GB800466A - Improvements in or relating to very short wave directional aerial systems - Google Patents

Improvements in or relating to very short wave directional aerial systems

Info

Publication number
GB800466A
GB800466A GB2416556A GB2416556A GB800466A GB 800466 A GB800466 A GB 800466A GB 2416556 A GB2416556 A GB 2416556A GB 2416556 A GB2416556 A GB 2416556A GB 800466 A GB800466 A GB 800466A
Authority
GB
United Kingdom
Prior art keywords
edge
radiation
ring
reflector
directional 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
GB2416556A
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.)
Telefunken AG
Original Assignee
Telefunken AG
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 Telefunken AG filed Critical Telefunken AG
Publication of GB800466A publication Critical patent/GB800466A/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
    • H01Q19/02—Details
    • H01Q19/021—Means for reducing undesirable effects
    • H01Q19/022—Means for reducing undesirable effects for reducing the edge scattering of reflectors

Landscapes

  • Aerials With Secondary Devices (AREA)

Abstract

800,466. Aerials. TELEFUNKEN G.m.b.H. Aug. 7, 1956 [Aug. 23, 1955], No. 24165/56. Class 40 (7). A directional aerial system of the kind in which a primary radiator 2 illuminates a reflector 1 with an intensity which decreases towards the edge of the latter but where some energy is directed past the edge of the reflector is provided in the neighbourhood of the edge, and in the path of radiation past the edge, with a secondary radiator, such as the ring 4, arranged to reduce or eliminate rearwardly directed radiation lobes. The metal ring 4 is placed and dimensioned by trial and error so as to produce the best results and probably operates by the radiation of a phase opposed cancelling signal in the direction of the unwanted radiation. Further rings close to the first may be used. Other forms of secondary radiator may be used. For example only segments of a ring may be provided or one or more rings or ring segments of dielectric material may be attached to the edge of the reflector 1 or spaced a small distance therefrom. The system may be used for receiving as well as for transmitting.
GB2416556A 1955-08-23 1956-08-07 Improvements in or relating to very short wave directional aerial systems Expired GB800466A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET11306A DE1020065B (en) 1955-08-23 1955-08-23 Directional antenna

Publications (1)

Publication Number Publication Date
GB800466A true GB800466A (en) 1958-08-27

Family

ID=7546671

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2416556A Expired GB800466A (en) 1955-08-23 1956-08-07 Improvements in or relating to very short wave directional aerial systems

Country Status (2)

Country Link
DE (1) DE1020065B (en)
GB (1) GB800466A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3101473A (en) * 1960-04-14 1963-08-20 Mcdonnell Aircraft Corp Parabolic reflector with rim of absorbing material to attenuate side lobes
US3176301A (en) * 1963-02-14 1965-03-30 Richard S Wellons Plural horns at focus of parabolic reflector with shields to reduce spillover and side lobes
US3300268A (en) * 1962-03-22 1967-01-24 Straub Lothar Means for eliminating interfering diffraction effects originating at the edges of a mirror
US3314071A (en) * 1965-07-12 1967-04-11 Gen Dynamics Corp Device for control of antenna illumination tapers comprising a tapered surface of rf absorption material
US4233607A (en) * 1977-10-28 1980-11-11 Ball Corporation Apparatus and method for improving r.f. isolation between adjacent antennas

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3140491A (en) * 1963-01-24 1964-07-07 Boeing Co Diffraction shield consisting of notched ring which frames passive reflector

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3101473A (en) * 1960-04-14 1963-08-20 Mcdonnell Aircraft Corp Parabolic reflector with rim of absorbing material to attenuate side lobes
US3300268A (en) * 1962-03-22 1967-01-24 Straub Lothar Means for eliminating interfering diffraction effects originating at the edges of a mirror
US3176301A (en) * 1963-02-14 1965-03-30 Richard S Wellons Plural horns at focus of parabolic reflector with shields to reduce spillover and side lobes
US3314071A (en) * 1965-07-12 1967-04-11 Gen Dynamics Corp Device for control of antenna illumination tapers comprising a tapered surface of rf absorption material
US4233607A (en) * 1977-10-28 1980-11-11 Ball Corporation Apparatus and method for improving r.f. isolation between adjacent antennas

Also Published As

Publication number Publication date
DE1020065B (en) 1957-11-28

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