专利名称：Radar detection circuit for a WLAN
transceiver
发明人：Christopher J. Hansen申请号：US11415841申请日：20060502
公开号：US20060199587A1公开日：20060907
专利附图：
摘要：A single chip radio transceiver includes circuitry that enables detection of radarsignals to enable the radio transceiver to halt communications in overlapping
communication bands to avoid interference with the radar transmitting the radar pulses.
The radio transceiver is operable to evaluate a number of most and second mostcommon pulse interval values to determine whether a traditional radar signal is present.The radio transceiver also is operable to FM demodulate and incoming signal todetermine whether a non-traditional radar signal such as a bin-5 radar signal is present.After FM demodulation, the signal is averaged wherein a substantially large value isproduced for non-traditional radar signals and a value approximately equal to zero isproduced for a communication signal that is not FM modulated with a continuouslyincreasing frequency signal. Gain control is used to limit incoming signal magnitude to aspecified range of magnitudes.
申请人：Christopher J. Hansen
地址：Sunnyvale CA US
国籍：US
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