Multivalued Logic Using a Novel Multichannel GaN MOS Structure

Bulk-Si CMOS technology has been consistently improving for over 40 years, following Moore´s law, by gate length scaling. In this letter, we present a novel charge-based multistate transistor device on the AlGaN/GaN system which uses a given gate length but handles more than two states any time. This novel multichannel MOS device, having a higher processing capability than a binary transistor, is then used to implement multiple valued logic gates in a pull-down network scheme. In this letter, we use the results of a 2-D device simulation as proof of concept and propose architectures for the implementation of some basic quaternary logic gates.