Quarter-wave quarter-wave retractable antenna
US6054958A · kind A · utility
9Cited by
4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 1997 |
| Grant date | Apr 25, 2000 |
| Priority date | — |
| Expiry date | Sep 10, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/244
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Retractable antennas with quarter wave-quarter wave resonances for telephones, and which are particularly suitable for radiotelephones, include a retractable antenna with a top load element, a spatially separated rod element, and a cylindrical support conductor positioned therebetween. The cylindrical support conductor is structurally configured to receive a portion of the rod therein to add structural rigidity to the antenna and to define a coaxial capacitor between the rod and the conductor when the antenna is in the extended position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.