Re: [soft_radio] AM demod from I/Q in hardware

[Tom Holden]

There is a patent entitled "AM Demodulator for I/Q Receivers" by Edward Forster at: &EndHighlight=&HLNavigate=">http://gb.espacenet.com/search97cgi/s97_cgi.exe?action="">   Maybe you can adapt something from it.   73, Tom   ----- Original Message ----- From: Chris Hirt To: soft_radio@yahoogroups.com Sent: Thursday, August 25, 2005 3:38 AM Subject: [soft_radio] AM demod from I/Q in hardware Hi all Perhaps my question is stupid, but I am momentary at the end of my ideas. What the heck is the demodulation of AM if I have a I/Q signal ? My homebrew HDR-2005 (= HardwareDefinedRadio 2005 ;-) is a mixture between QRP2001, SDR-1000 and other concepts. It sounds great in SSB. I demodulate LSB, USB or both but not AM. Yes, yes I know M = srt(I^2 + Q^2), but how I do it in hardware ! Up to now all my trials with AM ended in much distortion. Does anybody knows how I produce a clear AM from I and Q with (analog) hardware? Best regards Chris SPONSORED LINKS Craft hobby Hobby and craft supply Ham radio Hobby supply Ham radio sales 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.