摘要:
The electromagnetic field intensity of an electromagnetic wave radiating from a multilayer substrate is correctly computed. A radiating electromagnetic wave analysis apparatus comprises a signal layer electric current distribution computation unit for obtaining the distribution of an electric current flowing through a signal layer in a distributed constant line approximation method or a transmission line analysis method; a multilayer substrate electric current distribution computation unit for computing the distribution of an electric current of an entire multilayer substrate in a moment method based on the distribution of the electric current obtained by the signal layer electric current distribution computation unit; and an electromagnetic field intensity computation unit for computing the electromagnetic field intensity of an electromagnetic wave radiating from a multilayer substrate based on the distribution of the electric current of the entire multilayer substrate computed by the multilayer substrate electric current distribution computation unit. The radiating electromagnetic wave analysis apparatus establishes a modelling method for quantitatively analyzing the state of the electric current flowing through a wave source and load and then flowing into a power supply layer and a ground layer.
摘要:
An electromagnetic field intensity calculating device calculates according to a moment method the intensities of the electric field and the magnetic field radiated by an electric circuit device having metal portions and dielectric portions. The electromagnetic field intensity calculating device comprises an input unit for inputting the precise structure of the electric circuit device including the structure of the metal portions and the structure of the dielectric portions; a deriving unit for deriving simultaneous equations based on the structure of the electric circuit device input to the input unit, a calculating unit for calculating the electric current flowing through the metal portions and the equivalent electric current and the equivalent magnetic current flowing through the dielectric portions by solving the simultaneous equations; and a computation unit for calculating the intensity of the electric field and the magnetic field radiated by the electric circuit device based on calculation results obtained by the calculating unit.
摘要:
In a calculation apparatus for calculating intensity of an electromagnetic field radiated from an electronic circuit device, the apparatus includes: an input data file for storing structural information of the device; an input unit for receiving structural information of the device to be analyzed from the input data file; a section unit for dividing the device into applicable sections for a distributed constant circuit method and inapplicable sections for the method by analyzing the structural information of the device; a first calculation unit for calculating current distribution at the applicable sections using the distributed constant circuit method; a second calculation unit for calculating current distribution at the inapplicable sections using a moment method and using the current distribution obtained by the first calculation unit; a third calculation unit for calculating the intensity of electromagnetic fields radiated from the device based on the current distributions obtained from the first and second calculation unit; and an output unit for outputting the calculated intensity of the electromagnetic fields to an output data file.
摘要:
In order to improve the speed of an electro-magnetic field intensity calculation process in a device capable of performing the cooperation process of a circuit analysis and an electro-magnetic wave analysis, the present invention comprises a determination unit 2 for determining whether a component constituting an electric circuit contained in an analysis target, an analysis processing unit 3 for analyzing an electro-magnetic wave emitted from the analysis target, using an analysis target model containing a linear component if all components are linear, and a cooperation process unit 4 for dividing the analysis target into a circuit analysis model to which a circuit analysis method should be applied, an electro-magnetic wave analysis model to which an electro-magnetic wave analysis should be applied and one or more ports for combining the two models and analyzing an electro-magnetic wave emitted from the analysis target, if one or more components are non-linear.
摘要:
The apparatus of the present invention has an interface circuit which returns power in H-level output state, a first power circuit supplying a first supply voltage, and a second power circuit supplying a second supply voltage. The second power circuit receives the entered first supply voltage from the first power circuit, and in a first operation mode (L-level output condition), brings the first supply voltage of 3.3 V down to the second supply voltage of 1.5 V and supplies same to the interface circuit. In a second operation mode (H-level output condition) of the load circuit, a current output from the load circuit is brought up to the first supply voltage of 3.3 V and feeds same back to the first power circuit.
摘要:
An apparatus analyzing electromagnetic waves radiated from an appliance using a net pattern of the appliance and having a coordinates data extracting unit extracting, from net pattern information, coordinates data defining the coordinates of each of terminal points of a plurality of segments constituting the net pattern; and a smoothing unit for dividing the net pattern, based on the extracted coordinates data, into plural object sections, each of a length not greater than a predetermined maximum length, and smoothing the net pattern for each object section, by replacing plural segments in each object section with a single, or a plurality of, straight lines smaller in number than the number of the segments. The electromagnetic field intensity of the electromagnetic waves is calculated on the basis of coordinates data for which smoothing is completed.
摘要:
In order to improve the speed of an electro-magnetic field intensity calculation process in a device capable of performing the cooperation process of a circuit analysis and an electro-magnetic wave analysis, the present invention comprises a determination unit 2 for determining whether a component constituting an electric circuit contained in an analysis target, an analysis processing unit 3 for analyzing an electro-magnetic wave emitted from the analysis target, using an analysis target model containing a linear component if all components are linear, and a cooperation process unit 4 for dividing the analysis target into a circuit analysis model to which a circuit analysis method should be applied, an electro-magnetic wave analysis model to which an electro-magnetic wave analysis should be applied and one or more ports for combining the two models and analyzing an electro-magnetic wave emitted from the analysis target, if one or more components are non-linear.
摘要:
A simulation device and method to simulate the electric current flowing in electronic devices using the moment method, and to execute accurate simulation processing when the electronic device has an amplifier. An allocating device allocates defining dipoles to the input terminal and output terminal of an amplifier of an electronic device for the purpose of deriving the electric current flowing in the element. A creating device creates a simultaneous equation of the moment method having a form such that the amplifier input impedance is inserted into the input terminal dipole allocated by the allocating device, and the amplifier output impedance, or its inverse, and a dependent energy source responding to the amplification characteristics of the amplifier are inserted into the output terminal dipole allocated by the allocating device. A solving device solves the simultaneous equation of the moment method created by creating device.
摘要:
An apparatus provided with a setting unit for selecting a frequency spectrum to be processed from among a plurality of frequency spectrums contained in an angle-modulated wave source and setting one or a plurality of sample frequencies from among the spectrums, a calculating unit for calculating an intensity of an electromagnetic field radiated from an electronic apparatus by analysis in the frequency domain under the moment method or the like using the sample frequency set by the setting unit as the analyzing frequency, and a computing unit for calculating a physical amount to be calculated other than the physical amount calculated by the calculation unit in the frequency domain of the frequency spectrum to be processed, by using a proportional operation, from the physical amount calculated by the calculating unit and the wave source value of the frequency spectrum to be processed.