US 2012/0259598 A1Published application

Adaptive Redundancy-Extraction for 3D Electromagnetic Simulation of Electronic Systems

AssigneePhysware, Inc.

InventorsVikram Jandhyala, Swagato Chakraborty, Dipanjan Gope

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Abstract

Redundancy extraction in electromagnetic simulation of an electronic device/system includes discretizing first and second spaced conductive layers of a computer model of an electronic device/system into first and second meshes M1 and M2. For each edge between cells of each mesh, a current flow across the edge in response to application of an exemplary bias to the geometry is determined. A square impedance matrix Z* is determined which, for each instance of equal magnitude and opposite direction current flows (EMODCF) in edges E1 and E2 of M1 and M2, has one less row and one less column than the total number of edges in M1 and M2. A voltage column vector V* is also determined which, for each instance of EMODCF, has one less row than the total number of edges in M1 and M2. A current column vector [I*]=[V*]/[Z*] is then determined.

Claims21

Dependent claims

A computer-implemented method of redundancy extraction in electromagnetic simulation of an electronic device/system comprising:

(a) a processor of a computer discretizing first and second spaced conductive layers of a computer model of a 3D geometry of an electronic device/system into a first mesh M1 and second mesh M2, wherein each mesh includes a plurality of cells, and each pair of adjacent cells in each mesh is separated by an edge;
(b) for each mesh, the processor estimating a magnitude and direction of current flow across each edge thereof in response to application of an exemplary bias to the geometry;
(c) the processor determining at least one instance where one edge of M1 and one edge of M2 having a predetermined spatial relation to each other have equal magnitude and opposite direction current flows (EMODCF), wherein said at least one instance of EMODCF includes an edge E1 of M1 and an edge E2 of M2;
(d) the processor determining a square impedance matrix Z* which, for each instance of EMODCF in step (c), has one less row than the total number of edges in M1 and M2 and which, for each instance of EMODCF in step (c), has one less column than the total number of edges in M1 and M2;
(e) the processor determining a voltage column vector V* which, for each instance of EMODCF in step (c), has one less row than the total number of edges in M1 and M2;
and
(f) the processor determining a current column vector [I*]=[V*]/[Z*].

4 more elements

A system of redundancy extraction in electromagnetic simulation of an electronic device comprising:

means for discretizing first and second spaced conductive layers of a computer model of a 3D geometry of an electronic device into a first mesh M1 and second mesh M2, wherein each mesh includes a plurality of cells, and each pair of adjacent cells in each mesh is separated by an edge;
means for estimating for each mesh a direction of current flow across each edge thereof in response to application of an exemplary bias to the geometry;
means for determining at least one instance where one edge of M1 and one edge of M2 having a predetermined spatial relation to each other have equal magnitude and opposite direction current flows (EMODCF), wherein said at least one instance of EMODCF includes an edge E1 of M1 and an edge E2 of M2;
means for determining a square impedance matrix Z* having a number of columns i and a number of rows j, wherein for each instance of EMODCF, the number of rows j is one less than the total number of edges in M1 and M2 and wherein for each instance of EMODCF, the number of columns i is one less than the total number of edges in M1 and M2;
means for determining a voltage column vector V* which, for each instance of EMODCF, has one less row than the total number of edges in M1 and M2;
and
means for determining a current column vector [I*]=[V*]/[Z*].

4 more elements

A computer readable medium having stored thereon instructions which, when executed by a processor of a computer, cause the processor to perform the steps of:

(a) discretize first and second spaced conductive layers of a computer model of a 3D geometry of an electronic device/system into a first mesh M1 and second mesh M2, wherein each mesh includes a plurality of cells, and each pair of adjacent cells in each mesh is separated by an edge;
(b) estimate for each mesh a magnitude and direction of current flow across each edge thereof in response to application of an exemplary bias to the geometry;
(c) determine at least one instance where one edge of M1 and one edge of M2 having a predetermined spatial relation to each other have equal magnitude and opposite direction current flows (EMODCF), wherein said at least one instance of EMODCF includes edge E1 of M1 and edge E2 of M2;
(d) determine a square impedance matrix Z* which, for each instance of EMODCF in step (c), has one less row than the total number of edges in M1 and M2 and which, for each instance of EMODCF in step (c), has one less column than the total number of edges in M1 and M2;
(e) determine a voltage column vector V* which, for each instance of EMODCF in step (c), has one less row than the total number of edges in M1 and M2;
and
(f) determine a current column vector [I*]=[V*]/[Z*].

4 more elements

Dependencies are inferred from the claim text.