Third Intermodulation Distortion and Harmonic Generation in Mismatched Nonlinear Transmission Lines

Published

January 1, 2009

Author(s)

James C. Booth, Jordi Mateu, Carlos Collado, Eduard Rocas, Juan M. O'Callaghan, Nathan D. Orloff

Abstract

This paper describes the procedure to obtain analytical expressions for the spurious signals generated in nonlinear transmission lines with impedance mismatch. Using these expressions one can rapidly extract the nonlinear parameters describing the nonlinear effects due to a nonlinear conductor, L(i) and R(i), such as in superconductors, and / or the nonlinear parameters due to a nonlinear dielectric, C(v) and G(v), such as in ferroelectrics. The resulting closed form expressions have been validated with equivalent circuit simulations. Spurious signal measurements on several coplanar waveguide superconducting and ferroelectric transmission lines have been explained using the resulting close form expressions.

Citation

IEEE Transactions on Microwave Theory and Techniques

Volume

57

Issue

0018-9480

Pub Type

Journals

Keywords

Ferroelectrics, Harmonic Balance, Intermodulation products, Nonlinearities, Nonlinear measurements, Superconductors.

Citation

Booth, J. , Mateu, J. , Collado, C. , Rocas, E. , O'Callaghan, J. and Orloff, N. (2009), Third Intermodulation Distortion and Harmonic Generation in Mismatched Nonlinear Transmission Lines, IEEE Transactions on Microwave Theory and Techniques (Accessed October 15, 2025)