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Passive Intermodulation due to Self-Heating in Printed Transmission Lines*



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


Abstract—This article proposes a mechanism by which third-order intermodulation distortion due to self-heating is generated in transmission lines. The work shows how transmission lines made of several materials whose properties are independent of the electric and magnetic fields can generate important levels of intermodulation distortion. A circuit model, supported by finite element simulations, is presented to account for the temperature generation and for its impact on the nonlinear performance. Closed-form expressions to calculate the generated spurious are derived from the circuit model and compared with simulations. Finally, measurements and simulations of different transmission lines are presented, showing very good agreement.
IEEE Transactions on Microwave Theory and Techniques


Intermodulation Distortion, Nonlinearities, Self-Heating, Temperature, Thermal Effects, Transmission Lines, Printed Lines.


Rocas, E. , Collado, J. , Orloff, N. , Mateu, J. , Booth, J. , O'Callaghan, J. and Padilla, A. (2011), Passive Intermodulation due to Self-Heating in Printed Transmission Lines*, IEEE Transactions on Microwave Theory and Techniques (Accessed June 21, 2024)


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Created February 2, 2011, Updated February 19, 2017