Flat wide-band antenna
US4804965A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 1, 1986 |
| Grant date | Feb 14, 1989 |
| Priority date | — |
| Expiry date | Jul 1, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/24
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna for receiving or transmitting electromagnetic waves with circular polarization or, in certain configurations, linear polarization. The antenna element is low-cost, wide-band and medium-gain broadside antenna element which may be used alone or in arrays. One embodiment disclosed comprises a wire or micro-strip conductor outlining a cruciform shaped loop parallel to a conductive plane from which it is separated by a dielectric layer. The lengths and widths of the branches of the cruciform loop are chosen to be .lambda.g/2 and .lambda.g/N respectively, where .lambda.g is the guide wavelength of the radiative transmission line formed by the conductor and plane. The antenna element is applicable to mobile earth-bound terminals for selective communications, for example.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.