Vehicle antenna system
US4823141A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1986 |
| Grant date | Apr 18, 1989 |
| Priority date | — |
| Expiry date | Aug 6, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q7/00
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention provides a vehicle antenna system for detecting broadcast waves received by the vehicle body and then transmitting detected signals to various onboard receivers. The vehicle antenna system includes a loop antenna longitudinally disposed in close proximity to a marginal edge on the vehicle body to detect high frequency surface currents induced on the vehicle body by broadcast waves, the loop antenna being connected in series with a capacitor to form a series resonance circuit for causing a resonation with frequencies belonging to an increased range of bands and particularly to FM or higher frequency bands to provide an improved sensitivity on reception.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.