Abstract
Based on the active coupled line concept, a novel approach for efficient signal and noise modeling of millimeter-wave field-effect transistors is proposed. The distributed model considers the effect of wave propagation along the device electrodes, which can significantly affect the device performance especially in the millimetre-wave range. By solving the multi-conductor transmission line equations using the Finite-Difference Time-Domain technique, the proposed procedure can accurately determine the signal and noise performance of the transistor. In order to demonstrate the proposed FET model accuracy, a distributed low-noise amplifier was designed and tested. A model selection is often a trade-off between procedure complexity and response accuracy. Using the proposed distributed model versus the circuit-based model will allow increasing the model frequency range.
Highlights
Efficient Computer-Aided Design (CAD) of high-frequency systems is critically based on the performance of their internal component models
The distributed model considers the effect of wave propagation along the device electrodes, which can significantly affect the device performance especially in the millimetre-wave range
A distributed model is proposed [9]. It includes the effect of wave propagation along the electrodes more accurately than the semi distributed model the CPU time of this model is a little higher than the slice model
Summary
Efficient Computer-Aided Design (CAD) of high-frequency systems is critically based on the performance of their internal component models. A full-wave timedomain analysis involving distributed elements should be considered. This type of analysis is highly time consuming [4,5,6], even if different simulation time reduction techniques have been already proposed [7]. By increasing the frequency up to the millimetre-wave range, the slice model cannot precisely model the wave propagation effect and phase cancellation phenomena. A distributed model is proposed [9] It includes the effect of wave propagation along the electrodes more accurately than the semi distributed model the CPU time of this model is a little higher than the slice model. The proposed model was demonstrated through the design of a distributed amplifier
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