专利汇可以提供Motion detection system with split-ring monostatic doppler detection专利检索,专利查询,专利分析的服务。并且A motion detection system wherein an RF transmitter is connected through a split-ring doppler detector to a transmit/receive antenna. Both the RF transmitter and the antenna are connected to nodes on the split-ring detector to provide a matched and balanced system. Diode detectors are connected, in opposite directions, to the ring detector at points between the transmitter load and the antenna to insure desired transmitter injection to the diodes for sensitive receiver operation. The diode detectors connect through individual low-pass filters to the inputs of an AC coupled, active filter, amplifier, which amplifies the doppler return signal that has been conducted by the diode detectors, while rejecting unwanted doppler frequencies to reduce false alarms. A microwave band-pass filter is so positioned in the antenna line to further reduce false alarms by defining a specific radio frequency bandwidth. A self-test feature is provided in that the DC level at one or both detector diodes can be monitored. To further reduce false alarms a correlating detection system provides a back-up signal for the doppler detector.,下面是Motion detection system with split-ring monostatic doppler detection专利的具体信息内容。
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