PHASE METER FOR SIGNALS OF HIGH AND ULTRAHIGH FREQUENCY Russian patent published in 1998 - IPC

FIELD: instruments. SUBSTANCE: device has signal addition unit, envelope detector, processing unit, synchronization unit. Goal of invention is achieved by introduced second controlled digital phase shifter in addition to digital phase shifter which is present in state-of-the-art device. Different combinations of input controlled phase shifts corresponding to different voltage values at output of envelope detector are set in subsequent ticks of operation cycle. Their set is used by processing unit for generation of output value of phase meter. Vector combinations which are required for phase detection are generated serially and detected by same envelope detector. This results in possibility to suppress mismatch effects caused by two parallel detectors. EFFECT: increased precision of measurements. 2 tbl, 1 dwg