Complex intermediate frequency based receiver architecture

摘要

The disclosure relates to a Complex Intermediate Frequency (CIF)-based receiver adapted to process a received signal comprising a signal component at a desired frequency and a signal component as an image frequency. The CIF-based receiver determines the power of the received signal by calibrating the receiver to minimize the power of the signal component at the image frequency that interferes with the signal component at the desired frequency, introduces signal leakage from the image frequency to intentionally degrade the quality of the signal component at the desired frequency, and determines the power of the signal component at the image frequency based on the amount of degradation.

主权项

1. A method of determining signal power in a complex intermediate frequency-based (CIF-based) receiver adapted to process a received signal that comprises a signal component at a desired frequency and a signal component at an image frequency, the method comprising:
calibrating the CIF-based receiver to minimize the power of the signal component at the image frequency that interferes with the signal component at the desired frequency; introducing signal leakage from the image frequency to intentionally degrade the quality of the signal component at the desired frequency; and determining the power of the signal component at the image frequency based on the amount of degradation.