GB647417A - Directive antenna system - Google Patents

Directive antenna system

Info

Publication number
GB647417A
GB647417A GB3543/48A GB354348A GB647417A GB 647417 A GB647417 A GB 647417A GB 3543/48 A GB3543/48 A GB 3543/48A GB 354348 A GB354348 A GB 354348A GB 647417 A GB647417 A GB 647417A
Authority
GB
United Kingdom
Prior art keywords
array
pattern
dipole
strap
reflector
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
GB3543/48A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB647417A publication Critical patent/GB647417A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
    • H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
    • H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
    • H01Q19/17—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source comprising two or more radiating elements
    • H01Q19/175—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave the primary radiating source comprising two or more radiating elements arrayed along the focal line of a cylindrical focusing surface

Landscapes

  • Aerials With Secondary Devices (AREA)
  • Waveguide Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

647,417. Aerials. STANDARD TELEPHONES & CABLES, Ltd. Feb. 6, 1948, No. 3543. Convention date, Sept. 11, 1946. [Class 40 (vii)] A directive antenna system comprises a plurality of radiating elements such as the horizontal dipoles 2 and, for the purpose of adjusting the directive pattern, shielding means substantially a half-wavelength long in the direction of polarization are adjustably disposed adjacent certain of the radiating elements. The array may be located in front of a reflector 4 and it is stated that the normal procedure for adjusting the pattern is to insert a metal shield 5 between a certain radiator and the reflector to test the effect of eliminating the radiation from that dipole. If the pattern is improved the array is dismantled and the dipole adjusted to receive less energy. According to the present invention a cover 6 of resin-impregnated canvas is provided for the array and its wave-guide feed and a strap 7 of conductive material half a wavelength long in the direction of polarization of the radiation is slid up and down the cover, as shown, to locate the undesired dipoles. The strap which may be aluminium foil may then be taped over and covered with varnish so that it becomes a permanent part of the system. Several straps may be used if required.
GB3543/48A 1946-09-11 1948-02-06 Directive antenna system Expired GB647417A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US696118A US2480143A (en) 1946-09-11 1946-09-11 Directive antenna system

Publications (1)

Publication Number Publication Date
GB647417A true GB647417A (en) 1950-12-13

Family

ID=24795772

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3543/48A Expired GB647417A (en) 1946-09-11 1948-02-06 Directive antenna system

Country Status (3)

Country Link
US (1) US2480143A (en)
ES (1) ES182132A1 (en)
GB (1) GB647417A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3242496A (en) * 1948-08-06 1966-03-22 Sperry Rand Corp Scanning antenna system
US2709252A (en) * 1948-08-20 1955-05-24 Gilfillan Bros Inc Multi-plane tracking in ground controlled approach system
US5666125A (en) * 1993-03-17 1997-09-09 Luxon; Norval N. Radiation shielding and range extending antenna assembly
US5373304A (en) * 1993-05-27 1994-12-13 Nolan; James F. Cellular phone antenna reflector
US6095820A (en) * 1995-10-27 2000-08-01 Rangestar International Corporation Radiation shielding and range extending antenna assembly
US6078298A (en) * 1998-10-26 2000-06-20 Terk Technologies Corporation Di-pole wide bandwidth antenna
US6489926B2 (en) * 2001-02-13 2002-12-03 Gary A Jarvis Antenna for hand-held communications devices to reduce exposure to electromagnetic radiation

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE678010C (en) * 1932-12-07 1939-06-24 Julius Pintsch Kom Ges Rotatable arrangement for direction finding by means of ultra-short electric waves of centimeter and decimeter length
US2112282A (en) * 1934-09-03 1938-03-29 Telefunken Gmbh Ultrashort wave antenna system
BE472233A (en) * 1939-07-26
GB545936A (en) * 1939-08-24 1942-06-18 Univ Leland Stanford Junior Improvements in or relating to apparatus for diverting or segregating wave signals of selected, predetermined frequencies from a main wave guide carrying a plurality of high frequency waves
US2342721A (en) * 1940-01-20 1944-02-29 Boerner Rudolf Parabolic reflector
US2369808A (en) * 1940-06-08 1945-02-20 American Telephone & Telegraph Short-wave radio transmission
US2407057A (en) * 1942-01-23 1946-09-03 Rca Corp Antenna system
US2368663A (en) * 1943-05-15 1945-02-06 Standard Telephones Cables Ltd Broad band antenna

Also Published As

Publication number Publication date
US2480143A (en) 1949-08-30
ES182132A1 (en) 1948-04-01

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