Disadvantages of Passive Filters

Introduction :

Passive Filters has main many disadvantages which are following-

» There is no isolation b/w input and output.

» These circuits can not provide any gain.

» There is always someloss of signal, It can be in the passband.

» Circuit becomes bulky if inductors are used.

» There is no clear demarcation between Passband and stopband but actually it (Passband & Stopband)       get mixed up.

» In this frequency responce is not sharp as no sudden change in the output when switching from    passband to stopband.

» Source loading can take place.