ADS :mixer frequency choice

[dili Neo]

Hi,

how we decide the choice of LO frequency while doing up/down conversion using a mixer..?.what is the theory behind it...

Also can u tel me hw to do IF planning using Agilent ADS 2011 version??

thanks in advance

 

[jiripolivka]

If you know no theory, please read a book about mixers. There is a lot of knowledge needed to design a good mixer; commercial ones are quite expensive for a reason.

 

[dili Neo]

hi,
can u suggest me a book ,available as free online pdf, to get a hold on mixer frequency selection.

If you know no theory, please read a book about mixers. There is a lot of knowledge needed to design a good mixer; commercial ones are quite expensive for a reason.

 

[jiripolivka]

I know one by Maas: MIcrowave mixers. Try Minicircuits.com, they offer white papers on mixer applications. Also, Markimicrowave.com have good mixers and instructions.

 

[volker_muehlhaus]

https://leleivre.com/rf_mixerspur.html
https://www.hittite.com/tools/spurcalc/spurcalc25jarlocke.htm

 

[luciforlove]

for a simple system，if'freq is 0.1*LO’freq,so a filter can reject image freq from RF,bur for a complex system,it maybe not appropriate.