Engineered Passive Nonlinearities for Broadband Passive Intermodulation Distortion Mitigation

Justin Henrie, Purdue University
Andrew Christianson, Purdue University
William J. Chappell, School of Electrical and Computer Engineering, Birck Nanotechnology Center, Purdue University

Date of this Version


This document has been peer-reviewed.



By adding controlled thicknesses of nickel and gold plating to the conductors of a coaxial transmission line, the magnitude of passive intermodulation produced by the transmission line can be controlled with precision. Theoretical predictions of distortion magnitude as a function of plating thicknesses are presented, along with an experimental validation. These adjustable-magnitude passive intermodulation sources are used to give a fourfold improvement in the bandwidth of techniques presented previously, demonstrating that cancellation can for the first time be achieved in bandwidths needed for cellular systems.


Nanoscience and Nanotechnology