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help to design a 55-65MHz quadrature 3dB coupler - RF Cafe Forums
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fxhfzy
Post subject: help to design a 55-65MHz quadrature 3dB coupler
Posted: Wed Jul 08, 2009 3:03 am
Captain
Joined: Fri
Jun 26, 2009 6:22 am
Posts: 13
I need to design a 55-65MHz quadrature
3dB coupler for my balanced amp,maybe I have to use coax to build the
circuit for the low frequency, is there anyone could give me some reference
on how to build a low frequency coaxial hybrid?
Thanks a lot!
Top
Curtis Crow
Post subject: Re: help to design
a 55-65MHz quadrature 3dB couplerPosted: Sat Aug 15, 2009 11:23 am
Captain
Joined: Wed Jan 07, 2004 1:27 pm
Posts:
7
Hi fxhfzy.
You cannot make a hybrid coupler from standard
shielded coax cable. If you don't want to use wound coils, maybe try
this HYBRIDLINE & COUPLERLINE from Response Microwave. It is like
the Wireline that Sage used to make.
http://www.responsemicrowave.com/Products_Services/hybrids_couplers.php
http://www.sagelabs.com/comp/hybrids_couplers.shtml
Posted 11/12/2012
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