GB1457173A - Aerial - Google Patents
AerialInfo
- 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
- United Kingdom
- Prior art keywords
- inductor
- sheet
- aerial
- printed circuit
- capacitor
- 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
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
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/28—Conical, 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
Landscapes
- Filters And Equalizers (AREA)
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.
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 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)
| 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 |
-
1974
- 1974-01-30 GB GB427574A patent/GB1457173A/en not_active Expired
Cited By (11)
| 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 |