GB588159A - Improvements in directive antennas - Google Patents

Improvements in directive antennas

Info

Publication number
GB588159A
GB588159A GB1236/45A GB123645A GB588159A GB 588159 A GB588159 A GB 588159A GB 1236/45 A GB1236/45 A GB 1236/45A GB 123645 A GB123645 A GB 123645A GB 588159 A GB588159 A GB 588159A
Authority
GB
United Kingdom
Prior art keywords
antenna
wave
slots
guide
plane
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
GB1236/45A
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of GB588159A publication Critical patent/GB588159A/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
    • H01Q19/13—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 being a single radiating element, e.g. a dipole, a slot, a waveguide termination
    • H01Q19/134—Rear-feeds; Splash plate feeds
    • 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
    • G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
    • G01S1/02—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using radio waves

Landscapes

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

Abstract

588,159. Wave guides. WESTERN ELECTRIC CO., Inc. Jan. 15, 1945, No. 1236. Convention date, Jan. 15, 1944. [Class 40 (v)] A directive antenna comprises a wave guide connected to a translation device and provided with a pair of antenna apertures so spaced apart in a given plane and arranged that an approximately spherical wave front may be transmitted or received. Fig. 3 shows a form in which a transceiver 1 is connected by a wave guide 8 to a resonant chamber 16 tuned by a screw plug 23. Slots 18, 19 arranged in the focal plane of a paraboloidal reflector 2 have their length dimension perpendicular to the plane of the drawing, and in the magnetic plane of the wave in guide 8. The dimensions of the slots and their spacing are related to the operating wavelength so as to produce a spherical wave front, thus giving optimum reflection by reflector 2. The aperture of the reflector is chosen so as to reduce reflection of the secondary lobes. Figs. 7 and 8 show a preferred form for the resonant chamber which comprises a brass plate 25 carrying a tuning plug 43, a brass plate 26 which is apertured at 36 to form the resonant cavity, two half size brass plates 27, 28, rubber gaskets 29, 30, dielectric windows 31, 32 and brass cover-plates 33, 34, formed with antenna apertures 37, 38. In a modified form (Figs. 9 and 10, not shown), the resonant cavity is filled by an E-shaped member of polystyrene, the limbs of which project respectively into the end of the wave guide and from the antenna apertures. Fig. 12 shows a modification in which the guide 13 feeds into a chamber 61 tuned by piston 65, the antenna slots 64 being at the ends of divergent wave guide sections 62, 63. Fig. 21 shows an arrangement similar to that shown in Fig. 3 used for lobe switching. The antenna slots 18, 19 are adapted to be alternately detuned by' plungers 98, 99 operated simultaneously by coils 101, 103 under the control of a reversing switch 105 driven continuously by a motor 111.
GB1236/45A 1944-01-15 1945-01-15 Improvements in directive antennas Expired GB588159A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US262124XA 1944-01-15 1944-01-15

Publications (1)

Publication Number Publication Date
GB588159A true GB588159A (en) 1947-05-15

Family

ID=21830509

Family Applications (2)

Application Number Title Priority Date Filing Date
GB1236/45A Expired GB588159A (en) 1944-01-15 1945-01-15 Improvements in directive antennas
GB18704/45A Expired GB595893A (en) 1944-01-15 1945-07-20 Improvements in antenna systems

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB18704/45A Expired GB595893A (en) 1944-01-15 1945-07-20 Improvements in antenna systems

Country Status (6)

Country Link
AT (1) AT180304B (en)
CH (1) CH262124A (en)
ES (1) ES174350A1 (en)
FR (2) FR938595A (en)
GB (2) GB588159A (en)
NL (1) NL69072C (en)

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* Cited by examiner, † Cited by third party
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Also Published As

Publication number Publication date
FR938595A (en) 1948-10-19
AT180304B (en) 1954-11-25
CH262124A (en) 1949-06-15
ES174350A1 (en) 1946-09-01
NL69072C (en) 1951-12-15
GB595893A (en) 1947-12-19
FR55257E (en) 1952-01-09

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