Radar detector
US4698632A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1985 |
| Grant date | Oct 6, 1987 |
| Priority date | — |
| Expiry date | Jun 19, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/021
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A radar detector capable of discriminating a prescribed radar signal from other undesired radar or interference signals by mixing an incoming electromagnetic wave radar signal with a local signal whose frequency varies with time within a fixed range of frequency repeatedly at regular periods, thus providing a beat signal; temporarily stopping the frequency sweep in response to appearance of dc components alone in the beat signal when the incoming radar signal matches the local signal in frequency; and watching the length of time for which the incoming radar signal matches the local signal in frequency. The reception of the prescribed radar signal is indicated using a sound-generating unit such as a speaker or a light-emitting unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.