reconfigurable downconversion mixer

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nisha gupta

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hi
i have designed a reconfigurable switching downconversion gibert cell mixer with R and C load so that it can filter high frequency component. but at IF output it is not filtering high frequency component. but when i have designed simple downconversion mixer with RC load it was filtering high frequency component. i m not able to understand why this problem is ocurring in reconfigurable mixer. can any1 suggest anythg.
 

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