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Mixer design guide-equations

Question asked by mantow on Jun 28, 2005
Latest reply on Jun 30, 2005 by aehoward
Hi,

I do not understand the equations used in the mixer design guide "Mix_SE_Spect_Iso" for calculating the output IF impedance of the mixer.

For example, at the sum IF frequency:
ZoutUpConv=mix(SM.Vload,{1,1,1},SM.Mix)/1mA
Z_IF_UpConv=ZoutUpConv*HB.Zload[0]/(HB.Zload[0]-ZoutUpConv)

Please could someone help to explain how this method works?

Many thanks.  

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