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What is the advantage adding the inductor in balun circuit?

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John_li

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Re: What is the advantage adding the inductor in balun circu

The inductor in front of the differential LNA will improve the common mode rejection and also to reduce the second-order distortions.
 

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    John_li

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Thanks,vfone,can you expain them or share me some documents about two cases in detail ?And how to select the inductor value?
Thanks
 

Re: What is the advantage adding the inductor in balun circu

A few Ω will increase (improve) common mode - inductor have a few Ω.

When your worked with diff mode by default you IM2 very good
 

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    John_li

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Thanks,DDavid.Any documents introduce differential mode reducing IM2？
 

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