Abstract: An antenna system for a vehicle includes a first antenna array affixed to the vehicle and a remote antenna system. A first connector is affixed to the vehicle, and is connected to the controllable switch. The remote antenna system includes a second antenna array including a second active antenna and a wiring harness. The wiring harness includes a second signal lead connected to the second active antenna, a ground lead, and a second connector. The signal lead and the ground lead connect the second active antenna of the second antenna array to the second connector. The first connector is connectable to the second connector, and the switch array communicates signals from the second antenna array to the on-vehicle controller when the second connector of the second antenna array is connected to the first connector.

Abstract: A vehicular half loop antenna is provided that includes a ground section and a feed section. The ground section has a ground point that is configured to be electrically grounded. The feed section is configured to be electrically connected to the ground section. The feed section includes a first feed portion having a feed point that is configured to be electrically connected to an antenna feed, and a second feed portion connected to the first feed portion via a corner portion therebetween, with the corner portion being located farther from the ground point than the feed point and having a curved or tapered outer edge.

Abstract: An after-market antenna for a vehicle includes an elongated body having a top end, a bottom end, and at least one peripheral side. The bottom end terminates with an axial bore extending partially through the body and adapted to receive an antenna wire within. The axial bore includes threads at the bottom end of the body that extend upward at least partially through the axial bore for receiving a conductive threaded shaft that projects out of the axial bore and that is adapted for screwing into a threaded antenna aperture of the vehicle. A first groove is formed around the body and has a back wall substantially circular in cross-section except for two opposing parallel sides adapted for contacting two opposing sides of a wrench that has a thickness that is smaller than a width of the first groove. Various extension pieces and top pieces may also be included.

Abstract: The disclosure relates to a pivot axle arrangement for providing the two structural elements are pivotally movable in relation to each other. The pivot axle arrangement comprises a first and a second axle spindle for holding an outer axle, a first and a second bearing element and the outer axle. The outer axle is formed as a hollow cylinder. An inner axle is concentrically arranged in a longitudinal direction inside of the outer axle such that the inner axle extends between said first and second axle spindle. The ends of the inner axle are fastened to the first and second axle spindles by a first and second fastening means such that the first and second axle spindles are interconnected via said inner axle.

Abstract: Various high-strength microwave antenna assemblies are described herein. The microwave antenna has a radiating portion connected by a feedline to a power generating source, e.g., a generator. The antenna is a dipole antenna with the distal end of the radiating portion being tapered and terminating at a tip to allow for direct insertion into tissue. Antenna rigidity comes from placing distal and proximal radiating portions in a pre-stressed state, assembling them via threaded or overlapping joints, or fixedly attaching an inner conductor to the distal portion. The inner conductor is affixed to the distal portion by, e.g., welding, brazing, soldering, or by adhesives. A junction member made from a hard dielectric material, e.g., ceramic, can be placed between the two portions and can have uniform or non-uniform shapes to accommodate varying antenna designs. Electrical chokes may also be used to contain returning currents to the distal end of the antenna.

Abstract: An RV television antenna adaptor device includes a main body having a pair of elongated hollow channels for receiving and engaging a pair of support beams of an RV antenna system, and a curved tubular shaft that is positioned opposite to the pair of channels for engaging the circular-shaped opening of a pole-mountable television antenna.

Abstract: An artificial satellite includes at least one hatch formed in a wall of the artificial satellite coming in contact with dead space of the artificial satellite, and a hatch opening and closing mechanism which opens the hatch, and the antenna is attached to the hatch.

Abstract: A radar antenna is provided. The radar antenna includes an antenna unit provided with dielectric bodies in a front part thereof in a radio wave radiating direction, a housing unit for supplying a radio wave to the antenna unit, and an antenna supporting unit made of FRP attached between the antenna unit and the housing unit to separate the antenna unit from the housing unit.

Abstract: A method for estimating the characteristic impedance of a structure comprising the following steps: providing a current probe comprising a magnetic core having an aperture therein and a primary winding wrapped around the core; measuring, with a calibrated vector network analyzer (VNA), the impedance (Zop) of the current probe while in an open configuration wherein nothing but air occupies the aperture and the current probe is isolated from a ground; measuring, with the VNA, the impedance (Zsh) of the current probe while in a short configuration, wherein the current probe is electrically shorted; measuring, with the VNA, the impedance (Zin) of the current probe while the current probe is mounted to the structure such that the structure extends through the aperture; and calculating an estimated characteristic impedance (Z?mast) of the structure according to the following equation: Z?mast=(Zin?Zsh)(Zop?Zsh)/(Zop?Zin).

Abstract: The present disclosure is directed to a rooftop-mounted off-air television antenna system, device and method including an integrated signal meter. The antenna portion of the device is mounted to the roof of a vehicle. An antenna adjustment mechanism is located inside of the vehicle cabin. The adjustment mechanism enables the user to adjust a position of the antenna on the roof, such as by rotating a dial that is coupled to the antenna. A signal meter is disposed in the adjustment mechanism and electrically connected to the antenna. A display of the signal meter readout is disposed in the adjustment mechanism in a location that can be easily viewed by a user during an aiming operation. The display allows the user to determine when the antenna has been positioned in order to obtain the approximate maximum signal strength possible given the vehicle's current location.

Abstract: Disclosed are a beamforming method and a beamforming apparatus for an adaptive antenna. A mobile terminal equipped with the adaptive antenna is initialized, a base station to transceive a signal with the mobile terminal is searched, beamforming is performed based on the searched base station, a reference position value of the mobile terminal is stored, and the beamforming of the antenna is adjusted if a sensing module in the mobile terminal detects position change of the mobile terminal based on a reference position. A changed position of the mobile terminal is stored as the reference position value, so that the position of the terminal is detected based on the reference position in real time, thereby simply and accurately performing the beamforming.

Abstract: A communication device includes a communication circuit part, a transmission path for signals, a ground, a coupler electrode, and a resonance part. The coupler electrode includes an upper flat part as an electrode, a support, and a connecting portion. The support supports the upper flat part. Thus, the upper flat part faces the ground and is separately placed therefrom at a height only enough to ignore the wavelength of the signal, while having a flexible portion which is elastically deformable in the height direction. On the connecting portion, the other end of the support is connected to the transmission path. The resonance part enlarges a current flowing into the coupler electrode through the transmission path. A micro dipole is a line segment connecting between the center of accumulated electric charge in the coupler electrode and the center of mirror charge accumulated in the ground.

Abstract: A handheld device may include one or more antennas and a connector both disposed at a base of the handheld device. The connector may have a shell comprising a conductive material. The connector shell may include at least one opening in a portion of the conductive material to reduce electromagnetic interference between the connector shell and the one or more antennas.

Abstract: A system for accurate automatic satellite acquisition by a portable satellite terminal. The system includes a software program that coordinates inputs from several measurement aids to control antenna position. These aids include a GPS receiver, antenna azimuth, elevation and polarization angle sensors, and the terminal's modem, DVB receiver and spectrum analyzer, which contains a beacon detector also serving as Receive Signal Strength Indicator (RSSI). For satellite recognition, the spectral analysis and RSSI function are complemented by the lock/unlock indications provided by the modem and the DVB receiver. Under the control of the software program, the modem, DVB receiver and spectrum analyzer, in conjunction with an extensive database of satellites and their signal characteristics, provide the means for reliable validation of final alignment.

Abstract: A vehicle 16 includes a vehicle body 30. A satellite antenna 18 is mounted within the vehicle body 30. A satellite transmissive panel 40 is coupled to the vehicle body 30 adjacent to the antenna 18. The satellite antenna may be mounted within the passenger compartment 20 or within the trunk 90 of the vehicle 16.

Abstract: Systems and methods for a manually adjustable directional antenna are disclosed. The device includes a housing and the housing includes a wireless modem, a directional antenna and an adjustment mechanism. The adjustment mechanism is coupled to the directional antenna via a mounting pipe. Alternatively, the housing includes a directional antenna, an adjustment mechanism, and a connector, which couples the directional antenna to an external modem. The adjustment mechanism may be an adjustment knob for the directional antenna within the housing or a rotatable turntable used to support and rotate the entire housing, including the directional antenna.

Abstract: The present invention determines optimal positions of a variable antenna using an artificial intelligence-based genetic algorithm (GA). The GA acquires a fitness value for an individual of a genetic algorithm population by updating positions of the antenna. The population improves through an evolutionary computational process using a fitness measure based on the signal strength. At the end of the process, the system positions the antenna to the best position found by the GA. Therefore, the final position gives exceptionally clear reception for a chosen received frequency.

Abstract: A system for receiving direct broadcast satellite signals in a mobile craft is disclosed. Generally, the system includes an orientation system for determining the first orientation of the mobile craft, a controller or processor for determining first position control data, and an electronically-pointable antenna adapted to receive first position control data from the controller, such that the antenna is pointable in accordance therewith, such that a first direct broadcast satellite signal is receivable from a first direct broadcast satellite, and a direct broadcast satellite receiver for processing a first radio frequency signal corresponding to the first direct broadcast satellite signal received by the electronically-pointable antenna.

Abstract: An RF air coil transponder includes a rotatable carrier, such as a rigid reel. A coil is wound about the reel and at least one field influencing body for influencing the electric and/or the magnetic field within the coil is supported by the reel. The rigidity of the reel enables the coil to keep its form and guarantees precise distances between windings, especially when a winding machine forms the coil. Adjusting the angular position, shape, composition, size, and/or surface are of the body effects adjustment of the resonant frequency.

Abstract: An on-vehicle DSRC apparatus includes a main body (11) a signal processing unit provided in the main body (11), an external storage medium insertion slot (12), an antenna array (22) electrically connected to the signal processing unit to perform intercommunication with on-road equipment, a mounting member for the antenna array (22), and an antenna angle holding means (20) mounted swingably on said mounting member (11). The antenna angle holding means (20) is so designed as to set the predetermined range of angle such that a proper angle for enabling intercommunication between the on-road equipment and the antenna array (22) within the predetermined communication area. The angle of the antenna array is automatically held at a proper value owing to swinging movement of the antenna angle holding means.

Abstract: A heating line pattern structure of a defogger comprising a meander shape heating line portion is provided, in which the local temperature rise of a glass panel may be suppressed and which has a good outward appearance. Two lateral heating lines each having a thick width are provided under the meander shape heating line portion. Tow lateral heating lines are connected to each lateral heating line under the meander shape heating line portion through a vertical heating line.

Abstract: LF antennas are mounted respectively on the corners of a rear bumper of a vehicle. Radio waves radiated from the LF antennas mounted respectively on the corners of the rear bumper are propagated to the both surfaces of the vehicle on the opposite sides of the corner, providing effective transmission ranges. The remaining LF antennas are mounted respectively on the side surfaces of the vehicle such that their effective transmission ranges overlap the effective transmission ranges of the LF antennas mounted respectively on the corners of the rear bumper.

Abstract: A variable antenna apparatus for a mobile terminal. The variable antenna apparatus includes a radiation component that is rotatably coupled with the mobile terminal, a feeding component that is adjacent to a first end part of the radiation component and electrically connected to a radio frequency board of the mobile terminal. A grounding component is adjacent to the first end part of the radiation component and selectively connected to a ground of the radio frequency board as the radiation component is rotated. The antenna apparatus is accommodated in a terminal so that it is possible to conveniently carry the terminal, and the antenna is rotatably protruded from the terminal during a telephone call, such that appropriate antenna gain is achieved.

Abstract: The invention is an antenna system that transmits and receives image signals audio signal and/or data signals. The antenna system has at least one antenna element and one or more power supply elements. A power supply switching device switches the power supply element or elements to select at least one antenna element and a power supply cable supplies power to the power supply switching device.

Abstract: An antenna apparatus includes an antenna element having directivity in a vertex direction, an antenna case containing the antenna element, an antenna base coupled to the antenna case, and attached onto an installation face, and an angle regulator adjusting a relative angle between the antenna case and the antenna base.

Abstract: A matching circuit for a screen antenna receives on its signal input an MF or LF signal output of a screen antenna and feeds a signal though its signal output via a capacitive feeder to a radio receiver. The matching circuit includes components which operate in conjunction with capacitances in components connected to the signal input and the signal output to form an internally-terminated band-pass filter network having a pass-band which covers a range of frequencies to be received by the receiver.

Abstract: A wireless remotely controlled power retractable antenna for a vehicle radio system. A power retractable antenna is provided with a receiver/controller. Rather than rely on signals from the radio or other hard-wired device, the receiver/controller is adapted to receive a signal from a hand held transmitter. The hand held transmitter has up and down buttons for sending a specific signal representative of the desired antenna position. When it is desired to raise the antenna, the up button is depressed and the transmitter sends an up signal to the receiver/controller. When the antenna is desired in the down position, the down button is simply depressed and the transmitter sends a down signal to the receiver/controller. The controller operates a motor to drive the antenna in accordance with the received signal.

Abstract: A collapsible dish antenna mount (1) for a vehicle roof, has a mast (11) received in said roof and extending into the vehicle. The dish antenna (3) is secured to said mast (11) by a mechanical linkage operable from within said vehicle such that the dish antenna (3), when raised, may be adjusted in both azimuth and elevation. When not in use, the antenna mount (1) can be folded to reduce windage.

Abstract: A multi-functional apparatus employs an intermittent motion mechanism. An electromagnetic device selectively causes movement of the intermittent motion mechanism thereby moving a mechanical device coupled thereto. In another aspect of the present invention, a single electric motor selectively actuates two or three intermittent rotary motion mechanisms thereby causing separate mechanical devices coupled thereto to operate within an automotive vehicle.

Abstract: A control device for an electrically driven telescopic antenna including: a counting signal extracting circuit which detects the altered waveform of an rectified current generated during the forward or reverse rotation of a DC motor so as to extract counting signals; a command device which sends a control stop command to a motor drive control circuit when the counted value of the extracted counting signals reaches a certain preset value; a motor current monitoring circuit which monitors the current flow to the motor and outputs information on the completion of the antenna element extension/retraction action when the motor current value exceeds a prescribed value; and a correction device which corrects the counted value based upon the information outputted by the motor current monitoring circuit. The control device can include a large-capacitance capacitor for absorbing power supply fluctuations.

Abstract: A retractable antenna assembly having a helically coiled antenna, a bushing having a helically threaded hole fully therethrough which freely engages the helical coil, and a driver to cause helical motion to the antenna relative to the bushing, and thereby extend or retract the antenna.

Abstract: A system is described for raising and lowering an antenna without using an electric motor or hand crank. A shaft is attached to an antenna mounted to the roof of a recreational vehicle. A first adapter engages the shaft. A second adapter couples with the first adapter. A portable self-powered activating device such as an electric screwdriver is secured by a chuck to the second adapter. The rotational force generated by the activating device is transferred via the first and second adapters to the shaft to raise or lower the antenna.

Abstract: A system is provided for mounting directional antennas on vehicles. The mounting system employs a conventional roof rack as a support base for the antenna mount. In one embodiment, a straight tubular frame member is attachable to the roof rack. An upwardly-extending rotatable shaft extends from adjacent one end of the frame, for supporting the antenna mast, and a downwardly-extending rotatable shaft, supporting a control handle, extends from adjacent the other end of the frame. The rotational movements of the shafts are tied together by a toothed belt which engages sprockets coupled to the shafts. In its preferred form, the control handle includes tactile positioning indicators on its surface which allow the user to sense the direction of the antenna without having to view it. A second embodiment is disclosed which uses a portion of a tubular horizontal bar on a conventional roof rack as part of the support frame of the device.

Abstract: For a vehicle which sometimes requires two-way radio communications but which sometimes requires an ordinary appearance, for example an unmarked law enforcement vehicle which could be compromised by the conspicuousness of a conventional communications antenna and associated external mounting hardware, this antenna system provides an external antenna rod which is readily deployable and removable from within the vehicle. The novel mounting hardware is highly inconspicuous since its exposed area is very small and is made flush with the surrounding vehicle body surface. In the mounting assembly, an insulated bushing, carrying a socket having a contact sleeve, has a small aperture in line with the contact sleeve, forming a passageway through the vehicle body through which the external antenna rod may be deployed. Alternatively, an internal antenna rod may be readily deployed in the same mounting assembly to project inwardly, enabling covert limited range communications.

Abstract: A broadcasting receiver for vehicles especially suited for receiving satellite broadcasting signals comprises a base plate rotatable horizontally, a main reflector tiltably attached to the base plate, a sub-reflector attached to the end portion of an arm of which the other end is attached to the base plate so as to be rotatable horizontally, and a signal detector fixed to the main reflector. The vertical angle between the main reflector and the arm are maintained at a predetermined angle, and the sub-reflector which is arranged to be rotatable around the end portion of the arm is caused to stand up when the main reflector is in a stand up position. All devices and parts arranged on the base plate including the arm and the sub-reflector are covered by the main reflector when the main reflector is turned down.

Abstract: A clutch system for a motor driven telescopic antenna, a first rotor provided on a main shaft for moving an antenna drive cord of a telescopically adjustable antenna, a second rotor fitted over the main shaft and rotated by an electric motor, first and second clutch discs which are inserted over the main shaft and kept pressed in the shaft direction by a clamp in order to press hold both end surfaces of the second rotor in between by applying a pressurizing force to the second rotor. The clutch system further includes a clutch pressure setter for dissociating the first and second clutch discs from the second rotor when the force exceeding a specified clutch pressure that is set in relation to the engagement with the main shaft acts on the holding surfaces between the second rotor and the first and second clutch discs.

Abstract: A satellite transmission receiving antenna with unique mounting provisions for a recreational vehicle roof. A generally cylindrical collar extends upward from the vehicle roof and attaches to a load distributing panel under the collar and over the area of the vehicle roof for load distribution. A parabolic reflector is hinged along an edge to a generally horizontal turntable within the collar so that the reflector may be rotated to a concave downward position to act as a weather cover over the collar and also to provide smooth aerodynamic conditions during transport. Rotation of the turntable through a motor driven gear coupling to the turntable effects azimuth positioning of the antenna and elevation angle is set by a linear actuator.

Abstract: A mobile radio antenna is provided such that its antenna function may be concealed. This may be accomplished in one preferred arrangement by coupling or blending the mobile radio unit with an oranmental device at the traditional frontal hood-level location. In the case of a luxury automobile, the ornamental device may be designed to enhance the aesthetic appearance of the vehicle. In certain instances, the mobile antenna may include or be associated with an ornament arrangement for receiving any desired indicia (e.g. a company logo) as selected by an individual owner.

Abstract: A test system for microwave circuits such as employed in aircraft wherein a plurality of antennas are connected to a single processor whereby the continuity of the antennas and connectors between the antennas and the processor can be determined. A test signal is applied to the various antennae of the aircraft and the return signals therefrom received by a test antenna disposed in conjunction with a low-loss coupler from outside of the aircraft. An automated test circuit provides for inputting an identifier of the antenna and circuit portion being tested, and for determining the fault location within the circuit as a function of the circuit portion under test and the distance to the fault; and for displaying the fault location within the circuit. In one embodiment, the low-loss coupler includes the use of a plurality of test antennas in combination with a divider circuit connected to the test antennas by transmission lines.

Abstract: The location of a vehicle itself is detected on the vehicle in combination with an attitude control of an antenna mounted on the vehicle so that the antenna is directed toward a geostationary satellite. The antenna is driven for rotation about both a horizontal and a vertical shaft. A mean running speed MVb and a mean azimuth MQd of the vehicle over a time interval t.sub.2 are used to calculate corrections .DELTA.Px and .DELTA.Py to the vehicle location, which corrections are added to vehicle location data corresponding to the starting point of the interval t.sub.2. A mean azimuth MQd, a mean speed MVb, a mean roll angle MQr and a mean pitch angle MQp are used to control shifts .DELTA.Qdpo and .DELTA.Qppo which occur in the antenna attitude relative to the geostationary satellite as a result of the running of the vehicle over the time interval t.sub.2, and these shifts are used to correct the antenna attitude.

Abstract: Slot antenna apparatus for a motor vehicle roof having a central portion made of electrically non-conducting material comprises a horizontal sheet of electrically conducting material attached to the roof with a looped slot adjacent the central portion of the roof dividing the sheet into inner and outer portions and having a total loop length of substantially one wavelength in the commercial FM broadcasting band. Antenna feed means are provided at the front center of the slot for FM receiver apparatus and at the side center of the slot essentially 90 degrees rotated from the front center of the slot for AM receiver apparatus. The AM and FM feeds may be connected by coaxial cable to AM and FM tuners in a common radio receiver in the vehicle dashboard; or separate AM and FM portions of the receiver may be installed adjacent the appropriate antenna feeds. The antenna is grounded at DC and in both the AM and FM commercial frequency bands.

Abstract: The present invention provides an autombile antenna system for detecting surface currents induced on the vehicle body by radio waves. The antenna system includes an electrostatic shielding case mounted on the vehicle body and having an opening formed therein. The opening in the case faces a metallic plate in the vehicle body and a loop antenna is housed within the case and disposed in close proximity to the opening thereof. The loop antenna has a plane of the loop positioned relative to the surface of the metallic vehicle plate at an angle in the range of 90 degrees to 135 degrees or 225 degrees to 270 degrees, whereby the antenna system can more efficiently detect the surface currents induced on the vehicle body by radio waves and can be miniaturized and improved in performance without any externally protruding member.

Abstract: An antenna system is provided with a plurality of telescoped antenna sections which are extended and contracted by an operating wire connected to the uppermost antenna section. The wire is made of a relatively rigid material and has a width of 1.5.about.2.2 times its thickness. There is also provided a clutch for selectively operating the antenna by a motor or the human hand.

Abstract: The invention pertains to an extendable directionally adjusted dipole antenna particularly suitable for use with recreational vehicles. The antenna includes a vertical column having an extendable dipole arrangement at its upper end utilizing flexible actuators associated with a pair of reels whereby the actuators and associated telescoping antenna assemblies are simultaneously extended and retracted. An operating shaft for rotating the reels extends through the column and either manual or electric means rotate the shaft. The column is rotatable for directional adjustment, and under manual control the shaft extends through the vehicle roof permitting interior adjustments.

Abstract: A satellite antenna particularly adapted for use on a recreational vehicle such as a house trailer or mobile home, having a roof surface, the antenna including a base plate mounted on the vehicle roof surface, a support plate rotatably secured to the base plate and rotatable about a generally vertical axis for at least about 360 degrees, a parabolic satellite signal reflector having a focal axis, the reflector being pivotally secured to the support member, a variable length member, such as a screw type cylinder for selectively pivoting the parabolic reflector relative to the support member, and a feed arm pivotally secured to one end to the parabolic reflector, a signal receiving feed horn mounted on the other end of the feed arm, the feed arm being pivotal to a position wherein the feed horn is coincident with the focus apex of the reflector and to a rest position in which the feed horn is retained within the confines of the reflector interior surface and linkage means to automatically pivot the feed arm to

Abstract: A vehicle radio receiver apparatus constitutes an antenna device including an antenna element and also a radio receiver integral with the antenna device so as to receive a signal from the antenna element. The radio receiver includes a tuner circuit directly connected to the antenna element, a high-frequency amplifier circuit for amplifying the reception signal tuned into by the tuner circuit, and an audio signal converter for detecting and low-frequency amplifying a high-frequency amplified signal and for producing an audio signal. A tuning control signal and a volume control signal are respectively supplied from a control unit to the tuning circuit and the audio signal converter circuit of the radio receiver. This control unit is arranged separately from the radio receiver and receives volume control and tuning control operating signals from an operating section which has a tuning control knob, a volume control knob and the like.

Abstract: A one-piece traffic radar unit has a housing containing both the transceiver and signal processing circuitry and the directional antenna of the radar system. A bracket plate extends from the top portion of the housing and overlies the dashboard of the patrol vehicle to mount the unit therein with the housing depending from the bracket plate in front of the dashboard, thereby leaving the driver's view through the windshield unobstructed. The antenna is of the conical horn type and is vertically disposed to beam the transmitted signal up through the housing to a rotary reflector mounted on the top of the housing. The reflector is rotatable about a vertical axis and permits the operator to aim the beam in any horizontal direction through the windshield or a window of the vehicle. A special safety mount for the reflector provides for 360.degree. rotation and also permits the reflector to break away from the housing on impact.

Abstract: A portable antenna support structure which can be carried by a vehicle and includes an inflatable balloon and telescopic extension poles that are pivoted to the sides of the vehicle at the front and back and may be extended radially when the vehicle is at rest. The vehicle carries a storage tank of compressed helium which can be transferred to the balloon for inflating it, the balloon being equipped with an antenna. Guy lines extend from a winch on the vehicle and are passed around pulleys arranged at the outer ends of the fully extended telescopic poles and then are secured to the balloon for holding it and the antenna in a fixed position and at a desired height above the vehicle. The balloon may be pulled down to the vehicle by the winch where the helium may be withdrawn from the balloon for collapsing it and the gas may be compressed in the storage tank until its next use.