System for calculating resistive values for microelectronics cad
AssigneeEdxact
InventorsFrancois CHARLET, Mathias Silvant
Life of this patent
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Abstract
The invention relates to a method of calculating resistive values of an electronic circuit represented in the form of masks and connections, comprising: a) definition of the circuit in the form of a first list of electrical components and connections between them; b) identification of circuit entry and exit ports; c) selection of part of the resistive components of the circuit alone; d) production of a matrix of resistances of the resistive components alone selected in the previous step; and e) calculation of equivalent resistances.
Claims7
A method of calculating with a computer resistive values of an electronic circuit represented in the form of masks and connections, comprising:
- (a) defining the circuit in the form of a first list of electrical components and connections between them;
- (b) identifying of circuit entry and exit ports;
- (c) selecting part of the resistive components of the circuit alone;
- (d) producing a matrix of resistances of the selected part of the resistive components;
- and
- (e) calculating equivalent resistances.
A method of calculating with a computer resistive values of an electronic circuit represented in the form of masks and connections, comprising:
- (a) defining the circuit in the form of a first list of electrical components and connections between them;
- (b) identifying circuit entry and exit ports;
- (c) selecting part of the resistive components of the circuit alone;
- (d) producing a matrix of resistances of the selected part of the resistive components, comprising the steps of:
- defining a resistive network with Nc vertices and Nb branches, each branch being associated with a resistor Ri;
- constructing a tree T of the network with size Nt with the associated co-tree CT;
- establishing the meshed equations;
- establishing the matrix of resistances, wherein the matrix of resistances comprises:
- the vector of branch resistance vector RTT of tree T,
- the vector of resistances of co-tree T connected in parallel, and
- the vector of resistances of co-tree CT;
- and
- (e) calculation of equivalent resistances, comprising a reduction in the matrix of resistances by integrating cycle equations.
A device for calculating resistive values of an electronic circuit, represented in the form of masks and connections, comprising a computer programmed for:
- a) receiving the definition of the circuit in the form of a first list of electrical components and connections between them;
- b) identifying circuit entry and exit ports;
- c) selecting only some of the resistive components of the circuit alone;
- d) producing a matrix of selected resistances;
- and
- e) calculating equivalent resistances using said matrix of resistances.
Dependencies are inferred from the claim text.