Cognitive Radio Chip-Hardware Challenges - Hardware Conference
Cognitive Radio Chip-Hardware Challenges - Hardware Conference
Cognitive Radio Chip-Hardware Challenges - Hardware Conference
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Cancelling Harmonics/Sidebands<br />
1-path Desired signal, LO + BB LLO ±B BB<br />
Power<br />
18-path<br />
Power<br />
Desired signal<br />
3 LO +3 BB<br />
(3=0×18+3)<br />
Non-cancelled terms<br />
L=j×N+B<br />
17 LO - BB<br />
j=…-2,-1,0,1,2,…<br />
15 LO -3 BB<br />
(15=1×18-3)<br />
1 3 5 7 9 11 13 15 17<br />
[Shresta et al, JSSC 2008]<br />
/ LO<br />
29<br />
<strong>Cognitive</strong> <strong>Radio</strong> <strong>Challenges</strong>, Eric Klumperink
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