Antenna for portable radio communication apparatus
US5455595A · kind A · utility
15Cited by
4References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1994 |
| Grant date | Oct 3, 1995 |
| Priority date | — |
| Expiry date | Jan 26, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/243
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An antenna mounted on and retractable into a casing of a portable radio communication apparatus. When the antenna is pulled out of the casing, it plays the role of a .lambda./2 whip antenna. Even when the antenna is retracted into the casing, it has substantially the same gain as when pulled out from the casing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.