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A simple RTD-based circuit for Boolean CNN cells

We investigate the use of resonant tunneling diodes (RTDs) in circuits for Boolean cellular neural networks (CNNs). RTDs excel in their electronic properties, their size, and switching speed, and can readily be integrated together with GaAs FETs. A simple RTD-based circuit is proposed and shown to be capable of realizing linearly separable Boolean functions. To implement the network parameters, the transconductances of the FETs are used. Hence, the cell is not programmable or universal, but application-specific. The theoretical results are confirmed by Spice simulations, and an example is given.