Abstract: An adaptive UWB radar front-end that can a) automatically tune the pulse width for target type and depth; b) automatically sweep specific area by controlling the timing (delay); and, c) for each steering direction, it can automatically adjusts the power distribution for improving radiation pattern and thus improving signal quality for clutter free imaging.

Abstract: A method for scanning frequencies of a network by a tuner, in order to determine available frequencies, the network including a plurality of coverage zones, a respective signal being emitted over each coverage zone of the network, at a respective frequency, the tuner being located in one of the coverage zones, referred to as the current coverage zone, a signal, referred to as the current signal, being emitted over the current coverage zone, the current signal conveying a plurality of services according to a time slicing method. The method includes obtaining a group of frequency values of the frequencies of coverage zones of the network, and during time intervals separating the time slices dedicated to the at least one service intended to be received, the tuner scanning all the frequency values of the group in order to determine available frequencies, whatever is the number of frequency values in the group.

Abstract: The present invention provides a central frequency adjustment device and adjustable inductor layout; wherein, the central frequency adjustment device is applied in an inductor/capacitor tank (LC tank) for adjusting the central frequency of the LC tank. The device comprises a first inductor with a first end and a second end; a second inductor with one end coupled with the second end of the first inductor; and, a first trimmable wire connected to the first inductor in parallel and to the second inductor in series, which adjusts the central frequency by cutting off the first trimmable wire.

Abstract: Disclosed is a high frequency tuner module, including: a circuit component; signal lines; a GND line; and a multilayer board formed by laminating a plurality of layers, wherein the circuit component is placed on a top layer surface of the multilayer board; the signal lines and the GND line are formed inside the multilayer board; and among the signal lines, high frequency signal transmitting signal lines to transmit a high frequency signal are formed on a single layer inside the multilayer board.

Abstract: A television tuner has a bottom chassis, a top cover and a front panel, the bottom chassis having support surfaces provided on an upper portion of a front side of the bottom chassis to extend with a rising slope in a direction from a front side toward a rear side thereof, a plurality of semi-spherical projections formed on the support surfaces, a plurality of substantially U-shaped notches provided on the support surfaces, and the top cover having a convex-shaped portion to abut against the semi-spherical projections on the bottom chassis and to project toward the semi-spherical projections to function as a reinforcement rib, and hook-shaped engagements to engage with an upper portion of an inner surface of the front panel from under.

Abstract: This instrument for use in tuning and testing radio frequency circuits, comprises an elongated dielectric rod long enough to be grasped by hand, and having a miniature electronic component at one end secured by an adhesive layer and a length of shrink-wrapped plastic tubing. Two closely spaced stiff leads project from the component for application to closely spaced test points of a radio frequency circuit under test. The component can comprise a miniature test circuit, interconnected miniature electronic parts of any type, a miniature capacitor alone, or a capacitor in circuit with other electronic circuit parts.

Abstract: Disclosed herein is a drive device designed to be detachably mounted on an existing video cassette recorder and playback machine and including a friction wheel designed to frictionally engage a channel tuning wheel already located on the machine as manufactured. The invention drive device includes a control knob constrained to rotate with the friction wheel via a shaft protruding through a housing of the device with the housing being detachably mounted on the machine with the friction wheel in frictional engagement with the existing tuning wheel.

Abstract: A double-tuned circuit is provided of the type comprising a primary tuning circuit including first and second resonance coils connected in series and a first switching diode interposed between the connection point of the first and second resonance coils and the ground, and a secondary tuning circuit including third and fourth resonance coils connected in series and inductive-coupled with the first and second resonance coils, respectively, and a second switching diode interposed between the connection point of the third and fourth resonance coils and the ground, wherein band switching is preformed by turning on/off both the first and second switching diodes, which is characterized in that a bias voltage for turning on the first and second switching diodes is supplied to one of the switching diodes and through a conductive wire inductive-coupled with a sintered magnetic material to the other of the switching diodes, whereby an enlargement of the bandwidth and degradation of the flatness of the passband characte

Abstract: In a device wherein electric components and rotary knobs for operating them are disposed in a case with the rotary knobs extending partially through respective slots formed in the upper surface of the case, the improvement comprising the fact that the rotary knobs are arranged in two rows and staggered with a barrier formed between the two rows.

Abstract: A tuning device has a dial drum rotatably supported in a frame, and a rheostat operatively connected to the dial drum. A knob is disposed in alignment with the dial drum. The dial drum has an outer toothing formed on the periphery thereof. A drive gear is secured to the knob, and a reduction gear train is disposed between the drive gear and the outer toothing for transmitting the rotation of the drive gear to the dial drum.

Abstract: An electronic tuning block including a plurality of screw drive type variable resistors are juxtaposed parallel to one another obliquely on an insulating substrate, and holes for receiving pointers fitted to the screws of the variable resistors and holes for receiving rotary knobs fitted to the tips of the screw shaft are formed on the upper surface of a box-shaped insulating case which is fixed to the insulating substrate.

Abstract: A key assembly for receiving units employed in communications engineering, articularly for television receivers, comprises a plurality of mutually releasable depressible keys adapted to switch on storable, selectively adjustable electrical values supplied by channel memories consisting of a plurality of voltage dividers for capacitance diode tuning, further comprising, in association with the respective depressible keys, a plurality of depressible and rotatable knobs adapted to be rotated by means of a tool, said knobs being concealed behind a cover member slidably guided in a recess, said knobs being adapted to provide channel tuning and, if required, selection of the desired frequency range, said frequency range being adjustable by rotating the respective depressible and rotatable knob into any of a plurality of detented angular positions with the knob being in a position differing from the tuning position of the knob, and comprising a switch which is adapted to be actuated by means of a push rod which is c

Abstract: An arrangement is provided for mechanically connecting threaded tuning elements of electrical components to rotators driven by automated apparatus. The arrangement includes tuning tools which provide positive rotation to the tuning elements but which permit relative longitudinal motion between the tuning tools and the tuning elements. The tuning tools further have conical receptacles which are rotated by conical members that self-align with the receptacles. The conical drive members are connected by telescoping and universally joined drive shafts to motors under the control of the automated apparatus.

Abstract: An insulated coupling usable with a television tuner shaft or the like for electrically isolating the tuner shaft from the chassis of the television receiver includes a pair of flanged insulating bushings pressed into axially extending chambers formed in the ends of two coupled sections of the tuner shaft. A knurled pin fabricated from hardened steel or other strong material is pressed into the two bushings to hold the two sections of the shaft together with the two flanges of the bushings abutting to form an insulated section between the two coupled sections of the shaft.

Abstract: A tuner comprising a plurality of cylindrically assembled bases supported between a pair of support plates secured to a rotatable shaft, receiving circuit blocks for receiving waves in different frequency bands being provided in groups on the inner side of said bases, whereby it is possible to reduce the space requirement for the whole tuner construction and make ready adjustment of the individual receiving circuit blocks.

Abstract: A limited tuning range tuning unit useable with a television tuner of the turret type includes a user tunable coil having a tuning slug extending from an end of the tuning unit. A pinion gear engageable by a drive train coupled to a user operated fine tuning shaft is attached to the end of the tuning slug. The pinion gear is provided with a stop tooth for limiting the adjustment range of the slug to approximately one revolution. In one embodiment, the slug is also longitudinally movable with respect to a coil in the coil unit to provide a factory adjustment for centering the tuning range available to the user. Alternatively, the factory adjustment may be provided by making the slug rotatable with respect to the pinion gear.

Abstract: A tuning device has a dial drum rotatably supported in a frame, and a rheostat operatively connected to the dial drum. A knob is disposed in alignment with the dial drum. The dial drum has an outer toothing formed on the periphery thereof. A drive gear is secured to the knob, and a reduction gear train is disposed between the drive gear and the outer toothing for transmitting the rotation of the drive gear to the dial drum.