Police radar signal detection circuitry for a police radar warning receiver
US4750215A · kind A · utility
42Cited by
53References
41Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 24, 1986 |
| Grant date | Jun 7, 1988 |
| Priority date | — |
| Expiry date | Jun 24, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/022
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A radar warning receiver is provided having a police radar signal detection circuit which generates evaluation signals, the state of which indicates the voltage level relative a threshold voltage of a discriminator output as the local oscillator is swept through the radar band. The times during which the evaluation signals are in one state or the other are utilized to identify whether the received signal is from a fixed frequency (e.g., police radar) source or a variable frequency source (e.g., spurious signals).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.