Logic Models Supporting the Design of MOBILE-based RTD Circuits

Boolean logic function synthesis for generalised threshold gate circuits

“…This concept was presented by Avedillo et al [2,3] and Berezowski [4]. They proposed to build circuits from the serially connected NDR l and NDR d paralleled by branches of a single NDR-transistor pair [2] or a single NDR serially connected with serial-parallel (SP) transistor network [3,4]. In this paper we extend the concept presented in [4], propose a modified model of the GTG circuit, prove that GTG enables to implement any n-variable boolean function, and give a GTG synthesis algorithm.…”

“…selecting parameters of NDR elements) for a given boolean function. Successive paper by Avedillo et al [3] proposed a modified structure that utilises one or many, serially connected transistors to switch each NDR element. This allows to implement all n-variable boolean functions, however, extends the set of input variables yielding circuit of up to 2 n + 1 branches.…”

“…This can be achieved if NDR l and/or NDR d is paralleled with another NDR and a transistor that operates as a switch. This concept was presented by Avedillo et al [2,3] and Berezowski [4]. They proposed to build circuits from the serially connected NDR l and NDR d paralleled by branches of a single NDR-transistor pair [2] or a single NDR serially connected with serial-parallel (SP) transistor network [3,4].…”

“…Circuits proposed by Avedillo [2,3] and Berezowski [4] are based on the monostable-bistable transition logic element (MO-BILE) concept [1]. Basic MOBILE circuit that operates in such regime, consists of two NDR elements: a load (NDR l ) and a driver (NDR d ) connected in series ( Fig.…”

“…Exploration of negative differential resistance (NDR) and its application to logic circuits focuses on theoretical analyses [2,3,4,8,9] and physical implementations [5,6]. Circuits proposed by Avedillo [2,3] and Berezowski [4] are based on the monostable-bistable transition logic element (MO-BILE) concept [1].…”