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About the gilbert cell mixer

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sujata10

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Hello,
I am new in this field and i am designing gilbert cell mixer but i don't know how to do the input and output matching. Can anyone help me with this ????
 

BigBoss

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Input Matching is simply like LNA matching so Conjugate Matching.LO port is hardly driven so it doesn't need matching.
Output Matching can be done by obtaining large signal output impedance ( Large Signal S-Parameters ) then apply a proper Conjugate Matching or Harmonic Matching that decreases harmonic contents at the output.( It's a little bit tricky but not too hard..)
 

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