Abstract: The object of the present invention is to provide an electrical connector which makes it possible for the contacts to electrically contact each other with a high contact pressure even when the contacts are made smaller and shorter. Contacts 40 and 80 which electrically contact each other are respectively secured in housings of a plug connector 20 and a cap connector 60, with the contacts being positioned in two rows in each connector. When the plug connector 20 and cap connector 60 are connected, first and second spring members 42 and 44 of the contacts 40 are clamped between wall surfaces 38a and 38b of the housing 30 and the contact sections 82 of the contacts 80, so that the contacts 40 and 80 are springably pressed strongly against each other.

Abstract: An electrical connector for terminating flat cable of the type having a plurality of signal and ground conductors in parallel alignment comprises a housing which holds a plurality of signal contacts and a ground bus. Each of the signal contacts has a signal conductor termination slot configured for insulation displacement termination of a respective said signal conductor. The ground bus has a plurality of ground conductor termination slots each configured for insulation displacement termination of a respective said ground conductor, and at least one bypass slot configured to permit at least one of said signal conductors to pass through said ground bus without termination thereto. The signal conductor termination slots, the ground conductor termination slots and the at least one bypass slot are arranged such that the plurality of signal and ground conductors reside in a common plane in the connector after termination thereto.

Abstract: A touch screen includes a transmitter capable of delivering an acoustic signal to the touch screen and a receiver adapted to detect acoustic signals on the touch screen and deliver a first signal representative of the detected acoustic signals. An automatic gain control amplifier has an input, output, and control terminal, and is adapted to receive the first signal on the input terminal and deliver an amplified version of the first signal on the output terminal. The control terminal is adapted to receive a control signal that varies the gain of the amplifier. An analog to digital converter is adapted to receive the amplified first signal and deliver a digital representation thereof. A first circuit is adapted to receive one of the amplified first signal and the digital signal, determine the difference between the received signal and a preselected value, and deliver a control signal to the control input of the amplifier. The control signal has a magnitude responsive to the determined difference.

Abstract: The present invention relates to a planar wave guide structure having a grating element fabricated thereon as well as a focusing element therein. The lens element of the present disclosure is preferably a void, to include air, a vacuum or other material which has an index of refraction less than an index of refraction of the core layer of the planar wave guide in which the lens element is disposed. The lens element is preferably fabricated by laser micromachining or other techniques described herein. The grating at the far end of the planar wave guide functions to separate wavelengths in the demultiplexing embodiment of the present disclosure, and as a wavelength integrator in the multiplexing embodiment of the disclosure of the present invention.

Abstract: The invention is directed to a crimp plug having a front portion, a center portion, and a securing portion. A conductor receiving cavity extends from the front e into the center portion. A stop shoulder within the center portion provides transition from the conductor receiving cavity to a plurality of conductor receiving passageway extending to a rear end. Each conductor receiving passageway serves to properly position the conductors while the stop shoulder serves to control the insertion length. A securing portion extends from the center portion and provides for securing of the cable.

Abstract: The invention is directed to a solderable aluminum alloy having an aluminum alloy which is formable into a substrate. The aluminum alloy has 0.05-4.5% by weight of tin added to the aluminum alloy to be formed into the substrate. The invention is also directed to a process for preparing a solderable aluminum substrate. The process includes preparing an aluminum slug with 0.05-4.5% of tin added to the aluminum slug; then rolling the aluminum slug to the desired thickness for the substrate; finally forming the rolled slug into the final shaped of the substrate.

Abstract: Transceiver circuitry (10, 200) for use in a GBIC module uses readily available off the shelf components to satisfy the specifications of the GBIC standard. In both passive and active modules, a voltage divider (98) and parallel transistors (94, 96, 100) are utilized to insure that the differential voltage of the received differential signal is at an acceptable level. In active modules, a diode cross over quad (84) is utilized to extend the input range of a low input differential receiver (78) and a coaxial cable driver (60) designed to drive 50 ohms is utilized to drive 150 ohms.

Abstract: The invention is an optical ADD/DROP filter suitable for dense wavelength division multiplexing/de-multiplexing. It comprises an optical bench having a longitudinal V-groove into which the optical components of the ADD/DROP filter are passively aligned and bonded. The bench further includes first and second pairs of opposed, spaced, vertical members at each end between which a fiber array block is inserted. In the method of constructing the ADD/DROP filter, an interference filter is bonded to a first collimating lens. Then, the first collimating lens with the interference filter attached thereto and a second collimating lens are placed in the V-groove of the bench where they are passively aligned. The two collimating lenses are then bonded to the bench. Fiber array substrates are inserted between the pairs of opposed, spaced, vertical members and a UV transparent block is inserted on top of each fiber array between the corresponding pair of opposed, spaced, vertical members.

Abstract: A coaxial connector (10) for a coaxial cable (100) having a corrugated outer conductor (108), including one which is helically corrugated. An adapter (40) of the connector can include a crimpable sleeve (44) within which is a bushing (70) initially having an axial slot (72) of selected dimension. The inner surface (74) of the bushing is fluted defining ridges and grooves (for cable of annular corrugation), or a continuous helical ridge (76) and associated groove (78) defining a thread of corresponding pitch, and general inner diameter permitting cable insertion. Upon full threading of the cable end into adapter (40), crimp sleeve (44) is crimped thus closing axial slot (72) and stopping the crimp process to achieve a minimum desired inner diameter. The adapter may be a discrete subassembly and securable to a forward connector portion in modular fashion by complementary threaded flanges (32,46).

Abstract: The present invention provides an optical interconnection system capable of connecting a plurality of optical array connectors between assemblies. The optical array connectors are arranged to minimize the board real estate occupied by the assembly. Safety features are provided for preventing light from escaping in both the mated and unmated condition.

Abstract: A duplex fiber optic splice has a fiber-receiving element, two clamping elements covering opposite faces of the fiber-receiving element, and a spring element. A bearing key may be inserted into a bearing channel in the fiber-receiving element and rotated resulting in resilient disengagement of each of said clamping faces from said fiber-receiving element face. The resilient disengagement of the clamping elements are independent of each other. The splice assembly may be used alone or in conjunction with an array ferrule, pre-terminated with a fiber stub, and a housing to provide an adhesiveless field terminable connector.

Abstract: A fiber optic connector utilizing a fiber array ferrule 20 has a housing 1 with an internal geometry that provides transverse alignment of the ferrule relative to the housing 1 when the connector is in an unmated condition and permits transverse displacement of the ferrule relative to the housing when the connector is in a mated condition. This structure advantageously permits proper pre-mating alignment with a mating connector ferrule or other optical device while also improving isolation of the ferrule from external loads imposed on the housing 1 when the connector is in a mated condition.

Abstract: The present invention improves the durability of a card connector by providing a card-holding structure which does not have resilient parts. Ribs (30) and grooves (32) are formed at corresponding positions in opposite inside surfaces (6a, 6b) of a rear end portion of a card-receiving slot (6) of a housing (2) to accommodate a card (C) inside housing (2). An upper surface of the inserted card extends into the grooves (32) by the ribs (30), so that the card is held between the ribs (30) and grooves (32).

Abstract: A power transistor (2) circuit for increasing the gain of an amplified RF signal has a power transistor (2), a voltage bias circuit biasing the power transistor 2, the voltage bias circuit having a peak detector (12) and a source of voltage (9) supplying respective outputs to a summer (13), and the summer (13) supplying the sum of outputs of the peak detector (12) and the source of voltage (9) to increase the bias of the power transistor (2) and provide an increased gain upon detection of an RF signal peak.

Abstract: An electrical connector assembly (1) for establishing a mated electrical connection with a plug-in unit (2), has an electrical connector (5) mounted on rails (16), and a resilient spring mechanism (19) urged in compression in response to movement of the connector (5) rearwardly to realign its position when mated with an inaccurately aligned plug-in unit (2).

Abstract: Transceiver circuitry (10) for use in a GBIC module uses readily available off the shelf components to satisfy the specifications of the GBIC standard. A diode cross over quad (84) is utilized to extend the input range of a low input differential receiver (78). A voltage divider (98) and parallel transistors (94, 96, 100) are utilized to insure that the differential voltage of the received differential signal is at an acceptable level. A coaxial cable driver (60) designed to drive 50 ohms is utilized to drive 150 ohms.

Abstract: The present invention provides a card edge electrical connector which makes it possible to achieve reliable grounding of a daughter board to a mother board via latch members thereof. Card edge connector (1) is equipped with an insulating housing (10), which is to be attached to a mother board (50) and which has a daughter board-accommodating recess (11) that extends in the direction of length thereof, and metal latch members (30), which are disposed in the vicinity of end portions of the housing (10) with respect to the direction of length of the housing and which hold a daughter board (60) at a second angle when the daughter board (60) is rotated to the second angle after being inserted into the daughter board-accommodating recess (11) at a first angle. The latch members (30) are connected to a ground path of the mother board (50).

Abstract: An amplifier (1) of improved linearity has a predistortion, bipolar junction device (4), and a transistor (2) on an input side of the amplifier (1), the bipolar junction device (4) being smaller in size than the transistor (2), and having its bipolar junction of opposite polarity with that of the transistor (2), to cancel distortion in an output of the first stage transistor (2).

Abstract: The present invention provides a PC card connector which has a small number of parts, and which makes it possible to obtain good operating characteristics and a low-operating force by means of a relatively simple structure. A guide plate assembly (70) of the PC card connector has a guide plate (32) which has guide grooves (80, 84) and a circular cam groove (82); furthermore, the guide plate assembly (70) also has pressing-bar assemblies (72a, 72b) which are disposed on both sides of the guide plate 32. Each of the pressing-bar assemblies (72a, 72b) has a swinging plate (76) which is pivot mounted on a pin (74) in a front portion. Pins (74, 77) and projection (89) of the pressing-bar assembly (72a) respectively slide along a guide groove (80), circular cam groove (82) and guide groove (84) of the guide plate (32) in accordance with the operation of the pressing-bar assembly (72a).

Abstract: An electrical cable assembly 1 comprising: a housing 2, electrical contacts 3 in the housing 2 connected to a circuit board 4, multiple conductors 5 of an electrical cable 6 connected to the circuit board 4, signal conditioning circuitry 7 on the circuit board 4, the circuitry 7 being interposed between the electrical contacts 3 and the conductors 5, and an insulating holder 8 mounted on the circuit board 4, the contacts 3 extending on the holder 8, and the holder 8 being mounted in a cavity in the housing 2.