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Industrial Research And Consultancy Centre
Patent
Leaky Integrate & Fire (LIF) Neuron based on Floating Body Effect
Abstract

The patent describes a Partially Depleted (PD) Silicon-On-Insulator (SOI) MOSFET designed to emulate Leaky Integrate-and-Fire (LIF) neuron behavior. The device includes a substrate, a buried oxide layer, a channel region, source and drain regions, a gate oxide layer, a gate, and a reset circuit. The MOSFET mimics the neuron's spiking behavior through a series of electronic processes, including impact ionization and hole storage.

Figure 1. (a) Device schematic with biased terminals, (b) Input biasing scheme (VSG(t),VDG(t)) with expected output (ID(t)), (c-i) Equilibrium band diagram. (ii) Electron hole pair generation due to impact ionization (

Problem Statement

Traditional implementations of neuron-like circuits either lack area efficiency, are not CMOS compatible, or are power inefficient. Solution: This invention addresses these issues by utilizing a PD SOI MOSFET, which is CMOS compatible and incorporates an efficient reset circuit and impact ionization mechanism to emulate neuron behavior.

Uniqueness of the Solution
  • Salient technical feature(s): 

            - PD SOI MOSFET structure. 

            - Impact ionization enabled the floating body effect. 

            - Efficient reset circuit with capacitors for RC time-constant. 

            - CMOS compatibility. 

  • Advantages of the technology: 

            - Area efficiency 

            - CMOS compatibility 

            - Power efficiency 

            - Simplified integration into existing semiconductor processes

Prototype Details

The patent describes the structure and operational method of the PD SOI MOSFET configured to emulate LIF neuron behavior.

Current Status of Technology

This invention is in its stage of testing and evaluation stage for the final objective.

Technology readiness level

3

Societal Impact

This technology could revolutionize artificial intelligence and neurocomputing by providing more efficient and scalable hardware for mimicking neuronal behavior, potentially leading to advancements in brain-inspired computing and smart systems.

Applications or Domain
  • Neuromorphic computing 
  • Artificial neural networks 
  • Brain-inspired computing systems 
  • Advanced computational devices

Geography of IP

Type of IP

Application Number

201721027169

Filing Date
Grant Number

525199

Grant Date
Assignee(s)
Indian Institute of Technology Bombay

IP Themes

**This IP is owned by IIT Bombay**