Polynomial Model for High-Order and Multi-Carrier Passive Intermodulation Products

Dmitry Kozlov, Alexey Shitvov, Alexander Schuchinsky

Research output: Contribution to conferencePaperpeer-review


Passive intermodulation (PIM) often limits the performance of communication systems, particularly in the presence of multiple carriers. Since the origins of the apparently multiple physical sources of nonlinearity causing PIM in distributed circuits are not fully understood, the behavioural models are frequently employed to describe the process of PIM generation. In this paper, a memoryless nonlinear polynomial model, capable of predicting high-order multi-carrier intermodulation products, is deduced from the third-order two-tone PIM measurements on a microstrip transmission line with distributed nonlinearity. The analytical model of passive distributed nonlinearity is implemented in Keysight Technology’s ADS simulator to evaluate the adjacent band power ratio for three-tone signals. The obtained results suggest that the costly multi-carrier test setups can possibly be replaced by a simulation tool based on the properly retrieved nonlinear polynomial model.
Original languageEnglish
Number of pages4
Publication statusAccepted - 2016
Event46th European Microwave Conference - ExCel, London, United Kingdom
Duration: 04 Oct 201606 Oct 2016
Conference number: 46


Conference46th European Microwave Conference
Abbreviated titleEuMC 2016
CountryUnited Kingdom
Internet address


  • Communication nonlinearities
  • passive intermodulation
  • polynomial model
  • nonlinear system characterisation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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