Resistive Network Calculation for Microelectronics CAD
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Solution Overview
Problem
Current methods for calculating resistive values in integrated circuits are either resource-intensive and prone to manual errors or offer highly uncertain estimates, making them unsuitable for precise calculations, especially for smaller technological nodes and larger networks.
Innovation Solution
A method and system that break down the resistive network into vertices and branches, construct a tree and co-tree, write meshed equations, and calculate equivalent resistances using a matrix reduction approach, allowing for automated and precise resistance calculations between input and output ports.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If complete simulation with current measurement and voltage injection is used to calculate resistive values, then measurement precision is improved, but productivity deteriorates due to considerable simulation time and manual manipulation
Solution Approach 1:
The patent segments the electrical network into purely resistive components and other components, creating a dedicated resistive network analysis. This segmentation allows the resistive values to be calculated independently using specialized algorithms (nodal analysis, mesh analysis) without requiring complete circuit simulation, thereby improving both precision and productivity by focusing computational resources only on the resistive portion of the circuit.
2Reliability
If complete simulation is performed to calculate equivalent resistances, then reliability is improved, but loss of time increases due to multiple simulations and manual calculations
Solution Approach 1:
The patent replaces the mechanical simulation process (iterative voltage injection and current measurement) with mathematical analysis methods. By using nodal analysis, mesh analysis, or equivalent transformation algorithms, the system directly calculates resistive values through mathematical equations rather than time-consuming simulations, maintaining reliability while dramatically reducing time loss.
3Productivity
If simplified approach is used to estimate equivalent resistances, then productivity is improved, but measurement precision deteriorates due to high uncertainty
Solution Approach 1:
The patent changes the approach from estimating resistive values using simplified assumptions to calculating them using precise mathematical parameters. By applying nodal analysis (solving systems of linear equations), mesh analysis (using Kirchhoff's laws), or equivalent transformation parameters, the system achieves both high productivity and high measurement precision, eliminating the trade-off between speed and accuracy.
4Adaptability or versatility
If manual manipulation is used for simulation and calculation, then adaptability is improved, but reliability deteriorates due to common manual manipulation errors
Solution Approach 1:
The patent implements automated calculation systems that perform resistive value computations without manual intervention. The software automatically identifies the resistive network, selects appropriate analysis methods (nodal, mesh, equivalent transformation), executes calculations, and produces results. This self-service approach eliminates manual manipulation errors while maintaining design flexibility through programmable adaptability to different circuit configurations.
Data Source
AI summary
A method for calculating resistive values of an electronic circuit represented in the form of masks and connections includes defining the circuit in the form of a first list of electrical components and connections between them, identifying circuit entry and exit ports, selecting part of the resistive components of the circuit alone, producing a matrix of resistances of the resistive components alone selected in the previous step, and calculating equivalent resistances.