Re: how to design microstrip filter with high stopband rejec
hello guys,
I ve designed many planar filters in microstrip and suspended stripline tx-lines, my advice if u need a higher rejection is definitely to use suspended stripline, because it has lower losses than microstrip, or equally to use a shielded microstrip line (the idea is simply to reduce the radiation losses caused by the line itself, especially for bandpass coz they are more senstive 2 losses !
Hint: try 2 design a transmission-zero at this frequency 2 achieve ur desired rejection !
goodluck