Abstract:The performance of direct-coupled GaAs MESFET ring oscillators having a l p m self-aligned recessed-gate structure defined by optical contact lithography on CVD epitaxial material is reported. Propagation delays as low as 20.9 and 16.1 ps/stage have been achieved at 300 and 77 K, respectively, representing the fastest results reported to date for GaAs ring oscillators having conventional 1-pm gate technology.
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