Radio with antenna connector having high and low impedance points
US5659889A · kind A · utility
35Cited by
3References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 4, 1995 |
| Grant date | Aug 19, 1997 |
| Priority date | — |
| Expiry date | Jan 4, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S439/916
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A radio transceiver of the present invention includes a transmission line within a housing. The transmission line is comprised of a hollow center conductor and an outer conductor, both connected to a transceiver circuit. The transmission line is also connected to a low impedance connector which is coupled to the housing. A retractable 1/2 wave antenna having an integral matching section will be matched to a transceiver circuit when extended. When the antenna is retracted, the antenna is retracted within the center conductor and acts as a 1/4 wave antenna and will still be matched to the transceiver circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.