Cognitive Radio Chip-Hardware Challenges - Hardware Conference

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Multipath Polyphase Technique Divide the nonlinear circuit into ‘N’ equal smaller pieces Nonlinear circuit Nonlinear circuit Nonlinear circuit Nonlinear circuit Cognitive Radio Challenges, Eric Klumperink 24
Multipath Polyphase Technique (2) Add equal but opposite phase shift before and after Use equidistant phases: path i uses i*2π/N path i=1 0×2π/N Nonlinear circuit -0×2π/N y 1 x(t) path i=2 1×2π/N Nonlinear circuit -1×2π/N y(t) y 2 y N path i=N Nonlinear circuit ( N-1)×2π/N -(N-1)×2π/N Cognitive Radio Challenges, Eric Klumperink 25
Page 1 and 2: Cognitive Radio Chip-Hardware Chall
Page 3 and 4: Static Frequency Allocation Almost
Page 5 and 6: Applications more capacity more us
Page 7 and 8: Cognitive Radio Hardware Challenge
Page 9 and 10: How much Path Loss: “inverse squa
Page 11 and 12: Long distance large loss High SND
Page 13 and 14: Downconversion / filtering required
Page 15 and 16: Overview • Introduction Cognitive
Page 17 and 18: How implement RF band-filtering Q 1
Page 19 and 20: Flexible Integrated Filter Idea f S
Page 21 and 22: Filter Properties: flexibly tunable
Page 23: Cognitive Radio Transmitter Current
Page 27 and 28: N-PATH: First Non-cancelled Compone
Page 29 and 30: Cancelling Harmonics/Sidebands 1-pa
Page 31 and 32: Spectrum Sensing: shadowing problem
Page 33 and 34: Linearity vs Noise Effect of non-li
Page 35 and 36: f test [Oude Alink et al, DySPAN 20
Page 37 and 38: XCSA: Measurements III RBW=10kHz si
Page 39: Questions Cognitive Radio Challenge

Cognitive Radio Chip-Hardware Challenges - Hardware Conference

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