AlGaN/GaN HEMT on Si (111) substrate for millimeter microwave power applications
2010
This paper reports the capability of AlGaN/GaN HEMTs on Si (111) substrates for microwave power applications above 30GHz. A current gain cut-off frequency f t =90GHz and a maximum power gain cut-off frequency f max =135GHz are obtained for a 80nm gate-length transistor. These results, associated with low lag effects, demonstrate the capability of these transistors for high performance, cost effective, MMIC fabrication on a Si substrate for high frequency microwave power applications.
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