Sigrity, Inc. Patent applications |
Patent application number | Title | Published |
20130138417 | METHODS, SYSTEMS, AND COMPUTER-READABLE MEDIA FOR MODEL ORDER REDUCTION IN ELECTROMAGNETIC SIMULATION AND MODELING - Methods, systems, and computer readable media are disclosed for simulating a circuit. The method may comprise a step of providing a network model of the circuit having a plurality of ports, the plurality of ports being associated with one or more net pairs. The method may also comprise combining the plurality of ports into one or more groups based on the net pairs, each group corresponding to a net pair. In addition, the method may comprise calculating, for each group, one or more expansion elements, wherein the one or more expansion elements are associated with a shared property among all ports of the group. Moreover, the method may comprise simulating the circuit using a combination of the expansion elements calculated for each group. | 05-30-2013 |
20130138402 | Methods, Systems, and Computer-readable Media for Reference Impedance Adaptation in Electromagnetic Simulation and Modeling - Methods, systems, and computer-readable media for reference impedance adaptation are disclosed. The method may comprise a step of providing a network model of a circuit having at least one port, wherein the network model includes at least one network parameter, the network parameter being associated with the port and being defined based on a reference impedance of the port. The method may further comprise computing an input impedance of the port based on the network parameter. The method may also include defining a new reference impedance for the port based on the input impedance. Moreover, the method may include calculating a new network parameter of the network model based on the new reference impedance. | 05-30-2013 |
20130124181 | Methods, Systems, and Computer-readable Media for Improving Accuracy of Network Parameter in Electromagnetic Simulation and Modeling - Method, system, and computer readable medium are disclosed for analyzing electrical properties of a circuit. The method may comprise: providing a network model including at least one network parameter, the network parameter being defined over a frequency range; converting the network parameter into an intermediate network parameter having first and second portions; identifying first and second frequencies defining a frequency sub-range; replacing the first portion of the intermediate network parameter with a DC value when a frequency associated with the intermediate network parameter is lower than the first frequency; replacing the first portion of the intermediate network parameter with a transitional value when the frequency associated with the intermediate network parameter is within the frequency sub-range; and converting the intermediate network parameter with the replaced first portion into an updated network parameter. | 05-16-2013 |
20130006584 | Methods, Systems, and Computer-readable Media for Simulating Interconnects in Electronic Packaging Structures - Methods, systems, and computer-readable media for simulating an electronic packaging structure are disclosed. The methods include providing an electromagnetic simulation framework for simulating the electronic packaging structure that includes at least two planes and an interconnect transitional component. The framework includes solvers for simulation based on parallel-plate, strip line, and microstrip line modes. The method also includes defining ports of the component based on modes, computing a network function characterizing the properties of the component; and associating ports with solvers of the framework. | 01-03-2013 |
20120316857 | Method for Circuit Simulation - A computer-implemented method for simulating an electrical circuit. The method includes (a) setting a first temperature distribution in the electrical circuit, (b) performing an electrical simulation across the electrical circuit taking into consideration the first temperature distribution, (c) performing a thermal simulation across the electrical circuit taking into consideration a result of the electrical simulation, to obtain a second temperature distribution, and (d) determining whether a criterion for termination the simulation is met. If the criterion is met, terminate the simulation. If the criterion is not met, assign the second temperature distribution to the first temperature distribution, and repeat steps (b), (c), and (d). | 12-13-2012 |
20120269230 | METHOD FOR CALCULATING CAUSAL IMPULSE RESPONSE FROM A BAND-LIMITED SPECTRUM - A computer-implemented method for calculating a time-domain impulse response with improved causality based on a first spectrum in a frequency domain is disclosed. The first spectrum may be band-limited. The method may calculate a first time-domain impulse response from the first spectrum. The method may remove a non-causal portion of the first system time-domain impulse response to obtain a second time-domain impulse response, and calculate a second spectrum of the second time-domain impulse response. The method may further modify the second spectrum by adding a causal signal such that a difference between the second spectrum and the first spectrum is reduced. The method may also calculate the time-domain impulse response with improved causality from the modified second spectrum. | 10-25-2012 |