We called them quad hybrids and the frequency range is limited. The phase changes just like any low or high pass filter. They both should change at the same rate. We used them in saw VCXO loops to pull the frequency with a pair of VVCs on 2 ports.
"[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote: KD5NWA: The transformer seems simple enough, especially with a fixed mixing frequency. I found it being used with a vfo for 40 meters and it does look allot like a balun or transmission line transformer. I got an email on a file to check out a twisted pair idea here today. Also, there is way to split a signal off into two for I Q with a resistor in one line, equal in resistance to either a capacitor or inductors reactance in the other line. The reactance's phase shift voltage and current by 90 degrees in the one line. It appear that a single capacitor or coil in the other line will shift ther pahse 90 degrees but only if the frequency of operatiuon is fixed or limited. Dan _____________________________________________________________________ Call Anyone, Anytime, Anywhere in the World - FREE! Free Internet calling from NetZero Voice Visit http://www.netzerovoice.com today! --------------------------------- YAHOO! GROUPS LINKS Visit your group "soft_radio" on the web. To unsubscribe from this group, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service. --------------------------------- [Non-text portions of this message have been removed] Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/soft_radio/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
