Window glass antenna device
US5821904A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1996 |
| Grant date | Oct 13, 1998 |
| Priority date | — |
| Expiry date | Jun 28, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/1278
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A window glass antenna device disposed on an automobile window glass panel has a dedicated antenna disposed on the automobile window glass panel, a heater antenna comprising a defroster heater pattern disposed on the automobile window glass panel, and a feeder cable for transmitting received signals from the dedicated antenna and the heater antenna. An impedance transformer for effecting an impedance conversion between the dedicated antenna and the heater antenna, and the feeder cable has a primary winding having an end connected to the dedicated antenna, the primary winding having a tap connected to the heater antenna, and a secondary winding connected to the feeder cable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.