Electronics Letters · 1988 · 37 citations · 3 references
EngineeringElectrical EngineeringMicroelectronicsMicrowave EngineeringSemiconductor DevicesElectron Beam LithographyField-effect TransistorsHigh-frequency Semiconductor DevicesIntegrated Circuit DesignMicrowave Integrated CircuitsMicrowave Semiconductor DevicesGaas Microwave Integrated CircuitsMicrowave TransistorsMillimeter-wave TransistorsModulation Doping
AlGaAs/GaAs modulation-doped field-effect transistors (MODFETs) have been fabricated with ‘T’ cross-section 0.1 μm gates using electron-beam lithography. A unity current gain cutoff frequency fT of 113 GHz has been measured for a spike-doped MODFET with a GaAs buffer. This is the highest measured fT reported to date for FETs of any kind.
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Microwave characterization of very high transconductance MODFET
L.H. Camnitz, P.J. Tasker, H. Lee et al. · 1984 · 26 citations