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filter design help!!
a low pass filter,f0=2695MHz,rejection:
3800-3999MHz -25db min
4000-5000MHz -40db min
5000-14999MHz -60db min
15000-20000MHz -20 min
I used coaxial structure and synthesized and optimized it with senerade.
But -60dB seemed impossible to me.How can I get it?Please help me!
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