MOUL, WAYNE L.,BEHNKE, ROBERT J., II,FRUSHOUR, SCOTT E. M.,JENSEN, JEFFREY L.
申请号：
CA2816774
公开号：
CA2816774A1
申请日:
2013.05.28
申请国别(地区):
CA
年份:
2013
代理人:
摘要：
Systems and corresponding methods for determining characteristics of an outputsignal generated by a high-frequency medical device using low-frequencymeasurementsystems are disclosed. A digital measurement system includes an oscillator, amixer, anda controller coupled to each other. The oscillator provides a reference signalhaving asecond frequency. The mixer generates a down-converted signal based on theoutputsignal and the reference signal. The controller then determines acharacteristic of theoutput signal (e.g., frequency or phase) based on the down-converted signal.An analogmeasurement system includes a filter having a center frequency, a rectifier,and acontroller. The filter filters the output signal and the rectifier rectifiesthe filtered signal.The controller samples the rectified signal and determines a characteristic ofthe outputsignal based on the level of the rectified signal. The reference signalcontroller mayadjust a characteristic of the output signal based on the determined frequencyand/orphase of the output signal.
