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Low-Cost Broadband Electronic Coupler for Estimation of Radiated Emission of Integrated Circuits in TEM Cell

Alexandre Boyer 1 Sonia Ben Dhia 1
1 LAAS-ESE - Équipe Énergie et Systèmes Embarqués
LAAS - Laboratoire d'analyse et d'architecture des systèmes
Abstract : TEM cell is a well-known method for the qualification of radiated electromagnetic emission from integrated circuits. Combined with a 180° hybrid coupler, it provides a simple method for quantifying radiated emission. However, typical transformer or coupled line-based hybrid couplers have limited bandwidth which cannot cover the full frequency range required by integrated circuit emission tests (150 kHz to 1 GHz). This paper presents the design and the validation of a low-cost broadband electronic version of a 180° hybrid coupler dedicated to the estimation of radiation emission from TEM cell measurements. The proposed prototype is able to cover a large frequency range (from DC to 1 GHz) with a sufficient sensitivity and dynamic range for radiated emission tests in TEM cell. The cost of the presented coupler is very reasonable as it is entirely based on commercial op-amps.
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Alexandre Boyer, Sonia Ben Dhia. Low-Cost Broadband Electronic Coupler for Estimation of Radiated Emission of Integrated Circuits in TEM Cell. IEEE Transactions on Electromagnetic Compatibility, Institute of Electrical and Electronics Engineers, 2021, 63 (2), pp.636-639. ⟨10.1109/TEMC.2020.3021135⟩. ⟨hal-02937460⟩

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