Patent Document ID: 8848824
Application ID: 12400764
Patent Flag: 1

Claim One:
1. A linearizer for reducing nonlinear distortion in radio frequency and microwave systems having one or more fundamental frequencies, comprising: at least one complex nonlinear distortion generator (CNDG) directly generating odd-order in-phase and quadrature phases of RF and microwave nonlinear distortion products of the system input signal; tunable control means to independently adjust the amplitude of each phase; and summation means to sum said in-phase and quadrature phases of nonlinear RF and microwave distortion products to the system output, whereby the sum of the nonlinear distortion products at the system output is reduced or eliminated by destructive interference while the fundamental frequencies are substantially unaffected; wherein said CNDG comprises a plurality of odd-order nonlinear distortion generators (“NDG”) generating the in-phase and quadrature phases of RF and microwave nonlinear distortion products of the system input signal; wherein said odd-order nonlinear distortion generators comprise single-ended differential-pair or pseudo-differential-pair transistors driven appreciably into their nonlinear regions; and further including degeneration means, wherein said nonlinear distortion generators are degenerated with degeneration impedances in quadrature with one another.