Abstract: A leaky cable is provided with a linear insulator and a metal layer formed on an outer peripheral surface of the insulator. A slot for leaking electromagnetic waves is formed through the metal layer between an inner peripheral surface and an outer peripheral surface of the metal layer, and the outer peripheral surface of the insulator is formed with unevenness that inhibits misalignment of the slot with respect to the insulator. The method of manufacturing the leaky cable includes forming an insulator composed of thermoplastic resin in a cylindrical shape, roughening an outer peripheral surface of the insulator, forming a metal layer on the outer peripheral surface of the insulator, and forming a slot through the metal layer between an inner peripheral surface and an outer peripheral surface of the metal layer. The slot is configured to leak electromagnetic waves to outside of the metal layer.

Abstract: A method for detecting a disconnection of a conductor of a cable includes performing an excitation to apply a periodic vibration at an arbitrary examined portion in a longitudinal direction of the cable, measuring a time-series resistance value of the conductor by the excitation, performing a frequency analysis for the measured time-series resistance value of the conductor, extracting a resistance value variation component at an exciting frequency corresponding to an operation period of the excitation from a result of the frequency analysis, and detecting the disconnection in the conductor at the examined portion based on a magnitude of the extracted resistance value variation component.

Abstract: The dielectric waveguide 1 transmits an electromagnetic wave with a frequency of 20 GHz or more and 200 GHz or less and includes a core 2 including a plurality of dielectric waveguide lines 21 that are bundled together and are composed of a dielectric made of a resin or quartz.

Abstract: A cable status management system for managing a wire-break progress of a cable used in a managed device is provided with a cable status management device having a cable status storage unit that stores a wire-break progress data indicating the wire-break progress in the cable, a device user-side data management device that belongs to a device user that uses the managed device, a device manufacturer terminal that belongs to a device manufacturer that manufactures the managed device, and a cable manufacturer terminal that belongs to a cable manufacturer that manufactures the cable. At least the device manufacturer terminal and the cable manufacturer terminal are configured to be accessible with the wire-break progress data stored in the cable status storage unit via a network.

Abstract: A disconnection detecting system for detecting disconnection of any of a plurality of wires included in a cable is provided. The disconnection detecting system includes: a bending mechanism configured to periodically apply force to the cable so as to cause the cable to reciprocate between a first bending state to be bent in one direction of clockwise and counterclockwise directions and a second bending state to be bent in the other direction; and a measuring apparatus configured to measure a resistance value of the cable, which varies on a time series basis in accordance with the reciprocation of the bending mechanism, and extract a component of a bending frequency for reciprocating between the first and second bending states once from frequency components included in time-series variation in the resistance value of the cable. The disconnection is detected on a basis of amplitude of the component of the bending frequency.

Abstract: Provided is an electric transmission cable module that has both a squelch function and an AGC function, and realizes a highly accurate function while suppressing an increase in chip cost.

Abstract: There is disclosed a communication cable module including: a conductive cable; a linear amplifier connected to the conductive cable; a detector for detecting presence or absence of an input signal of the conductive cable; a first circuit having a variable-current function; and a second circuit having a common-mode voltage regulating function, wherein when the input signal is not present, the variable-current function of the first circuit reduces an output current of the linear amplifier and the common-mode voltage regulating function of the second circuit regulates an output common-mode voltage of the linear amplifier.

Abstract: A connector for being arranged at an end of a cable includes a paddle card substrate for electrically connecting the cable to a connected device, plural device-side electrodes that are formed at an end portion of the paddle card substrate in plural rows in an insertion direction into the device and are to be electrically connected to the device, and a protective portion formed between the device-side electrodes adjacent in the insertion direction into the device to protect a surface of the paddle card substrate. The protective portion includes plural metal protective pads that are spaced from each other at a predetermined distance in the insertion direction.

Abstract: Provided is an electric transmission cable module that has both a squelch function and an AGC function, and realizes a highly accurate function while suppressing an increase in chip cost.

Abstract: A connector for being arranged at an end of a cable includes a paddle card substrate for electrically connecting the cable to a connected device, plural device-side electrodes that are formed at an end portion of the paddle card substrate in plural rows in an insertion direction into the device and are to be electrically connected to the device, and a protective portion formed between the device-side electrodes adjacent in the insertion direction into the device to protect a surface of the paddle card substrate. The protective portion includes plural metal protective pads that are spaced from each other at a predetermined distance in the insertion direction.

Abstract: There is disclosed a communication cable module including: a conductive cable; a linear amplifier connected to the conductive cable; a detector for detecting presence or absence of an input signal of the conductive cable; a first circuit having a variable-current function; and a second circuit having a common-mode voltage regulating function, wherein when the input signal is not present, the variable-current function of the first circuit reduces an output current of the linear amplifier and the common-mode voltage regulating function of the second circuit regulates an output common-mode voltage of the linear amplifier.

Abstract: In a transceiver module, where one end of a module substrate is inserted and connected to a concave portion of a plug connector and when one end face of the module substrate is touched to the inner periphery face forming the concave portion, a projection portion formed at the periphery of the concave portion of the plug connector is fitted to a notch portion of the module substrate.

Abstract: A device for deciding characteristics of a differential signal cable at a transmission rate of not less than 10 G baud includes a selector switch that changes a transmission rate or an output power of a test signal to be supplied to the differential signal cable, a signal transmitting circuit that generates a test signal at a different transmission rate or output power as one of the predetermined number of plurality of test signals according to the change of state of the selector switches and sends the generated test signal to the differential signal cable via one connector, and a signal receiving circuit that receives the test signal transmitted through the differential signal cable via the other connector and decides the success or failure of transmission of the test signal through the differential signal cable based on the received test signal and pre-stored data of the plurality of test signals.

Abstract: An active cable that is capable of reducing crosstalk is provided. A ground pattern is formed so as to sandwich one or both of a part of a transmission side transmission channel located at a side closer to the other side than a compensation circuit and a part of a reception side transmission channel located at a side closer to the other side than the compensation circuit.

Abstract: A communication module is further miniaturized to achieve an improvement in the mounting density of the communication module. A communication module includes a plug connector connected to a receptacle connector, and the plug connector has an insertion projection inserted into an insertion recess provided on the receptacle connector. The insertion projection has a board insertion portion into which an insertion end portion of a module board incorporated in the communication module is inserted formed therein, the insertion end portion is inserted into the board insertion portion, and first electrodes formed on the plug connector are electrically connected to the module board.

Abstract: A cable with connector includes a cable including at least two or more differential signal transmission cables for transmitting/receiving differential signals, a connector at both ends of the cable and including a built-in paddle card to electrically connect the differential signal transmission cables to a connected device. The paddle card includes a sending-side transmission path that is formed on the paddle card so as to transmit electrical signals input from the device to the differential signal transmission cables. The sending-side transmission path includes a common-mode reflecting transmission path that is in a common-mode impedance mismatched to a transmission path of the device so as to reflect common-mode signals input from the transmission path of the device.

Abstract: A communication module is further miniaturized to achieve an improvement in the mounting density of the communication module. A communication module includes a plug connector connected to a receptacle connector, and the plug connector has an insertion projection inserted into an insertion recess provided on the receptacle connector. The insertion projection has a board insertion portion into which an insertion end portion of a module board incorporated in the communication module is inserted formed therein, the insertion end portion is inserted into the board insertion portion, and first electrodes formed on the plug connector are electrically connected to the module board.

Abstract: In a transceiver module, where one end of a module substrate is inserted and connected to a concave portion of a plug connector and when one end face of the module substrate is touched to the inner periphery face forming the concave portion, a projection portion formed at the periphery of the concave portion of the plug connector is fitted to a notch portion of the module substrate.

Abstract: A device for deciding characteristics of a differential signal cable at a transmission rate of not less than 10 G baud includes a selector switch that changes a transmission rate or an output power of a test signal to be supplied to the differential signal cable, a signal transmitting circuit that generates a test signal at a different transmission rate or output power as one of the predetermined number of plurality of test signals according to the change of state of the selector switches and sends the generated test signal to the differential signal cable via one connector, and a signal receiving circuit that receives the test signal transmitted through the differential signal cable via the other connector and decides the success or failure of transmission of the test signal through the differential signal cable based on the received test signal and pre-stored data of the plurality of test signals.

Abstract: In a differential signal transmission cable, a surface of a skin layer is partially provided with shield conductors disposed at respective equidistant portions spaced apart in a direction orthogonal to a direction in which two signal conductors are arranged, the equidistant portions each being distant by the same distance from axial centers of the signal conductors. On the surface of the skin layer, the shield conductors are not provided in areas located in the direction in which the signal conductors are arranged, and spaces are created in these areas.