from what I have read, homodyne transceiver uses Complex mixing while heterodyne receiver doesn't. Most system nowaday are using homodyne setup, is this correct? I'd thought most are using heterodyne. Anyway, so what exactly is complex mixing? Is it because we're multiplying with a single tone? .....could someone please help me clarify it, I don't think I fully understood it. Thanks
yeah these days most the integrated receivers use the ZIF or homodyne architecture , the ZIF use IQ mixing
but the hetrodyne , in the mixging use the signal osc only
in homodyne the input high frequency signal is directly converted to its baseband equivalent and hence the mixing is very complex... i.e no intermediate frequency is involved...
So is it true that 99% of the transceiver today are based on homodyne design for its simplicity? Is that true? I was told by someone but I just want to more inputs. Thanks guys.
yeah , i have used alot of IC for CDMA and WCDMA receivers and all are based on the direct conversion architecture "Qualcom , NXP , Silabs " produce them
yeah they are complex , but now the VLSI technology and the DSP can be integrated with the transceiver make the implementation of the direct conversion more and more vesible