Multiband radar detector having plural local oscillators

Details Multiband radar detector having plural local oscillators Multiband radar detector having plural local oscillators

G - Physics

01

S

343/12

G01S 7/285 (2006.01) G01S 7/02 (2006.01)

Patent

CA 1295714

MULTIBAND RADAR DETECTOR HAVING PLURAL LOCAL OSCILLATORS ABSTRACT OF THE DISCLOSURE: The invention concerns radar detection devices sensitive to signals from various different frequency bands. A broad band antenna is provided, together with a mixer and a plurality of local oscillators. Signals from the local oscillators are mixed one at a time with signals from the antenna, there being one local oscillator signal for each radar frequency or pair of frequencies of interest wich may be received by the antenna. Each local oscillator signal is chosen so that when it is mixed with the respective radar frequency signal, an intermediate signal is produced which is the same for all mixtures. This intermediate signal is further down converted and fed to signal processing circuitry to produce an alarm when radar frequencies of interest are detected. P12082-71

555193

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