Two phase detectors for 2.5-10 Gb/s NRZ data operation: a Hogge and a balanced mixer

Abstract

Two phase detector circuits with data regeneration, a Hogge and a balanced Gilbert cell mixer, were developed in a standard Rockwell AlGaAs/GaAs HBT process. Both circuits operate at 10 Gb/s; the Hogge circuit, by not having a fixed delay and multiply circuit attached to it, also performs well at lower bit rates.