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Old May 8th 06, 10:49 AM posted to rec.radio.amateur.homebrew
Harold E. Johnson
 
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Default Quadrature Hybrid Construction


"Radra" wrote in message
oups.com...
I am willing to use several hybrids to cover the band, if I must. But
it would be helpful to use broadband hybrids so I don't need to use so
many. I appreciate the reference to the QST article on hybrid
construction. I will build one to see how much bandwidth I can get.
Would like to find a construction technique which yields wider
bandwidth tho. The PSCQ-2-32 from Mini-Circuits has a 3.2 to 32 MHz
bandwidth! Wonder how they do it.

The LO technique is not applicable for my design but it is interesting.
I will have to give it some thought to understand how it works.

Vinton


Well, for that requirement, you need :

G.W. Horn, I4MK, "How to design Wide-Band RF Quadrature Network"
QEX, November 1982, pp5-9.
3-30 MHz quadrature networks designed by VE5FP/VK2BOX

Rick Campbell, KK7B has "SPRAT Technical cartoons #1 and #2" that have
details on single band hybrids, and the component values for them.

W4ZCB