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A complete frequency response analysis of the Doherty amplifier is presented with the conventional output combining network consisting of two quarter-wavelength (&#x03BB;/4) transmission lines at a center frequency <i>f</i><sub>0</sub> . Expressions for output power and efficiency were derived over the whole dynamic range and at any frequency <i>f</i>. The(More)
An improved large-signal modeling approach of GaN on Si devices for RF high-power applications is presented. This approach accounts for the parasitic buffer loading effect under microwave RF operation in addition to the self-heating and trap ping effects associated with high-power operation conditions. A hybrid optimization (genetic and Simplex) technique(More)
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