Electrical signal separating device for window antenna having isolating and matching circuitry
US4654669A · kind A · utility
10Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 20, 1983 |
| Grant date | Mar 31, 1987 |
| Priority date | — |
| Expiry date | Dec 20, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/38
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention provides within three particular aspects thereof an isolating and matching device operable to enable an electrically heatable window of a motor vehicle to be used as an efficient VHF communications aerial or antenna; wherein isolating and matching circuitry is provided for Series VHF Matching, Shunt VHF Matching and Split Passband Matching of an electrically heatable window heating element to an aerial input impedance of an aerial feeder circuit of a radio frequency receiver or transmit/receiver device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.