Patent ID: 7702291

Claim:
A radio transceiver, comprising: radio front end for receiving, amplifying and down-converting and filtering a radio frequency (RF) signal to produce a low frequency received signal; analog-to-digital converter (ADC) operatively coupled to receive the low frequency received signal, the ADC producing an ingoing digital signal based on the received RF signal; baseband processor coupled to receive and process the ingoing digital signal; radar detection circuit coupled to receive the ingoing digital signal, wherein the radar detection circuit further includes: power detection circuitry that receives an ingoing digital signal and produces a power indication signal based on the ingoing digital signal; magnitude adjustment block coupled to receive the power indication signal to produce a magnitude adjusted signal; and a threshold comparison state machine that evaluates magnitude adjusted signal; wherein the radar detection circuit: detects incoming pulses and produces pulse data to a FIFO; generates a table of pulse data for a series of pulses; evaluates the pulse data within the table to remove pulse data for pulses that do not satisfy specified radar pulse characteristics; groups a plurality of pulse data within the table into groups of a specified size; performs radar detection processing; and wherein the baseband processor inhibits transmission of signals in overlapping frequency bands whenever a radar signal has been detected.