Printed circuit analysis method and device
AssigneeEdxact
InventorStephane Guedon
Life of this patent
Estimating the term…
Abstract
A simulation method of an electronic circuit or a printed circuit, represented in the form of masks and connections, includes the definition of, on one hand, inputs and outputs of circuit networks, and, on the other, internal components of each network; the formation of a reduced model of each network; and the simulation of the network using this reduced model. In the event of an unsatisfactory simulation result, the modification of one or more networks, the formation of a second reduced model, and the simulation with said new reduced model, are performed. In the event of a satisfactory simulation result, production of the circuit can be undertaken.
Claims34
Simulation method of an electronic circuit or a printed circuit, represented in the form of masks and connections, comprising:
- a) defining, on one hand, inputs and outputs of circuit networks of the electronic circuit, and, on the other, internal components of each network,
- b) forming a reduced model of each network comprising:
- b1)•forming a conductance matrix or a resistance matrix, and also forming:
- a susceptance matrix;
- a susceptance and inductance matrix;
- or a susceptance, inductance and reluctance matrix, of inputs and internal components of the network,
- b2)•forming a first reduced digital model of said conductance or resistance matrix, and of said susceptance matrix;
- susceptance and inductance matrix;
- or susceptance, inductance and reluctance matrix,
- c) simulating the network using the first reduced digital model,
- d) in an event of an unsatisfactory simulation result, modifying part of the masks and/or connections of one or more networks, forming a second reduced digital model, and simulating with said new reduced model,
- e) in an event of a satisfactory simulation result, producing the circuit,
- wherein couplings between the circuit networks are low couplings, a network being subject to low coupling if the number ne of external nodes of the network is below the number ni of specific internal nodes of the network.
Method according to claim. 1, the circuit 30 containing analogue means.
Simulation device of an electronic circuit, represented in the form of masks and connections, comprising:
- a) means for defining, on one hand, inputs and outputs of networks of the circuit, and, on the other, the internal components of said networks,
- b) means for forming or calculating a reduced model of each network, comprising:
- b1)•means for forming or calculating a conductance matrix or a resistance matrix of the internal components, and also for forming or calculating a susceptance and inductance matrix, or a susceptance, inductance and reluctance matrix, of these inputs and internal components of the network,
- b2)•means for forming a first reduced digital model of the conductance or resistance matrix of the internal components, along with the susceptance and inductance or susceptance, inductance and reluctance matrix of said internal components,
- c) means for simulating the network using the first reduced digital model,
- d) in an event of an unsatisfactory simulation result, means for modifying part of the masks and/or connections of one or more networks, to form a second reduced digital model, and to perform a simulation with said new reduced model,
- wherein couplings between circuit networks are low couplings, a network being subject to low coupling if the number ne of external nodes of the network is below the number ni of specific internal nodes of the network.
Dependencies are inferred from the claim text.