TEM cells or GTEM cells can be used to evaluate the radiated emissions of integrated circuits (ICs). The applicable frequency bandwidth of a TEM cell is limited due to the resonances of higher order modes. This paper describes how a TEM cell can be modified to extend the frequency range without changing the test topology. Several methods are proposed and implemented to suppress the higher order modes. The magnetic field coupling and electric field coupling are evaluated for the new design. The frequency bandwidth of the modified TEM cell is extended from original 1 GHz to 2. 5 GHz.
D. G. Beetner et al., "Mode Suppressed TEM Cell Design for High Frequency IC Measurements," Proceedings of the 2007 IEEE International Symposium on Electromagnetic Compatibility, Institute of Electrical and Electronics Engineers (IEEE), Jan 2007.
The definitive version is available at http://dx.doi.org/10.1109/ISEMC.2007.13
2007 IEEE International Symposium on Electromagnetic Compatibility
Electrical and Computer Engineering
Keywords and Phrases
TEM Cells; Higher Order Mode
Article - Journal
© 2007 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.