... CorporationSpectral Analysis of Polynomial Nonlinearity with Applications to RF Power AmplifiersG. Tong ZhouSchool of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, ... line) and ACPRUPPER(dashed-dottedline) as a function of the input power c2x(0) for a PA with memory.6. PROOFS OF THEOREMS6.1. Proof of Theorem 1Define φ2k+1(x(t)) = [x(t)]k+1[x∗(t)]k.Wecanrewrite(10)asy(t) ... function in terms of cyclic correlation with cy-cles −2πm/T. The bandw idth of H( f )affects the number of cycles present in c2x(t; τ)[15, 16].Since the bandwidth of H( f ) is limited to 1/T, H(...