filter design problem - RF Cafe Forums

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YZ
Post subject: filter design Posted: Tue Aug 23, 2005 8:12 am
hello all,

I designed a BPF filter at 7GHz BW=400MHz.
the filter topology is chebychef and the type of microstrip edge coupled.
I use the Ansoft Designer software.

my problem is bad VSWR,after EM simulation i got -6dB R.L.

what could be the reason for this ?
how can i improve the R.L. ?

thanks

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Guest
Post subject: Posted: Tue Aug 23, 2005 9:31 am
What is the ripple you designed for. The amount of ripple will dictate the VSWR.

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YZ
Post subject: Posted: Tue Aug 23, 2005 4:00 pm
Anonymous wrote:
What is the ripple you designed for. The amount of ripple will dictate the VSWR.

The ripple i designed for, is 0.01dB.

Posted 11/12/2012