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Filter Design Problem - RF Cafe Forums

The original RF Cafe Forums were shut down in late 2012 due to maintenance issues. Original posts:

Amateur Radio | Antennas | Circuits & Components | Systems | Test & Measurement


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

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