A passive microwave receiver, receiving a WARC protected frequency of 1420 MHz may be used for fire, temperature speed detection and intrusion detection. One or more receiver arrays can be used to provide a plurality of frequency ranges that can be detected. In an interior installation, one or more receiver...http://www.google.fr/patents/US20100079282?utm_source=gb-gplus-shareBrevet US20100079282 - PASSIVE MICROWAVE SPEED AND INTRUSION DETECTION SYSTEM
PASSIVE MICROWAVE SPEED AND INTRUSION DETECTION SYSTEM
Numéro de demande: 12/575,320 Numéro de publication: US 2010/0079282 A1 Date de dépôt: 7 oct. 2009 Brevet délivré: US8044798 ( Date de délivrance 25 oct. 2011)
