Microwave amplification to 2.5 GHz in a quantum state transfer device

Pond, J. M.; Kirchoefer, S. W.; Cukauskas, E. J.
December 1985
Applied Physics Letters;12/1/1985, Vol. 47 Issue 11, p1175
Academic Journal
Reflection amplification has been demonstrated from 40 MHz to 2.5 GHz using a bilevel superlattice structure known as a quantum state transfer device. Measurements of the magnitude and phase of the voltage reflection coefficient were made at 300 K using a specialized microwave probe. The maximum normalized gain, at 40 MHz, approaches the gain expected from dc measurements of the negative differential resistance.


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