Novel Bandstop Filter With Improved Flat NGD Characteristics and Signal Attenuation in Passband
A bandstop filter with flat negative group delay (NGD) PAJAMAS is proposed.The flatter NGD and reduced insertion loss have been achieved in the passband of the bandstop filter.This paper provides the group delay and insertion loss equations for each component of bandstop filter, then analyzes the effects of different unit values on bandwidth, flatn