Abstract: An artificial magnet conductor includes a dielectric medium, basic cells, each being formed on a side of a front surface of the dielectric medium, and including a conductive patch pattern and a conductive loop pattern formed with a predetermined gap with the conductive patch pattern, a frequency selective surface on which the basic cells are periodically arranged on the front surface of the dielectric medium, and a conductive layer formed on a side of a rear surface of the dielectric medium. A phase change from an incident wave to a reflected wave with respect to the dielectric medium is set as an addition value in which a first phase change in the gap is added to a second phase change between the basic cell of the dielectric medium and the conductive layer. A thickness of the dielectric medium is calculated using the addition value.

Abstract: A circuit substrate includes a core substrate, a reinforcing dielectric layer that is provided on one surface of the core substrate, a first electromagnetic band gap structure that is provided on one surface side of the reinforcing dielectric layer and reduces electromagnetic noise in a predetermined first frequency propagating through the core substrate, and an auxiliary pattern that is formed at a predetermined distance from an outer circumference of a pattern which forms the first electromagnetic band gap structure.

Abstract: An antenna has the following formed on a plane thereof: a vertical element formed in a vertical direction; a left horizontal element formed on a left side of the vertical element; a right horizontal element formed on a right side of the vertical element; a left short stub that connects the left horizontal element and a left upper corner of a ground pattern; and a right short stub that connects the right horizontal element and a right upper corner of the ground pattern. The right and left horizontal elements have a flat plate shape and a capacity hat.

Abstract: A circuit substrate includes a core substrate, a reinforcing dielectric layer that is provided on one surface of the core substrate, a first electromagnetic band gap structure that is provided on one surface side of the reinforcing dielectric layer and reduces electromagnetic noise in a predetermined first frequency propagating through the core substrate, and an auxiliary pattern that is formed at a predetermined distance from an outer circumference of a pattern which forms the first electromagnetic band gap structure.

Abstract: An artificial magnet conductor includes a dielectric medium, basic cells, each being formed on a side of a front surface of the dielectric medium, and including a conductive patch pattern and a conductive loop pattern formed with a predetermined gap with the conductive patch pattern, a frequency selective surface on which the basic cells are periodically arranged on the front surface of the dielectric medium, and a conductive layer formed on a side of a rear surface of the dielectric medium. A phase change from an incident wave to a reflected wave with respect to the dielectric medium is set as an addition value in which a first phase change in the gap is added to a second phase change between the basic cell of the dielectric medium and the conductive layer. A thickness of the dielectric medium is calculated using the addition value.

Abstract: An antenna has the following formed on a plane thereof: a vertical element formed in a vertical direction; a left horizontal element formed on a left side of the vertical element; a right horizontal element formed on a right side of the vertical element; a left short stub that connects the left horizontal element and a left upper corner of a ground pattern; and a right short stub that connects the right horizontal element and a right upper corner of the ground pattern. The right and left horizontal elements have a flat plate shape and a capacity hat.

Abstract: An inspection system is provided that can efficiently perform the management of data obtained from a plurality of apparatuses. An inspection system includes inspection apparatuses to inspect products that are produced in a factory, and a management server that is connected via a communication line to the inspection apparatuses. The inspection apparatus includes an apparatus-side inspection result DB (database) 14a. The apparatus-side inspection result DB stores the inspection result data, which is data representing the result of inspecting a substrate with the inspection apparatus 11a. The apparatus-side inspection result DB is a key-value database that is constituted by keys and values.

Abstract: An inspection item recognition unit references a component type table and recognizes inspection items necessary for specified components, an inspection means selection unit references an inspection machine capability table and selects an inspection means that performs inspection of each inspection item. By this processing, inspection menu information is generated, the inspection menu information associating, for each component, the component type and position information of the component with the inspection item performed on the component and information indicating the inspection means. Each inspection machine receives input of the inspection menu information and recognizes a component for which inspection by the inspection machine is defined, and generates inspection information by associating an inspection program with the position information of the component according to the component type of the component.

Abstract: There is provided a pulse generating circuit, which generates two pulses having a sign of amplitude different from each other, including: a step recovery diode of which electric potential of an anode and a cathode is respectively output as the pulses; a bias unit operable to select either a forward bias or a backward bias according to a given control signal and apply the selected bias to the step recovery diode; a forward current source operable to prescribe a forward current to be supplied to the step recovery diode when the forward bias is applied to the step recovery diode; and a backward current source operable to prescribe a backward current to be supplied to the step recovery diode when the backward bias is applied to the step recovery diode.

Abstract: There is provided a pulse generating circuit, which generates two pulses having a sign of amplitude different from each other, including: a step recovery diode of which electric potential of an anode and a cathode is respectively output as the pulses; a bias unit operable to select either a forward bias or a backward bias according to a given control signal and apply the selected bias to the step recovery diode; a forward current source operable to prescribe a forward current to be supplied to the step recovery diode when the forward bias is applied to the step recovery diode; and a backward current source operable to prescribe a backward current to be supplied to the step recovery diode when the backward bias is applied to the step recovery diode.

Abstract: A wide-spanning thermal head used in a printer comprises a plurality of radiator metal plates attached to a metal support plate and a plurality of head substrates formed from ceramics or the like, one each attached on top of each radiator plate. A construction in which the end faces of the head substrates are made to abut against each other requires highly precise work and involves technical difficulty. Any variation in the gap between the end faces will result in the occurrence of a white streak degrading the print quality. To avoid this, the invention provides a construction in which the radiator plates are attached to the support plate with a gap provided between the radiator plates in such a manner that the ends of the head substrate on each radiator plate protrude beyond the corresponding ends of the radiator plate by a protruding amount d.

Abstract: When the rear side of a heat resistant substrate having heating elements formed on the front side and a cooling board are adhered with an adhesive, the heat is accumulated in the substrate. To prevent this, the portions corresponding to the heating elements on the rear side are not adhered, but are protected with cooling compound, or adhesives are applied to both sides of the cooling compound, as it is known in prior parts, but they may cause uneven heat release from the substrate to the cooling board, or sacrifice the tacky action due to wetting of the adhesive with the cooling compound. In this invention, cooling compound or cooling adhesive is spread on the rear surface corresponding to the heating elements on the substrate, and an adhesive is applied to the parts separate from that area with grooves, thereby affixing the substrate and cooling member.

Abstract: When the support member and cooling member of the thermal head are made of aluminum, and the head substrate is made of ceramic, the difference in the coefficient of thermal expansion of the two is very large, and the aluminum is expanded in use, and the gap to the adjacent head substrate is increased to cause white stripes. In the invention, the materials are properly selected so that the coefficient of thermal expansion of the support member and cooling member and the coefficient of thermal expansion of the head substrate may be close to each other, and the head substrate is adhered to the cooling plate with a soft adhesive. Therefore, if a difference is caused in the amount of expansion between the head substrate and the cooling plate during use, it is suppressed to such an extent as to be absorbed by the elastic deformation of the soft adhesive.