Means for tuning an antenna
US4958163A · kind A · utility
10Cited by
6References
7Claims
0Family size
Assignees
Inventor
Key dates
| Filing date | Feb 1, 1989 |
| Grant date | Sep 18, 1990 |
| Priority date | — |
| Expiry date | Feb 1, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q23/00
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna comprising a radiating element, a tuning coil having a rod located coaxially within the coil and positionable along the longitudinal axis of the tuning coil, the rod having a wiper attached which urges against the internal surface of the coil and means for positioning the rod such that with the coil connected to a radiating element and the wiper connected to a radio frequency transceiver, tuning of the antenna can be effected by control of the positioning means to adjust the position of the wiper along the tuning coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.