Twin coil antenna
US6529169B2 · kind B2 · utility
22Cited by
9References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 6, 2001 |
| Grant date | Mar 4, 2003 |
| Priority date | — |
| Expiry date | Jul 6, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q7/08
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A ferrite core antenna having two spaced signal pick-up coils coupled through a transformer so that the signals from the two coils are additively combined in the primary of the transformer. A variable capacitor connected to the two coils tunes the antenna to selected frequencies. This results in amplification of the signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.