myjasonlee
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Posts: 10
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Sorry there are some problems. Kindly refer to the below corrected question.......... Thank you
======================================== Hello Everyone I wish to clarify with you about the following topics If the input signal is coming in with two closely spaced channels, say at w and w + delta , then the third order IM terms of interest are 2 w - ( w + delta ) = w - delta and 2 ( w + delta ) - w = w + 2delta My question is, are both of these frequencies important for IM distortion, or is it only the first one, which is nearest to w that causes problems ? For multitone input, say N tones, each spaced by delta , so that we have w , w + delta , w + 2 delta , w + 3 delta , ..., w + N delta , we will get many 2 tone and 3 tone IM products 2 (w + i delta ) - ( w + j delta ) = w + ( i - j ) delta and (w + i delta ) + ( w + j delta ) - (w + k delta ) = w + ( i + j - k )delta . Are the only terms of interest for IM3 the ones where i - j = ± 1 and i + j - k = ± 1 ? Thanks Jason and Tel
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