System including spiral antenna and dipole or monopole antenna
US5457469A · kind A · utility
234Cited by
21References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1992 |
| Grant date | Oct 10, 1995 |
| Priority date | — |
| Expiry date | Jul 30, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/30
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A broadband antenna system includes a frequency-dependent antenna and a frequency-independent antenna rotatably coupled to the frequency-dependent antenna. The antenna system may be arranged such that a dipole or monopole antenna is rotatably coupled to the inner or outer termination points of a spiral antenna, which is, in turn, movably coupled to a base. When the dipole antenna is coupled to the outer termination points of the spiral antenna, the elements of the spiral antenna may be extended.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.