Schaltung zur Signalstärkedetektion

摘要

A superheterodyne receiver (100) is provided in which first (107) and second envelope detectors (111) having a function of regulating the gain and offset voltage are used to detect receive signal levels from first (IF1) and second intermediate frequency signals (IF2). These receive signal levels are compensated with respect to a phase difference through a phase difference compensating circuit (113). The compensated signals are then summed by an adder (114) to provide a receive signal level detection output.