Radar detector with reduced emissions
US7388537B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2005 |
| Grant date | Jun 17, 2008 |
| Priority date | — |
| Expiry date | Nov 13, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01S7/022
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A radar detector includes features to reduce emissions such as those typically generated by the detector's local oscillator. Two low noise amplifiers (LNA's), operating in X band and a combined K/Ka band, respectively amplify X and K/Ka band signals from separate antennae, and deliver those signals over separate, elongated and narrow signal paths to X and K/Ka mixers, where those signals are mixed with local oscillator (LO) signals to produce IF for detection. The elongated, narrow signal paths from the antennae to the mixers reduce LO emissions, and those emissions are further reduced by incorporating radar absorbers between the circuit board and detector case along the antenna-mixer path, including radar absorptive paint on the circuit board itself along this path, and sealing the case with a conductive sealing gasket.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.