Abstract: There is provided a low-cost wide band antenna having an ultra-wide band and high performance. The wide band antenna includes an antenna element to form a shape of a ridge waveguide open cross-section structure together with GND (10) when it is spread. The antenna element has a ridge element portion (13) corresponding to the ridge portion of the ridge waveguide and a radiation element portion (14) corresponding to the wall of the ridge waveguide and extending from the ridge element portion (13) for electromagnetic wave radiation. Moreover, the antenna element has an opposing auxiliary element (12) having the same shape and structure as the ridge element portion (13). The radiation element portion (14) has an end arranged on the GND (10). The ridge element portion (13) has a tip end connected to a power supply terminal (100).

Abstract: There is provided a high-frequency dielectric material that has a high relative permittivity, a high Q value, and a TCF property value close to zero (0) and can realize co-firing of the dielectric material with silver (Ag) and copper (Cu). The high-frequency dielectric material is characterized by comprising a composition of main constituent materials having a formulation of CaO: 1 mole, Nb2O5: (1??×?)/3 mole, ZnO: (1??)/3 mole, TiO2: ? mole, and Li2O: ?×(1??)/6 mole, wherein 0.65???0.75, 0.09???0.15, 0.066??×??0.100, and 0.15???0.35; and 1 to 5 parts by weight, based on 100 parts by weight of the composition of main constituent materials, of a sintering aid selected from the group consisting of oxides of copper (Cu), boron (B), lithium (Li), bismuth (Bi), and vanadium (V) and a mixture of two or more of the oxides.

Abstract: An antenna is adapted to be mounted on a vehicle body. An antenna base is formed with a first through hole. A first fixing screw is provided with a thread portion adapted to be inserted into a second through hole formed in the vehicle body via the first through hole, and a head portion continued from the thread portion and having a size larger than the second through hole. A receptacle is provided on the antenna base and receiving the head portion such that an axis of the first fixing screw is swingable relative to the vehicle body. A nut is adapted to be fitted with the thread portion so as to clamp the vehicle body together with the head portion.

Abstract: There is provided a dielectric ceramic composition having a high relative permittivity, a high frequency-quality factor, a small absolute value temperature coefficient, a low sintering temperature, and unreactivity with an internal conductor material. The dielectric ceramic composition comprises a main component represented by general formula xZnOxNlb2O5yCaTiO3zCaO, wherein 37?x?50, 10?y?60, 3?z?40, and x+y+z=100, and a boron (B) oxide as an accessory component in an amount of 0.3 to 3.0 parts by weight in terms of B2O3 based on the main component.

Abstract: In a planar antenna, a plate member is adapted to be electrically grounded. A radiating electrode is opposing the plate member with a gap and extending parallel to the plate member. A feeding pin is disposed at a center part of the radiating electrode, and adapted to feed power to the radiating electrode. At least one pair of short pins is electrically connecting the plate member and an outer edge of the radiating electrode at symmetrical positions relative to the feeding pin. The radiating electrode is formed with blank portions which are located at such positions that are on hypothetical straight lines connecting the feeding pin and the short pins.

Abstract: A conductive main block is formed with a through hole in which a dielectric member of a coaxial connector is inserted. A shell GND of the coaxial connector is secured on a surface of the main block. The core conductor peeled from the dielectric member is projected from an opposite surface of the main block. A conductive GND block includes a board receiving portion on which an end of the board is placed. The GND block can move relatively to the main block, by a guide member, in a linear direction parallel to the surface from which the core conductor is projected. By the relative movement of the main block and the GND block, the core conductor and the board receiving portion are caused to approach or be separated from each other so that the board can be inserted and sandwiched therebetween.

Abstract: A plate member is adapted to be electrically grounded. A first radiating electrode opposes the plate member with a gap and extending parallel to the plate member. A second radiating electrode opposes the plate member with a gap and extending parallel to the plate member. A feeding pin is connected to a center part of the first radiating electrode and a center part of the second radiating electrode. The feeding pin is adapted to feed power to the first radiating electrode and the second radiating electrode. A pair of first short-circuiting pins are electrically connecting the plate member and an outer edge of the first radiating electrode at symmetrical positions relative to the feeding pin. A pair of second short-circuiting pins are electrically connecting the plate member and both ends of the second radiating electrode. The first radiating electrode is formed with blank portions which are located at such positions that are on hypothetical straight lines connecting the feeding pin and the short pins.

Abstract: A conductive block is formed with a first face, a second face and a through hole connecting the first face and the second face. A contact probe is provided with a conductive pipe and a conductive plunger, retractably provided in at a first end of the pipe, the plunger being to be brought into contact with a device to be inspected. A first retainer includes a first insulative member through which the first end of the pipe is retained in the vicinity of the first face of the block, such that the pipe is coaxially held within the through hole while forming a gap between an outer periphery of the pipe and an interior wall of the through hole.

Abstract: A spring connector includes: an electrically-conductive pin; an electrically-conductive tube, having the pin slidably received therein, the tube holding the pin in such a condition that at least part of the pin projects from one end of the tube in a first direction, and the other end of the tube being open; and a housing, including a hole portion which can receive the tube, and a slit exposing at least part of an outer peripheral surface of the tube to an exterior, the housing having a first wall portion opposed to the other end of the tube and formed with a projecting portion projecting in the first direction and fitting to the other end of the tube. The at least part of the outer peripheral surface of the tube which is exposed from the slit is electrically connectable to a board.

Abstract: An antenna element 1 is formed such that a plurality of turning parts 13, 15, 17 are formed by being turned back in zigzag in parallel to a ground conductor film 2 while extending perpendicularly thereto and the lengths of segments 12, 14, 16, 18 between the turning parts are shorter on a side of the ground conductor film 2 (a side of a feeding part 4) and increase gradually as the segments are away from the ground conductor film 2. The turning parts of the antenna element 1 are formed such that the antenna resonates at two or more frequency bands, and has a fractional bandwidth of 4% or more of its frequency in a first frequency band and a fractional bandwidth of 15% or more of its frequency in a second frequency band by adjusting the lengths L1, L2 and L3 of respective segments and the intervals d1, d2 and d3 between adjacent segments. Consequently, a wideband antenna is realized in two or more multi-frequency bands, for example 2.4 to 2.5 GHz and 5 to 6 GHz, by using a single folded antenna.

Abstract: An insulative block has a first face adapted to oppose a board on which an inspection circuit is arranged and a second face adapted to oppose a device to be inspected. The insulative block is formed with through holes each of which communicates the first face and the second face. A conductive plating layer is formed on the first face, the second face, and an inner face of at least one of the through holes. Each of contact probes includes a conductive tubular body held in an associated one of the through holes and a plunger which is retractably projected from one end of the tubular body and is adapted to come in contact with a terminal of the device. The contact probes includes a first group of contact probes adapted to come in contact with terminals of a first circuit in the device, and a second group of contact probes adapted to come in contact with terminals of a second circuit in the device.

Abstract: The present invention provides an antenna for multiple bands employing a single antenna element 10, capable of operating in multiple frequency bands, and ideal for size reduction purposes. One end A of an antenna element 10 is electrically connected to a feeding point 12 and intermediate points B and C and the other end thereof is electrically connected via switches SWb, SWc, and SWd to a ground conductor 14. The electrical lengths of the antenna element 10 from the terminal to the intermediate points B and C plus connection lines from these points via the switches SWb and SWc to the ground conductor 14 and the electrical length from the one end A to the other end D plus a connection line from the other end via the switch SWd to the ground conductor 14 are set to be capable of resonating different desired frequency bands. By closing one of the switches SWb, SWc, and SWd, one of the desired frequencies can be selected and the antenna can resonate with that frequency.

Abstract: A relay connector connects a terminal of a connector to be inspected provided on a board for inspection to a measuring instrument. The relay connector includes: a pin block; a floating guide, arranged so as to approach and separate with respect to the pin block and resiliently urged in a separating direction, the floating guide formed with a guide hole; a plurality of probes, each of which is provided in the pin block so as to be opposed to the terminal of the connector to be inspected having been inserted into the guide hole; and a pressure operating member, adapted to be operated between an open state in which the connector to be inspected is allowed to be inserted into the guide hole in the floating guide, and a pressed state in which the connector to be inspected having been inserted into the floating guide is pressed toward the pin block.

Abstract: A relay connector electrically connects terminals which are arranged in two rows on a connector to be inspected provided on a board for inspection to a measuring instrument. The relay connector includes first probes, mounted on a first pin block so as to be contacted with one row of the terminals arranged on the connector to be inspected, and second probes, mounted on a second pin block so as to be contacted with the other row of the terminals arranged on the connector to be inspected. The first and second pin blocks can approach and separate with respect to each other and a distance between the first and second pin blocks can be adjusted and fixed, so that the first and second probes are respectively contacted with the terminals which are arranged in two rows on the connector to be inspected.

Abstract: A plug member is adapted to be fitted into a socket member in a first direction. The plug member includes: a plug body, formed with a plug groove extending in a second direction perpendicular to the first direction; and plug contacts each having a blade portion. A pressing member includes a first part extending in the first direction, and a second part extending in a third direction orthogonal to the first direction and the second direction. Each of sheathed wires includes a conductive core wire and an insulative first sheath covering the core wire. A tip end portion of the first part of the pressing member is formed with first grooves arranged in the second direction. One end of the second part of the pressing member is formed with second grooves arranged in the second direction.

Abstract: A contact probe includes a plurality of probes, each of the probes including: an conductive tube; an conductive plunger, contained in at least one end side of the tube, and having a distal end part protruding outward from the tube in an axial direction of the tube; and a coil spring, contained in the tube, and adapted to elastically urge the plunger outward. The plural probes are arranged in a first direction in a socket comprised of insulating material. A cross section of the tube in a direction perpendicular to the axial direction of the tube has a greater size in a direction different from the first direction than a size in the first direction.

Abstract: A base member is adapted to be mounted on a vehicle body. A proximal end of a rod-shaped antenna body is pivotably provided on the base member. The antenna body includes an antenna element. A first conductive member is disposed in the base member and provided with a first bracket-shaped portion having elasticity. A second conductive member is electrically connected to the antenna element and provided with a second bracket-shaped portion. The second conductive member is pivotably fitted with the first conductive member while opposite outer faces of the second bracket-shaped portion is brought into elastic contact with opposing inner faces of the first bracket-shaped portion.