Abstract: In a receptacle cage, a front EMI finger in a tubular shape serving as a first shield member is provided on the entire periphery of a substantially rectangular module slot. In addition, a gap between the peripheral edge of a slot of a cover, into which a plug connector for the optical module connected to a receptacle connector in a receptacle connector accommodating portion is inserted, and a peripheral surface of a plug connector and a gap between a lower surface of the cover and a surface, on which a printed wiring board is mounted, are shielded by an EMI gasket serving as a second shield member and an EMI gasket serving as a third shield member, respectively.

Abstract: On a predetermined mounting surface of a surface (22A) of a flexible wiring board (22), a flexible wiring board pressing plate (28) which presses the mounting surface against a lower cover (12) is provided at a position immediately below a first radiation block (24) and a pressing sheet (26). The flexible wiring board pressing plate (28) has five pairs of projections (28PA and 28PB) respectively arranged in lines. The projections (28PA and 28PB) are formed to intersect conductive patterns (22ACP) at predetermined intervals.

Abstract: In a receptacle cage, a front EMI fingers in a tubular shape serving as a first shield member is provided on the entire periphery of a substantially rectangular module slot. In addition, a gap between outer peripheral surfaces of an upper case as well as a lower plate of an optical module connected to a receptacle connector in a receptacle connector accommodating portion and an inner surface of the cage is shielded by a top EMI fingers serving as a second shield member and side EMI fingers serving as third shield members. Moreover, the lower plate comes into contact with a bottom wall portion which is grounded.

Abstract: An optical module receptacle assembly includes a receptacle cage to detachably house an optical module, a receptacle connector housed in a receptacle connector accommodating portion of the receptacle cage, and a connector cover covering the receptacle connector. A given clearance CLE, which is greater than a clearance CLD being set smaller than a clearance CLA, is formed between an upper surface of a tip end portion of a plug connector of the optical module and an inner peripheral surface of a slot of the receptacle connector.

Abstract: A receptacle connector includes: a housing which is made of a insulative resin, and which defines a housing space having an opening portion through which a connection target object is to be inserted; plural contacts which are made of a metal, and which include plural signal line contacts and plural ground contacts housed in the housing space so as to be arranged adjacent to each other; and plural conductive members which are made of a conductive resin, and which are disposed correspondingly with the plural ground contacts so that each of the plural conductive members is electrically connected to a corresponding one of the plural ground contacts.

Abstract: In a receptacle cage, a front EMI fingers in a tubular shape serving as a first shield member is provided on the entire periphery of a substantially rectangular module slot. In addition, a gap between outer peripheral surfaces of an upper case as well as a lower plate of an optical module connected to a receptacle connector in a receptacle connector accommodating portion and an inner surface of the cage is shielded by a top EMI fingers serving as a second shield member and side EMI fingers serving as third shield members. Moreover, the lower plate comes into contact with a bottom wall portion which is grounded.

Abstract: An optical module receptacle assembly includes a receptacle cage to detachably house an optical module, a receptacle connector housed in a receptacle connector accommodating portion of the receptacle cage, and a connector cover covering the receptacle connector. A given clearance CLE, which is greater than a clearance CLD being set smaller than a clearance CLA, is formed between an upper surface of a tip end portion of a plug connector of the optical module and an inner peripheral surface of a slot of the receptacle connector.

Abstract: An antenna device is provided with a first connecting electrode, a first tunnel diode, a first antenna member and a fixed electrode. The first connecting electrode is configured to be connected to a fixed potential via a load. The first tunnel diode has a pair of electrodes. One of the electrodes of the first tunnel diode is connected to the first connecting electrode, and the other electrode of the first tunnel diode is connected to the first antenna member. The first antenna member has a conductive property and includes a first portion and a second portion. The first portion of the first antenna member is connected to the other electrode of the first tunnel diode. The fixed electrode is connected to the second portion of the first antenna member. The fixed electrode is configured to be connected to the fixed potential.

Abstract: A receptacle connector used as an electrical connector. The receptacle connector includes: a housing in which a receiving space is formed, a connection target being inserted in the receiving space; a plurality of contacts being arranged parallel to one another, having a plurality of signal line contacts and a plurality of ground contacts, and being placed with every two adjacent signal line contacts for transmitting signals interposed between two ground contacts; a supporting member made of an electrically-insulating synthetic resin material, and configured to integrally support and fix thereto the plurality of contacts; and a common contact made of a conductive resin material and configured to be provided with a certain gap from each of the plurality of ground contacts to electrically connect the plurality of ground contacts. The plurality of contacts integrated together by the supporting member are received in the receiving space.

Abstract: A receptacle connector used as an electrical connector. The receptacle connector includes: a housing in which a receiving space is formed, a connection target being inserted in the receiving space; a plurality of contacts being arranged parallel to one another, having a plurality of signal line contacts and a plurality of ground contacts, and being placed with every two adjacent signal line contacts for transmitting signals interposed between two ground contacts; a supporting member made of an electrically-insulating synthetic resin material, and configured to integrally support and fix thereto the plurality of contacts; and a common contact made of a conductive resin material and configured to be provided with a certain gap from each of the plurality of ground contacts to electrically connect the plurality of ground contacts. The plurality of contacts integrated together by the supporting member are received in the receiving space.

Abstract: In a receptacle cage, a front EMI fingers in a tubular shape serving as a first shield member is provided on the entire periphery of a substantially rectangular module slot. In addition, a gap between outer peripheral surfaces of an upper case as well as a lower plate of an optical module connected to a receptacle connector in a receptacle connector accommodating portion and an inner surface of the cage is shielded by a top EMI fingers serving as a second shield member and side EMI fingers serving as third shield members. Moreover, the lower plate comes into contact with a bottom wall portion which is grounded.

Abstract: A printed circuit board is pinched between end faces of a metal receptacle support member and a metal backup member in an optical-module plug portion, the flexible wiring board having a light emitting/receiving element unit, a reception chip portion, a driver element, and the like on a common planar surface thereof, such that the end face of the metal receptacle support member is in contact with a surface of the printed circuit board and that the driver element is in contact with the metal backup member.

Abstract: A receptacle connector of the present invention is used as an electrical connector configured to connect two circuit boards. The receptacle connector includes: a housing in which a receiving space is formed, a connection target being inserted in the receiving space; a plurality of contacts being arranged parallel to one another, having a plurality of signal line contacts and a plurality of ground contacts, and being placed with every two adjacent signal line contacts for transmitting signals interposed between two ground contacts; a supporting member made of an electrically-insulating synthetic resin material, and configured to integrally support and fix thereto the plurality of contacts; and a common contact made of a conductive resin material and configured to electrically connect the plurality of ground contacts together among the plurality of contacts. The plurality of contacts integrated together by the supporting member are received in the receiving space.

Abstract: A receptacle connector of the present invention is used as an electrical connector configured to connect two circuit boards. The receptacle connector includes: a housing in which a receiving space is formed, a connection target being inserted in the receiving space; a plurality of contacts being arranged parallel to one another, having a plurality of signal line contacts and a plurality of ground contacts, and being placed with every two adjacent signal line contacts for transmitting signals interposed between two ground contacts; a supporting member made of an electrically-insulating synthetic resin material, and configured to integrally support and fix thereto the plurality of contacts; and a common contact made of a conductive resin material and configured to electrically connect the plurality of ground contacts together among the plurality of contacts. The plurality of contacts integrated together by the supporting member are received in the receiving space.

Abstract: The present invention provides a card edge connector as a high-speed differential signal connector configured to equalize electric potentials of ground contacts adjacent to signal line contacts, and thus to reduce crosstalk between adjacent signal line contacts. The card edge connector serves as a female connector in which multiple signal line contacts and multiple ground contacts are arranged in parallel in at least one row. In the card edge connector, the signal line contacts and the ground contacts are arranged in a way that every two signal line contacts for high-speed signals to send and return respectively therethrough are interposed between two ground contacts, and all of the multiple ground contacts arranged in the one row are electrically connected to one another by use of a common contact.

Abstract: A receptacle (20) detachably accommodating a connector plug (34) connected to optical fibers (32) is rotatably supported by a shaft (14) provided in an installation table (10). The receptacle (20) is biased by a leaf spring (16) for biasing opposite ends of the shaft (14) in one direction. A locking/unlocking mechanism for selectively locking or unlocking the receptacle (20) connected with the connector plug (34) relative to the installation table (10) and a locking mechanism fixing portion (12) includes a locking nib (30Ra) of a lock releasing button (30R), a locking nib (30La) of a lock releasing button (30L), locking nib receiving portions (12na, 12nb) and a coil spring (31).

Abstract: The high-density connector for high-speed transmission comprises a female connector having a connector body formed with a plurality of contact accommodating concave portions and a plurality of female contacts, and a male connector having a connector body and a plurality of male contacts. The female contacts are arranged in zigzag in a plurality of rows such that adjacent female contacts in a front-back direction are diagonally positioned to each other. Contact portions of the male contacts are arranged in zigzag in a plurality of rows corresponding to the arrangement of the female contacts. Among the rows of the female contacts, two adjacent rows in the front-back direction are rows of a pair of signal line contacts, and one row on either side in the front-back direction of the pair of signal line contacts is a row of a ground contact.

Abstract: An electrode terminal supporting body fixed on a printed wiring board and an anisotropic conductive sheet which is positioned on the electrode terminal supporting body and on which a semiconductor device is placed are provided between first and second stiffening plates. The first and second stiffening plates are fastened by machine screws with the electrode terminal supporting body, the anisotropic conductive sheet, and the printed wiring board interposed therebetween.

Abstract: The present invention provides a card edge connector as a high-speed differential signal connector configured to equalize electric potentials of ground contacts adjacent to signal line contacts, and thus to reduce crosstalk between adjacent signal line contacts. The card edge connector serves as a female connector in which multiple signal line contacts and multiple ground contacts are arranged in parallel in at least one row. In the card edge connector, the signal line contacts and the ground contacts are arranged in a way that every two signal line contacts for high-speed signals to send and return respectively therethrough are interposed between two ground contacts, and all of the multiple ground contacts arranged in the one row are electrically connected to one another by use of a common contact.

Abstract: The high-density connector for high-speed transmission comprises a female connector having a connector body formed with a plurality of contact accommodating concave portions and a plurality of female contacts, and a male connector having a connector body and a plurality of male contacts. The female contacts are arranged in zigzag in a plurality of rows such that adjacent female contacts in a front-back direction are diagonally positioned to each other. Contact portions of the male contacts are arranged in zigzag in a plurality of rows corresponding to the arrangement of the female contacts. Among the rows of the female contacts, two adjacent rows in the front-back direction are rows of a pair of signal line contacts, and one row on either side in the front-back direction of the pair of signal line contacts is a row of a ground contact.