GB1182952A - Series Tuned Transmission Line Antenna. - Google Patents

Series Tuned Transmission Line Antenna.

Info

Publication number
GB1182952A
GB1182952A GB32043/67A GB3204367A GB1182952A GB 1182952 A GB1182952 A GB 1182952A GB 32043/67 A GB32043/67 A GB 32043/67A GB 3204367 A GB3204367 A GB 3204367A GB 1182952 A GB1182952 A GB 1182952A
Authority
GB
United Kingdom
Prior art keywords
ground plane
capacitors
post member
panel
fibre
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
GB32043/67A
Inventor
Robert Dean Wanselow
Dale Wesley Milligan
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.)
Northrop Grumman Corp
Original Assignee
Northrop Grumman 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 Northrop Grumman Corp filed Critical Northrop Grumman Corp
Publication of GB1182952A publication Critical patent/GB1182952A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/06—Details
    • H01Q9/14—Length of element or elements adjustable
    • H01Q9/145—Length of element or elements adjustable by varying the electrical length
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/32—Vertical arrangement of element
    • H01Q9/36—Vertical arrangement of element with top loading

Abstract

1,182,952. Aerials. NORTHROP CORP. 12 July, 1967 [13 July, 1966], No. 32043/67. Heading H4A. An aerial comprises a radiating post member 1, Fig. 1, from the end of which a top-load member 4 extends at right angles, and one or more variable capacitors C a , Cb, C c which are connected in series within the said top-load member. As described, the post member 1 is connected at its other end to a ground plane 2 and is fed from a coaxial cable, the inner conductor 5 being connected to a suitable point on the post member for impedance matching, and the outer conductor 6 being connected to the ground plane. In an embodiment which is suitable for use on an aircraft or like vehicle, two fibre-glass brackets 9, Fig. 4, carrying a fibre-glass support panel 10, are mounted on a ground plane member 2a made, for example, of aluminium honeycomb material and bonded to the metal structure of the vehicle. A generally rectangular spiral top-load member 4b of metal tubing is mounted on the upper side of the panel 10 and its inner end is bent down to form a radiating post member 1a, which is connected to the ground plane 2a. The member 4b is broken at three selected positions to accommodate metal hangers 11 carrying variable capacitors, only that designated C2 being shown in Fig. 4, for clarity. The capacitors are mounted below and as near as possible to the panel 10, and each carries a pulley 12 by means of which its capacitance may be varied. A servo-motor 17 is mounted on the ground plane 2a and is coupled via an intermediate shaft 14 to all the capacitors. A feed wire 5a from a co-axial cable connector 23 on the ground plane has a terminal lug 20 which is fastened to the post member 1a by a bolt 21. A plastics cover 24 covers the whole assembly and is attached to the edges of the ground plane 2a. The aerial is stated to be operable over a wide band of frequencies, being resonant at two or more frequencies for each combination of settings of the three tuning capacitors. By employing a reflectometer or error detection phase discriminator circuit and a servo system, the ganged capacitors may be automatically tuned to a desired frequency.
GB32043/67A 1966-07-13 1967-07-12 Series Tuned Transmission Line Antenna. Expired GB1182952A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US56495966A 1966-07-13 1966-07-13

Publications (1)

Publication Number Publication Date
GB1182952A true GB1182952A (en) 1970-03-04

Family

ID=24256617

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32043/67A Expired GB1182952A (en) 1966-07-13 1967-07-12 Series Tuned Transmission Line Antenna.

Country Status (3)

Country Link
US (1) US3427624A (en)
DE (1) DE1541521A1 (en)
GB (1) GB1182952A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4518968A (en) * 1981-09-10 1985-05-21 National Research Development Corporation Dipole and ground plane antennas with improved terminations for coaxial feeders
US4630061A (en) * 1983-06-17 1986-12-16 National Research Development Corp. Antenna with unbalanced feed
GB2291272B (en) * 1994-05-26 1998-11-11 Schlumberger Ind Ltd Radio antennae

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3623161A (en) * 1967-09-26 1971-11-23 Matsushita Electric Ind Co Ltd Fractional wavelength folded antenna mounted on portable radio
US3568206A (en) * 1968-02-15 1971-03-02 Northrop Corp Transmission line loaded annular slot antenna
US3838429A (en) * 1973-08-03 1974-09-24 Us Army Miniaturized transmission line top loaded monopole antenna
US3946397A (en) * 1974-12-16 1976-03-23 Motorola, Inc. Inductor or antenna arrangement with integral series resonating capacitors
US4862181A (en) * 1986-10-31 1989-08-29 Motorola, Inc. Miniature integral antenna-radio apparatus
BG45028A1 (en) * 1987-03-12 1989-03-15 Mircho S Tabakov
US5181044A (en) * 1989-11-15 1993-01-19 Matsushita Electric Works, Ltd. Top loaded antenna
EP0777920B1 (en) * 1994-08-26 1998-09-16 Westinghouse Electric Corporation Nonsquinting end-fed quadrifilar helical antenna
DE10163793A1 (en) * 2001-02-23 2002-09-05 Heinz Lindenmeier Antenna for mobile satellite communication in vehicle, has positions of impedance connection point, antenna connection point, impedance coupled to impedance connection point selected to satisfy predetermined condition
US6642902B2 (en) 2002-04-08 2003-11-04 Kenneth A. Hirschberg Low loss loading, compact antenna and antenna loading method
JP2005210564A (en) 2004-01-26 2005-08-04 Alps Electric Co Ltd Antenna device
JP2006135899A (en) * 2004-11-09 2006-05-25 Alps Electric Co Ltd Antenna system
EP1826874A1 (en) * 2006-02-27 2007-08-29 Alps Electric Co., Ltd. Antenna device having enhanced reception sensitivity in wide bands

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2166750A (en) * 1936-02-15 1939-07-18 Rca Corp Antenna
NL64189C (en) * 1939-04-26
US2417793A (en) * 1944-08-01 1947-03-18 Rca Corp Antenna
US2431124A (en) * 1946-02-20 1947-11-18 Electronics Res Inc Antenna
US2578154A (en) * 1949-09-03 1951-12-11 Collins Radio Co Radiant energy antenna
US2850732A (en) * 1955-10-03 1958-09-02 Itt Antenna for mobile communications
US3151289A (en) * 1962-05-02 1964-09-29 Gen Electric Switching control for maintaining the current within predetermined levels
US3358286A (en) * 1964-08-13 1967-12-12 Eggud Electronics Inc Small cylindrical stub antenna with loading capacitance

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4518968A (en) * 1981-09-10 1985-05-21 National Research Development Corporation Dipole and ground plane antennas with improved terminations for coaxial feeders
US4630061A (en) * 1983-06-17 1986-12-16 National Research Development Corp. Antenna with unbalanced feed
GB2291272B (en) * 1994-05-26 1998-11-11 Schlumberger Ind Ltd Radio antennae

Also Published As

Publication number Publication date
DE1541521A1 (en) 1969-08-07
US3427624A (en) 1969-02-11

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees