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Thermal models for simulating heating and cooling of PIN diode and FET-based MRI coil blocking circuits are presented. The temperature dependent parameters in the two basic circuit elements as well as the related SPICE-compatible circuit models are discussed. Impedance versus temperature measurements for both PIN diode and MOSFET are presented that confirm the validity of model usage. A MRI coil blocking...
A compact model for small-signal equivalent circuit of DG-MOSFETs is presented. The intrinsic parameters are obtained from DC analytic compact model. This DC model allows determining the mobile charge inside the transistor channel, from which the intrinsic parameters are derived. Additionally, the extrinsic capacitances are calculated and included into the model. This compact small-signal model allows...
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