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The design of a compact single-feed single-layer microstrip antenna with dual-frequency and dual-polarisation operations is presented. By adjusting the length of the bar slot and the length of the patch sides, the antenna can achieve a desired ratio between the two resonant frequencies. Experimental results for a fabricated antenna are presented and discussed.
Relaxation time models found in most hydrodynamic device simulators fail in the presence of abruptly decreasing electric fields. Such fields are encountered at MOSFET drain junctions and lead to carrier distribution functions composed of two distinct populations: one hot and one cold. An approach which expresses features of both populations and produces more accurate simulation results is presented...
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