-26 1958-08-26 Improvements in or relating to aerials

Country Status (2)

Country Link
ES (1) ES251643A1 (en)
GB (1) GB873270A (en)

Also Published As

Publication number Publication date
ES251643A1 (en) 1960-03-16

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