Abstract: An arithmetic method by a computer according to the present embodiment includes model generating, execution processing, and electromagnetic interference noise generating. The model generating generates a model including a circuit model configured by a plurality of element models connected to each other and a motor model driven by the circuit model. The execution processing computes a motor current of the motor model generated in each of first calculating steps over time by using information on electrical characteristics of each element model. The electromagnetic interference noise generating generates electromagnetic interference noise in accordance with a frequency at a predetermined measurement point in the model in each of predetermined time segments in a measurement period, and generates an electromagnetic interference noise level at each frequency in the measurement period based on an electromagnetic interference noise level in accordance with the frequency in each of the time segments.

Abstract: A recording medium includes simulation data input into a computing device executing a simulation of a semiconductor device, wherein the simulation data includes part shape information describing a shape of a part included in a simulation target circuit, model information describing operation and connection information of the simulation target circuit, and symbol information of the part included in the simulation target circuit, and the computing device causes the part shape information, the model information, and the symbol information to correspond to each other to execute the simulation of the semiconductor device.

Abstract: A non-transitory computer readable recording medium includes simulation data input into a computing device executing a simulation of a semiconductor device, wherein the simulation data includes part shape information describing shape and terminal information of the semiconductor device, logical model information describing operation and connection information of an element in the semiconductor device, and functional block information describing positional information of a functional block in the semiconductor device, and the computing device causes the part shape information, the logical model information, and the functional block information to correspond to each other to execute the simulation of the semiconductor device.

Abstract: A recording medium includes simulation data input into a computing device executing a simulation of a semiconductor device, wherein the simulation data includes part shape information describing a shape of a part included in a simulation target circuit, model information describing operation and connection information of the simulation target circuit, and symbol information of the part included in the simulation target circuit, and the computing device causes the part shape information, the model information, and the symbol information to correspond to each other to execute the simulation of the semiconductor device.

Abstract: An arithmetic method according to the present embodiment comprises a model creation step, an execution processing step, and a thermal model creation step. The model creation step creates a circuit model in which a plurality of element models each having information on electrical characteristics of a switching element are connected to each other. The execution processing step computes, by using the information on the electrical characteristics of each of the element models, a power generated at each time step by switching of the element model with respect to a predetermined time-series input value in time series. The thermal model creation step creates a thermal model that outputs an output value based on an integrated value obtained by integrating the power generated at the each time step, in accordance with switching of the element model.

Abstract: A printed circuit board of an embodiment includes a board, a first ground plane provided on a first face of the board and having a first opening, a first wiring provided above the first ground plane, a second ground plane provided on a second face facing the first face of the board and having a second opening, a second wiring provided above the second ground plane, and a third wiring penetrating the board between the first opening and the second opening and connecting the first wiring and the second wiring. The third wiring is provided in the first opening and in the second opening when viewed from a direction perpendicular to the first face of the board.

Abstract: A printed circuit board of an embodiment includes a board, a first ground plane provided on a first face of the board and having a first opening, a first wiring provided above the first ground plane, a second ground plane provided on a second face facing the first face of the board and having a second opening, a second wiring provided above the second ground plane, and a third wiring penetrating the board between the first opening and the second opening and connecting the first wiring and the second wiring. The third wiring is provided in the first opening and in the second opening when viewed from a direction perpendicular to the first face of the board.

Abstract: An electronic device includes a main body having an aperture, a slot member disposed in the main body, the slot member having a slot exposed by the aperture and in which a memory card of a predetermined size is inserted and a connection terminal electrically connectable to a connection terminal of the memory card, and a coil disposed on a surface of the main body or within the main body so as to overlap with a surface of the slot member that is disposed to face a main surface of the memory card when the memory card is inserted in the slot.

Abstract: A coupler for proximity wireless communication primarily based on an electric induction field generated therein, includes a substrate, a ground layer formed on a first region of the substrate and surrounding a second region of the substrate on three sides of the second region, a fourth side of the second region being defined by an edge of the substrate, and a coupling element electrically isolated from the ground layer and formed on the second region of the substrate. The coupling element includes a first portion that extends adjacent to and along the edge of the substrate and a second portion that is electrically connected to the first portion, extends inwardly from the edge of the substrate, and includes an inductor.

Abstract: An electronic device includes a main body having an aperture, a slot member disposed in the main body, the slot member having a slot exposed by the aperture and in which a memory card of a predetermined size is inserted and a connection terminal electrically connectable to a connection terminal of the memory card, and a coil disposed on a surface of the main body or within the main body so as to overlap with a surface of the slot member that is disposed to face a main surface of the memory card when the memory card is inserted in the slot.

Abstract: An electronic device includes a main body having an aperture, a slot member disposed in the main body, the slot member having a slot exposed by the aperture and in which a memory card of a predetermined size is inserted and a connection terminal electrically connectable to a connection terminal of the memory card, and a coil disposed on a surface of the main body or within the main body so as to overlap with a surface of the slot member that is disposed to face a main surface of the memory card when the memory card is inserted in the slot.

Abstract: A coupler for proximity wireless communication primarily based on an electric induction field generated therein, includes a substrate, a ground layer formed on a first region of the substrate and surrounding a second region of the substrate on three sides of the second region, a fourth side of the second region being defined by an edge of the substrate, and a coupling element electrically isolated from the ground layer and formed on the second region of the substrate. The coupling element includes a first portion that extends adjacent to and along the edge of the substrate and a second portion that is electrically connected to the first portion, extends inwardly from the edge of the substrate, and includes an inductor.

Abstract: According to one embodiment, an electronic device includes a cover, a flexible board, a coupler, a communication module, and an output device. The cover covers at least a part of the flexible board. The coupler is on the flexible board and has flexibility. The communication module performs close proximity wireless communication by using the coupler. The output device outputs at least a part of data received by the coupler.

Abstract: An electronic device includes a main body having an aperture, a slot member disposed in the main body, the slot member having a slot exposed by the aperture and in which a memory card of a predetermined size is inserted and a connection terminal electrically connectable to a connection terminal of the memory card, and a coil disposed on a surface of the main body or within the main body so as to overlap with a surface of the slot member that is disposed to face a main surface of the memory card when the memory card is inserted in the slot.

Abstract: According to one embodiment, an electronic device includes a housing, a first antenna, a second antenna, a distributor and a communication module. The first antenna is in a first region of the housing. The second antenna is in a second region of the housing. The distributor is configured to distribute a same signal to the first antenna and the second antenna. The communication module is configured to perform communication by using the first antenna when an antenna of an external device approaches the first region and to perform communication by using the second antenna when the antenna of the external device approaches the second region.

Abstract: According to one embodiment, an antenna includes first and second coupling elements and first to fourth connecting elements. An electrical length between a middle point of the first coupling element and each of both open ends thereof is a first electrical length which is an odd multiple of ¼ of a wavelength ? corresponding to a frequency used for close proximity wireless communication. An electrical length between a middle point of the second coupling element and each of both open ends thereof is the first electrical length. An electrical length of each of the first to fourth connecting elements is a second electrical length which is an odd multiple of ¼ of the wavelength ?.

Abstract: According to one embodiment, the radio communication apparatus has a printed-wiring board, an electronic element, a first electrode, a second electrode, an antenna, and a molded member. The first electrode is conductor-connected to the printed-wiring board. The second electrode has the same size as the first electrode, is disposed parallel to the first electrode, and capacitively coupled to the first electrode. The molded member buries the printed-wiring board, the electronic element, the first electrode, the second electrode, and the antenna.

Abstract: According to one embodiment, an electronic device includes a housing, a first antenna, a second antenna, a distributor and a communication module. The first antenna is in a first region of the housing. The second antenna is in a second region of the housing. The distributor is configured to distribute a same signal to the first antenna and the second antenna. The communication module is configured to perform communication by using the first antenna when an antenna of an external device approaches the first region and to perform communication by using the second antenna when the antenna of the external device approaches the second region.

Abstract: According to one embodiment, an electronic device includes a cover, a flexible board, a coupler, a communication module, and an output device. The cover covers at least a part of the flexible board. The coupler is on the flexible board and has flexibility. The communication module performs close proximity wireless communication by using the coupler. The output device outputs at least a part of data received by the coupler.

Abstract: According to one embodiment, an electronic device includes a housing, antenna, and communication module. The housing includes a first region on which an external device is mountable. The first region includes a first side and a second side facing the first side. The antenna is arranged on the first region. The antenna includes at least a first antenna portion and second antenna portion. The first antenna portion is arranged in a first edge region along the first side within the first region. The second antenna portion is arranged in a second edge region along the second side within the first region. The communication module executes a close proximity wireless communication using the antenna.