The Application of a Hard Limiting Technology In a Field-strength and Phase Meter for Low-frequency Signal

摘要

The application of a hard limiting technology in a field-strength and phase meter for low-frequency signal is introduced in this paper. A hard limiting amplifier can be applied as a phase detector to achieve tracking and measuring of carry-wave phase, and it's quite excellent against the atmospheric noise, continuous wave interfere and synchronous interfere. The design principle and testing results for phase meter are presented, and the excellent anti-jamming performances of the hard Limiting technology are analyzed.