GB773207A - Improvements relating to aerials, especially television aerials - Google Patents

Improvements relating to aerials, especially television aerials

Info

Publication number
GB773207A
GB773207A GB1938454A GB1938454A GB773207A GB 773207 A GB773207 A GB 773207A GB 1938454 A GB1938454 A GB 1938454A GB 1938454 A GB1938454 A GB 1938454A GB 773207 A GB773207 A GB 773207A
Authority
GB
United Kingdom
Prior art keywords
aerial
members
aerials
july
feeder
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
GB1938454A
Inventor
Edward Cecil Cork
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB1938454A priority Critical patent/GB773207A/en
Publication of GB773207A publication Critical patent/GB773207A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/528—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the re-radiation of a support structure

Abstract

773,207. Aerials. ELECTRIC & MUSICAL INDUSTRIES, Ltd. July 1, 1955 [July 2, 1954], No. 19384/54. Class 40(7) A high-frequency transmitting aerial arrangement comprises an electrically loaded aerial mounted within a supporting metal structure having openings for the passage of wave energy therethrough. The loading causes the aerial currents to have a phase velocity substantially different from that in the support structure so as to reduce the coupling which would otherwise occur between the aerial and the structure. As shown the aerial consists of two collinear loaded dipoles 6, 7, 1.5# long and fed from the transmitter by feeder 8. Feeder and dipoles may be supported in any suitable manner inside an equi - angular triangular - sectional structure consisting of vertical aluminium masts 1, 2, 3 and bracing members &c. 5. The distance between the members 1, 2 and 3 may be #/2 and between members 5 at least #/4. If the current phase velocity in the aerial is of the order of three times that in the members 1, 2 and 3 coupling between the aerial and these numbers is negligibly small. Specification 628,986 is referred to.
GB1938454A 1954-07-02 1954-07-02 Improvements relating to aerials, especially television aerials Expired GB773207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1938454A GB773207A (en) 1954-07-02 1954-07-02 Improvements relating to aerials, especially television aerials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1938454A GB773207A (en) 1954-07-02 1954-07-02 Improvements relating to aerials, especially television aerials

Publications (1)

Publication Number Publication Date
GB773207A true GB773207A (en) 1957-04-24

Family

ID=10128454

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1938454A Expired GB773207A (en) 1954-07-02 1954-07-02 Improvements relating to aerials, especially television aerials

Country Status (1)

Country Link
GB (1) GB773207A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1399988A1 (en) * 2001-06-27 2004-03-24 E.M.W. Antenna Co., Ltd Antenna for portable wireless communication apparatuses

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1399988A1 (en) * 2001-06-27 2004-03-24 E.M.W. Antenna Co., Ltd Antenna for portable wireless communication apparatuses
EP1399988A4 (en) * 2001-06-27 2005-01-26 Emw Antenna Co Ltd Antenna for portable wireless communication apparatuses

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