Unformatted text preview: n be ignored, the output component at frequency f 1 is
due mainly to the ﬁrstorder term. Thus, the output power will be proportional
to P1 and this component would decrease by 2 dB. On the other hand, the
component 2f1 − f2 originates from the thirdorder term through a product of
the form A2 cos2 (ω1 t)A2 cos(ω2 t). The power in this term will be proportional
1
2
to P1 so this term would decrease by 4 dB. The component at 3f1 results from a
3
term of the form A3 cos3 (ω1 t). The power in this term is proportional to Pin so
1
this term decreases by 6 dB. Similar reasoning applied to the other components
yields the following results for the change in power resulting from a decrease of
2 dB in P1 :
Component
f1
2f2
2f2 − f1
2f1 − f2
3f1 1 Change
2 dB
0 dB
2 dB
4 dB
6 dB...
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 Spring '08
 Staff
 Frequency, Volt

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