A wideband low-loss negative group delay circuit based on negative impedance converters

摘要

In general, negative group delay (NGD) is generated by using an abnormal phase response of either passive or active RLC resonators, and therefore, it suffers from unavoidable narrow bandwidth and large insertion loss. In contrast, we propose a new scheme to yield a wideband low-loss NGD based on negative impedance converter (NIC) technology.