Planar antenna with ring-shaped radiation element of high ring ratio
US5371507A · kind A · utility
14Cited by
5References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1993 |
| Grant date | Dec 6, 1994 |
| Priority date | — |
| Expiry date | Aug 31, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/38
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A planar antenna comprised of a ground conductor, a dielectric layer laminated on the ground conductor, and a rectangular radiation element laminated on the dielectric layer on its surface opposing to the ground conductor, wherein a rectangular opening is concentrically formed through the radiation element so as to provide a ring radiation element and a feed point is disposed near a center of one side of the opening.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.