Fundamental oscillations up to 200 GHz in resonant tunneling diodes and new estimates of their maximum oscillation frequency from stationary-state tunneling theory
- 1 August 1988
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 64 (3) , 1519-1529
- https://doi.org/10.1063/1.341827
Abstract
Fundamental oscillations have been measured up to 200 GHz in resonant‐tunneling diodes at room temperature. Oscillations in the range 102–112 GHz were achieved with diodes mounted in a WR‐6 waveguide resonator, and the peak output power in this range was approximately 5 μW. The same diodes oscillated between 192 and 201 GHz and generated about 0.2 μW when mounted in a WR‐3 resonator. The estimated maximum oscillation frequency ( fmax) for these devices is 244 GHz, assuming the average drift velocity across the depletion layer to be 4×107 cm s−1. This estimate has been obtained from a new phenomenological theory of the negative differential conductance which accounts for the frequency‐dependent spreading resistance and transit‐time delay. The theory is also used to show that diodes having fmax exceeding 600 GHz are feasible simply by modifying the doping profile in the regions on either side of the double‐barrier structure.This publication has 15 references indexed in Scilit:
- Observation of millimeter-wave oscillations from resonant tunneling diodes and some theoretical considerations of ultimate frequency limitsApplied Physics Letters, 1987
- Millimeter-band oscillations based on resonant tunneling in a double-barrier diode at room temperatureApplied Physics Letters, 1987
- Large room-temperature effects from resonant tunneling through AlAs barriersApplied Physics Letters, 1986
- Frequency limit of double barrier resonant tunneling oscillatorsApplied Physics Letters, 1986
- Tunneling currents and two-body effects in quantum well and superlattice structuresApplied Physics Letters, 1985
- Effect of Inelastic Processes on Resonant Tunneling in One DimensionPhysical Review Letters, 1985
- Resonant tunneling oscillations in a GaAs-AlxGa1−xAs heterostructure at room temperatureApplied Physics Letters, 1985
- Thermal Stability of a Short Period AlAs/n-GaAs SuperlatticeJapanese Journal of Applied Physics, 1985
- Quantum well oscillatorsApplied Physics Letters, 1984
- Tunneling in a finite superlatticeApplied Physics Letters, 1973