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GB1472968A - Radio antenna incorporating low-loss high relative permittiv ity dielectric material - Google Patents

Radio antenna incorporating low-loss high relative permittiv ity dielectric material

Info

Publication number
GB1472968A
GB1472968A GB356875A GB356875A GB1472968A GB 1472968 A GB1472968 A GB 1472968A GB 356875 A GB356875 A GB 356875A GB 356875 A GB356875 A GB 356875A GB 1472968 A GB1472968 A GB 1472968A
Authority
GB
United Kingdom
Prior art keywords
dielectric
parts
adhesive
permittiv
ity
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
GB356875A
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.)
Plessey Co Ltd
Original Assignee
Plessey Co 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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB356875A priority Critical patent/GB1472968A/en
Priority to ZA00758053A priority patent/ZA758053B/en
Priority to DE19762601494 priority patent/DE2601494A1/en
Priority to FR7601663A priority patent/FR2299736A1/en
Priority to JP784776A priority patent/JPS5199955A/en
Publication of GB1472968A publication Critical patent/GB1472968A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/24—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave constituted by a dielectric or ferromagnetic rod or pipe
    • 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
    • H01Q19/06—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 refracting or diffracting devices, e.g. lens
    • H01Q19/09—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 refracting or diffracting devices, e.g. lens wherein the primary active element is coated with or embedded in a dielectric or magnetic material

Landscapes

  • Aerials With Secondary Devices (AREA)

Abstract

1472968 Aerials PLESSEY CO Ltd 23 Dec 1975 [28 Jan 1975 20 Feb 1975] 3568/75 and 7123/75 Heading H4A Antennae are made by securing together by adhesive two co-operating dielectric parts 1, 2 of relative permittivity of at least 25 and a loss factor of not more than 4% to sandwich conductive material therebetween free from adhesive at selected positions. The parts 1, 2 may be hollow plastics cases filled with powdered dielectric ceramic or may be of ceramic powder and consolidating agent that has been extruded, slip cast, isostatically pressed or moulded. A suitable ceramic is given in Specification 1,471,859. In Fig. 1, a Yagi array comprising conductive rods 3-6 is formed with moulded dielectric parts 1, 2 using an intermediary adhesive layer 7 of epoxy resin prepared as a stamped pre-form. In a modification (not shown) the conductive material may be deposited by thin or thick film, plasma spraying or electrodeless deposition techniques. In another embodiment (Fig. 3, not shown) the reflector 6 is replaced by a metallized disc surface (21) at the end of a dielectric stub cylinder (22). Other embodiments are a cone and cup (Fig. 4, not shown) a sheathed helix (Fig. 5, not shown), a reflex antenna in rectangular blocks (Fig. 6, not shown) and a Yagi array formed as a multilayered sandwich clamped in a housing (Figs. 7 and 8, not shown). The rods 3-6 may be of Cu or Al whereas deposits may be of Ag.
GB356875A 1975-01-28 1975-01-28 Radio antenna incorporating low-loss high relative permittiv ity dielectric material Expired GB1472968A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB356875A GB1472968A (en) 1975-01-28 1975-01-28 Radio antenna incorporating low-loss high relative permittiv ity dielectric material
ZA00758053A ZA758053B (en) 1975-01-28 1975-12-30 Radio antenna
DE19762601494 DE2601494A1 (en) 1975-01-28 1976-01-16 METHOD OF MANUFACTURING A RADIO ANTENNA
FR7601663A FR2299736A1 (en) 1975-01-28 1976-01-22 Radio antenna with conductor and insulator prodn - uses a cooperating dielectric parts whose respective surfaces are machined for conductor retention
JP784776A JPS5199955A (en) 1975-01-28 1976-01-27 MUSENANTENAOSAKUSEISURUHOHO

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB356875A GB1472968A (en) 1975-01-28 1975-01-28 Radio antenna incorporating low-loss high relative permittiv ity dielectric material

Publications (1)

Publication Number Publication Date
GB1472968A true GB1472968A (en) 1977-05-11

Family

ID=9760792

Family Applications (1)

Application Number Title Priority Date Filing Date
GB356875A Expired GB1472968A (en) 1975-01-28 1975-01-28 Radio antenna incorporating low-loss high relative permittiv ity dielectric material

Country Status (2)

Country Link
GB (1) GB1472968A (en)
ZA (1) ZA758053B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4443055A1 (en) * 1994-12-05 1996-06-20 Grieshaber Vega Kg Aerial unit for filling level radar gauge with HF emitter for radiating microwaves

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4443055A1 (en) * 1994-12-05 1996-06-20 Grieshaber Vega Kg Aerial unit for filling level radar gauge with HF emitter for radiating microwaves
DE4443055B4 (en) * 1994-12-05 2011-07-21 VEGA Grieshaber KG, 77709 Antenna device for a level-measuring radar device

Also Published As

Publication number Publication date
ZA758053B (en) 1976-12-29

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee