Antenna with R-card ground plane
US5694136A · kind A · utility
23Cited by
14References
31Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 13, 1996 |
| Grant date | Dec 2, 1997 |
| Priority date | — |
| Expiry date | Mar 13, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/0407
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna structure has a radiating element and a ground plane. The ground plane has a central region relatively closely spaced apart from the radiating element and a peripheral region extending away from the central region. At least the peripheral region of the ground plane has a sheet resistivity that increases as radial distance from the central region increases. Though physically small, the ground plane simulates an infinite ground plane, and the antenna structure reduces multipath signals caused by reflection from the earth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.