GB1184468A - Improvements in Log-Periodic Antennae Installations - Google Patents

Improvements in Log-Periodic Antennae Installations

Info

Publication number
GB1184468A
GB1184468A GB4916667A GB4916667A GB1184468A GB 1184468 A GB1184468 A GB 1184468A GB 4916667 A GB4916667 A GB 4916667A GB 4916667 A GB4916667 A GB 4916667A GB 1184468 A GB1184468 A GB 1184468A
Authority
GB
United Kingdom
Prior art keywords
boom
aerial
supported
trolley
point
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
GB4916667A
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Publication of GB1184468A publication Critical patent/GB1184468A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
    • H01Q3/04—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
    • H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
    • H01Q11/10—Logperiodic antennas

Landscapes

  • Forklifts And Lifting Vehicles (AREA)

Abstract

1,184,468. Aerials. INTERNATIONAL STANDARD ELECTRIC CORP. 30 Oct., 1967 [1 Nov., 1966], No. 49166/67. Heading H4A. The boom AB of a horizontally polarized logperiodic aerial which, for example, consists of an array of dipoles is supported at a point X adjacent the centre of gravity on a vertical rotatable shaft housed in a mast M, the said boom being also rotatable about a horizontal axis through the point X. The lower end A of the boom, at the apex of the aerial, is supported on a trolley which may be moved on a circular track R, so enabling the aerial to be directed to any bearing. The end A of the boom may be raised or lowered as indicated by the arrows E, whereby the elevation angle of the radiation from the aerial may be adjusted according to frequency, in order to obtain optimum performance. In another embodiment (Fig. 2, not shown) a boom and aerial assembly is supported by a gimbal joint on top of a tower, so that a trolley and a track are not required.
GB4916667A 1966-11-01 1967-10-30 Improvements in Log-Periodic Antennae Installations Expired GB1184468A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AU13354/66A AU417569B2 (en) 1966-11-01 1966-11-01 Improvements in log-periodic antennae installations

Publications (1)

Publication Number Publication Date
GB1184468A true GB1184468A (en) 1970-03-18

Family

ID=3703698

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4916667A Expired GB1184468A (en) 1966-11-01 1967-10-30 Improvements in Log-Periodic Antennae Installations

Country Status (2)

Country Link
AU (1) AU417569B2 (en)
GB (1) GB1184468A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114256628A (en) * 2021-12-10 2022-03-29 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） Miniaturized short-wave soft oscillator log-periodic antenna

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114256628A (en) * 2021-12-10 2022-03-29 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） Miniaturized short-wave soft oscillator log-periodic antenna
CN114256628B (en) * 2021-12-10 2023-12-15 武汉船舶通信研究所（中国船舶重工集团公司第七二二研究所） Miniaturized short wave soft vibrator log periodic antenna

Also Published As

Publication number Publication date
AU417569B2 (en) 1971-09-28
AU1335466A (en) 1969-04-24

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees