GB1457173A - Aerial - Google Patents

Aerial

Info

Publication number
GB1457173A
GB1457173A GB427574A GB427574A GB1457173A GB 1457173 A GB1457173 A GB 1457173A GB 427574 A GB427574 A GB 427574A GB 427574 A GB427574 A GB 427574A GB 1457173 A GB1457173 A GB 1457173A
Authority
GB
Grant status
Application
Patent type
Prior art keywords
circuit
sheet
inductor
aerial
printed
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
GB427574A
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.)
Pye Electronic Products Ltd
Original Assignee
Pye Electronic Products 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

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01QANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04Resonant antennas
    • H01Q9/16Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
    • H01Q9/28Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines

Abstract

1457173 Aerials PYE Ltd 30 Jan 1974 04275/74 Heading H4A An aerial comprises two opposed, spaced, electrically conductive surfaces 1, 2 between which an inductor 4 and a capacitor 5 are electrically connected in parallel to form a resonant circuit, the maximum dimension of each surface and the separation of the surfaces each being less than one quarter of the wavelength at the resonant frequency of the aerial, and the inductor being tapped at 9 for coupling R.F. energy to and from the aerial. As described, the two surfaces are flat, parallel and aligned sheets. The sheet 1 may be integral with, or extended from, the chassis 3 of a transmitter or receiver. Alternatively, it may be connected to an earth plane or conductor on a printed circuit board carrying radio components. The sheet 2 may be a metal plate or a piece of copper clad laminate as used for printed circuit boards. A capacitor 5 provides mechanical support for the sheet 2 and is variable by means of a screw 6. An inductor 4 is in the form of a hairpin-shaped length of wire, but may alternatively be provided as a conductive track on a printed circuit board. The inner conductor 7 of a coaxial cable 8 forming a feed to a radio circuit passes through an aperture in the sheet 1 and taps the inductor 4 at a point 9.
GB427574A 1974-01-30 1974-01-30 Aerial Expired GB1457173A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB427574A GB1457173A (en) 1974-01-30 1974-01-30 Aerial

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB427574A GB1457173A (en) 1974-01-30 1974-01-30 Aerial

Publications (1)

Publication Number Publication Date
GB1457173A true true GB1457173A (en) 1976-12-01

Family

ID=9774051

Family Applications (1)

Application Number Title Priority Date Filing Date
GB427574A Expired GB1457173A (en) 1974-01-30 1974-01-30 Aerial

Country Status (1)

Country Link
GB (1) GB1457173A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4101896A (en) * 1977-04-14 1978-07-18 The United States Of America As Represented By The Secretary Of The Army Camouflaged dual-slot antenna
US4259670A (en) * 1978-05-16 1981-03-31 Ball Corporation Broadband microstrip antenna with automatically progressively shortened resonant dimensions with respect to increasing frequency of operation
US4821040A (en) * 1986-12-23 1989-04-11 Ball Corporation Circular microstrip vehicular rf antenna
US4835541A (en) * 1986-12-29 1989-05-30 Ball Corporation Near-isotropic low-profile microstrip radiator especially suited for use as a mobile vehicle antenna
GB2217112A (en) * 1988-03-28 1989-10-18 Matsushita Electric Works Ltd Antenna and its electronic circuit combination
US5347291A (en) * 1991-12-05 1994-09-13 Moore Richard L Capacitive-type, electrically short, broadband antenna and coupling systems
GB2325090A (en) * 1997-05-09 1998-11-11 Motorola Inc Compact slot antenna

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4101896A (en) * 1977-04-14 1978-07-18 The United States Of America As Represented By The Secretary Of The Army Camouflaged dual-slot antenna
US4259670A (en) * 1978-05-16 1981-03-31 Ball Corporation Broadband microstrip antenna with automatically progressively shortened resonant dimensions with respect to increasing frequency of operation
US4821040A (en) * 1986-12-23 1989-04-11 Ball Corporation Circular microstrip vehicular rf antenna
US4835541A (en) * 1986-12-29 1989-05-30 Ball Corporation Near-isotropic low-profile microstrip radiator especially suited for use as a mobile vehicle antenna
GB2217112A (en) * 1988-03-28 1989-10-18 Matsushita Electric Works Ltd Antenna and its electronic circuit combination
US4924237A (en) * 1988-03-28 1990-05-08 Matsushita Electric Works, Ltd. Antenna and its electronic circuit combination
GB2217112B (en) * 1988-03-28 1992-07-01 Matsushita Electric Works Ltd Antenna and its electronic circuit combination
US5347291A (en) * 1991-12-05 1994-09-13 Moore Richard L Capacitive-type, electrically short, broadband antenna and coupling systems
GB2325090A (en) * 1997-05-09 1998-11-11 Motorola Inc Compact slot antenna
US5966101A (en) * 1997-05-09 1999-10-12 Motorola, Inc. Multi-layered compact slot antenna structure and method
GB2325090B (en) * 1997-05-09 2002-04-10 Motorola Inc Multi-layered compact slot antenna structure and method

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Legal Events

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