hamid_h552
Newbie level 5
hello dear friends.
I've designed a bandpass filter in 140 MHz and 20MHz bandwidth. I've casscaded two 3th order eliptic filter for this purpose.
the resulting insertion loss is about 3 dB in simulation , but Its about 12 dB practically.
it's return loss is very bad in pass band (4~6 dB) and this is the reason for high insertion loss.
So how I can improve the return Loss?
tnx
I've designed a bandpass filter in 140 MHz and 20MHz bandwidth. I've casscaded two 3th order eliptic filter for this purpose.
the resulting insertion loss is about 3 dB in simulation , but Its about 12 dB practically.
it's return loss is very bad in pass band (4~6 dB) and this is the reason for high insertion loss.
So how I can improve the return Loss?
tnx