You could but you'll find you can't get even phase shift across a wide enough band of frequencies to make it practical, hence the phase shift added in the oscillator
The reason for getting your IQ after the second mixer is because since the oscillator is fixed, it's easy to get the phase shift at a single frequency ... the further you get away from the phase shifter's center frequency the more the phase accuracy gets off and sideband rejection suffers JR --- In [email protected], "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote: > > JR > > There is an I Q output, I was just wondering if when I already have a 50 kHz i.f. as I have in my Hallicrafters if I split and phase shifted that with a mere transformer to the I Q outputs would I need a mixer still? In some ways I think a mixer will still be involved for the sum and difference products. Yet if can split the output that is already low into the phase shifted I Q components with a transformer I will try it here soon. > > Maybe I should ask Alberto. > > Dan > > > _____________________________________________________________________ > Call Anyone, Anytime, Anywhere in the World - FREE! > Free Internet calling from NetZero Voice > Visit http://www.netzerovoice.com today! > 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/
