Wave reception apparatus for a motor vehicle
US5239302A · kind A · utility
14Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 4, 1992 |
| Grant date | Aug 24, 1993 |
| Priority date | — |
| Expiry date | Feb 4, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q1/1278
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A first inductance element is series-connected into a reception signal path of an antenna circuit between an antenna element and a receiver. A second inductance element is arranged to connect the antenna circuit to ground. These inductance elements series- and parallel-resonate with a ground stray capacitance of the antenna circuit including a feeder cable, so that reduction of gain of the reception system due to the stray capacitance is improved. A damping resistor is coupled to the second inductance element. The system has high reception sensitivity over a wide reception range with eliminating use of a pre-amplifier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.