Abstract: A flexible connection extending between two objects which have relative motion is subject to deleterious electrical performance or damage due to fatigue or resonance. The connection is structurally augmented and therefore stiffened without affecting the range of motion by use of one of a pantograph or a bell-crank-and-carriage stiffener arrangement. The structural augmentation connects to the ends of the connection and also to locations along the length, to force portions of the connection to accept motion proportional to their distance between the moving ends.

Abstract: A multi-reflector antenna array capable of simultaneously transmitting and receiving communication signals at Ku-band frequencies is mounted on an exterior surface of an aircraft. The antenna array provides four cassegrain reflector antennas mechanically connected together in a group capable of being simultaneously mechanically scanned. A common support structure fixes the antennas with respect to each other. A drive mechanism and directional azimuth and elevation motors control the position of the array. The aerodynamic drag of the array is minimized using four antennas rather than a single large diameter antenna. Each antenna is positioned on a common horizontal centerline. Two centrally located antennas are positioned between two smaller diameter antennas. The antennas and positioning equipment are both mounted for rotation within a radome. A corporate power combiner/divider is provided to adjust both an amplitude and a phase of each antenna signal.

Abstract: A pedestal system comprises a base having a lower cylinder and an upper rotatably supported with respect to the lower vertical cylinder. A lower motor is coupled between the lower and upper cylinders to selectively cause rotational motion between the cylinders. Also provided is a top-most horizontal cylinder with a rotating shaft. The shaft has a bearing coupling the top-most horizontal shaft with respect to the upper vertical cylinder. Finally, an upper motor is provided. The upper motor is coupled between the top-most horizontal shaft and upper cylinder to selectively cause a rotational motion between the top-most horizontal shaft and the upper vertical cylinders.

Abstract: A system for stabilizing two antennas on a mobile platform, the antennas including a first antenna associated with a first geo-stationary satellite and a second antenna associated with a second geo-stationary satellite, the system comprising an upper alignment system and a lower alignment system. The upper alignment system is configured for being a common support for the antennas. The upper alignment system has an intermediate element. The upper alignment system is configured for pointing the antennas relative to the intermediate element, such that the angular displacement between the antennas is matched with the angular displacement between the satellites. The lower alignment system is connected to the upper alignment system and the mobile platform. The lower alignment system is configured for maintaining the orientation of the intermediate element in order to compensate for rotation of the mobile platform, such that the antennas are maintained pointing toward their respective satellites.

Abstract: The invention relates to a steerable antenna platform including two independently controllable motors for rotating a flat plate or a parabolic dish antenna about two perpendicular axes. The antenna platform includes a semicircular yoke rotatable about a fixed axes with bearings mounted on either end thereof for pivotally supporting the antenna. The antenna platform also includes a ball joint for supporting the center of the antenna, enabling a reduction in the requirements of the two motors.

Abstract: Methods for aligning a satellite reflector with an antenna that has a feed/LNBF assembly. The feed/LNBF assembly is electronically coupled to a set top box which is electronically coupled to a television that has a television speaker. A transmitter is placed adjacent the television speaker. The speaker transmits the audio tones emitted by the television speaker which are indicative to the alignment of the antenna with a satellite to a speaker located adjacent to or attached to the antenna or antenna support structures.

Abstract: Radio antennas are aligned with each other for the creation of a fixed radio link, by temporarily mounting a powered actuator on an antenna forming one end of the link, the actuator being arranged to adjust the alignment of the antenna, controlling the movement of the actuator over a range of alignments, measuring the variations in the properties of a signal transmitted over the link as the actuator is moved, identifying an optimum actuator position, and locking the actuator in the optimum position. By using a powered antenna, it is possible to control the alignment of several antennas from a single convenient location. Once the antenna has been secured in the selected position the powered actuator may be recovered for use elsewhere.

Abstract: This invention describes a method, an apparatus, and a system for optimizing antenna performance by remotely adjusting the plumb-to-level (absolute measurements with respect to true vertical) and the compass heading (absolute compass heading direction with respect to magnetic North) of one or a plurality of communication antennas by electromechanical means. Until now, only fixed, manual adjustments referenced to points on the tower that are assumed to be accurate, but are not, can be made. Furthermore, antenna optimization that is accomplished by solely adjusting the tilt of an antenna is limited. And, since azimuth adjustments for antenna sectors are difficult to adjust manually and are not available by electromechanical means, site planning personnel have not been able to accurately compensate for changes in tower and site parameters.

Abstract: A satellite locator system used with a motor home has a parabolic reflector antenna dish, feedhorn and signal converter mounted on a turntable supporting electronic controls and elevation and azimuth motors operable to rotate the turntable and change the elevation of the dish to locate and target a satellite. A plastic dome mounted on a base plate attached to the roof of the motor home encloses the dish, feedhorn, signal converter, turntable, electronic controls, and elevation and azimuth motors. The dome has an inner semi-hemispherical surface located close to the signal converter to improve the signal strength. A remote console wired to the electronic controls is operable to initiate the satellite search and monitor the status of the satellite search.

Abstract: An apparatus and method for mounting a reflector antenna system on an outer surface of an aircraft which minimizes a swept arc of a main reflector. This allows the effective frontal area of the main reflector to be reduced such that a radome with a smaller frontal area can be employed to cover the antenna system. The preferred embodiments make use of a platform which rotates the main reflector about an azimuthal axis which is disposed forwardly of an axial center of the main reflector. In one embodiment, the azimuthal axis is located in a plane extending between the outermost lateral edges of the main reflector. In another embodiment the azimuthal axis is located forwardly of the outermost lateral edges of the main reflector.

Abstract: An antenna assembly for operation on a moving platform includes a base to be mounted on the moving platform, an azimuthal positioner extending upwardly from the base, and a canted cross-level positioner extending from the azimuthal positioner at a cross-level cant angle canted from perpendicular. The canted cross-level positioner may be rotatable about a cross-level axis to define a roll angle resulting in coupling between the azimuthal and canted cross-level positioners. The antenna assembly may also include an elevational positioner connected to the canted cross-level positioner resulting in coupling between the elevational and the azimuthal positioners because of the roll angle. An antenna may be connected to the elevational positioner. A controller operates the azimuthal, canted cross-level, and elevational positioners to aim the antenna along a desired line-of-sight and while decoupling at least one of the azimuthal and canted cross-level positioners, and the azimuthal and elevational positioners.

Abstract: A device for aiming a directional device, such as a beam transmitter, mounted on a platform having a platform roll axis, the device having a device roll axis and a device nod axis, wherein the device roll axis is substantially different from the platform roll axis. Also a method for aiming a directional device, such as a beam transmitter, mounted on a platform having a platform roll axis by providing a device of the present invention, aiming the directional device by changing the aim of the directional device about the device roll axis and about the device nod axis; and, if as a result the device roll axis approaches coincidence with the aimed direction, rotating the platform about the platform roll axis.

Abstract: A method of changing an antenna pattern in a radio apparatus and a radio apparatus comprising a planar antenna structure with a first and a second plane are provided. In the solution both planes are arranged to act as a radiator plane and as a ground plane and the apparatus comprises means for interchanging the usages of the planes.

Abstract: Methods for aligning a satellite reflector with an antenna that has a feed/LNBF assembly. The feed/LNBF assembly is electronically coupled to a set top box which is electronically coupled to a television that has a television speaker. A transmitter is placed adjacent the television speaker. The speaker transmits the audio tones emitted by the television speaker which are indicative to the alignment of the antenna with a satellite to a speaker located adjacent to or attached to the antenna or antenna support structures.

Abstract: A satellite locator system used with a motor home has a parabolic reflector antenna dish, feedhorn and signal converter mounted on a turntable supporting electronic controls and elevation and azimuth motors operable to rotate the turntable and change the elevation of the dish to locate and target a satellite. A plastic dome mounted on a base plate attached to the roof of the motor home encloses the dish, feedhorn, signal converter, turntable, electronic controls, and elevation and azimuth motors. The dome has an inner semi-hemispherical surface located close to the signal converter to improve the signal strength. A remote console wired to the electronic controls is operable to initiate the satellite search and monitor the status of the satellite search.

Abstract: Apparatus for controlling the rotational position of a dipole antenna (10) to compensate for roll and pitch movements of an unmanned air vehicle (UAV). The antenna (10) is connected to a dual-axis roll and pitch antenna mount (26), the rotational position is controlled by a pair of motor position control and feedback circuits (20 and 32). Roll error and pitch error signals (12 and 14) obtained from gyro systems in the UAV are subtractively combined with roll and pitch position signals, to generate control signals to be applied to rotate the antenna mount in a way that compensates for roll and pitch movements of the UAV, and effectively isolates the antenna mount from roll and pitch movements of the UAV. The dipole antenna (10), therefore, has its radiation pattern and polarization direction aligned with ground-based antennas, thus providing higher gain, increased range and more reliable performance.

Abstract: The invention relates to a steerable antenna platform including two independently controllable motors for rotating a flat plate or a parabolic dish antenna about two perpendicular axes. The antenna platform includes a semicircular yoke rotatable about a fixed axes with bearings mounted on either end thereof for pivotally supporting the antenna. The antenna platform also includes a ball joint for supporting the center of the antenna, enabling a reduction in the requirements of the two motors.

Abstract: The present invention is concerning an element antenna to construct an efficient antenna system, which is able to control mechanical movement of micro-strip patch antenna and to control electrical phase of signal. The movement of an element antenna is come from movement of a platform on which the element antenna is formed. The platform is made of dielectric material and able to move independently from base. The element antenna can be controlled to any direction. An antenna patch has magnetic material layer such as nickel on the backside. The antenna patch is driven by magnetic force.

Abstract: A satellite locator system used with a motor home has a parabolic reflector antenna dish, feedhorn and signal converter mounted on a turntable supporting electronic controls and elevation and azimuth motors operable to rotate the turntable and change the elevation of the dish to locate and target a satellite. A plastic dome mounted on a base plate attached to the roof of the motor home encloses the dish, feedhorn, signal converter, turntable, electronic controls, and elevation and azimuth motors. The dome has an inner semi-hemispherical surface located close to the signal converter to improve the signal strength. A remote console wired to the electronic controls is operable to initiate the satellite search and monitor the status of the satellite search.

Abstract: A multifunction printed antenna for wireless and telematic applications. In one embodiment, GPS and satellite radio patch antenna elements are printed on one side of a printed circuit board and AMPS, PCS, GSM and terrestrial radio slot antenna elements are etched in a ground plane on an opposite side of the same printed circuit board. In an alternate embodiment, the GPS and satellite radio patch antenna elements are elements mounted on one printed circuit board and the AMPS, GSM, PCS and terrestrial radio slot antenna elements are etched in a ground plane on another printed circuit board rigidly secured orthogonal to the GPS and satellite printed circuit board. The AMPS, GSM and PCS circuit board can be curved to reduce the nulls at the edges of the circuit board. Further, the edge of the AMPS, GSM and PCS circuit board that contacts the GPS and satellite radio circuit board can have a saw-tooth pattern so that edge currents are reduced.

Abstract: A multi-reflector antenna array capable of simultaneously transmitting and receiving communication signals at Ku-band frequencies is mounted on an exterior surface of an aircraft. The antenna array provides four cassegrain reflector antennas mechanically connected together in a group capable of being simultaneously mechanically scanned. A common support structure fixes the antennas with respect to each other. A drive mechanism and directional azimuth and elevation motors control the position of the array. The aerodynamic drag of the array is minimized using four antennas rather than a single large diameter antenna. Each antenna is positioned on a common horizontal centerline. Two centrally located antennas are positioned between two smaller diameter antennas. The antennas and positioning equipment are both mounted for rotation within a radome. A corporate power combiner/divider is provided to adjust both an amplitude and a phase of each antenna signal.

Abstract: An alignment mechanism to assist in antenna alignment is described. The alignment mechanism has a first attachment element for removably attaching to an antenna mounting member, a threaded sleeve member affixed to the first attachment element, a threaded bushing for threadably engaging the threaded sleeve member, and a handle member provided for rotating the threaded bushing. A second attachment element is provided for removably attaching to an antenna mounting base member. The second attachment element is operatively connected to the threaded bushing. A biasing member is adapted for biasing the first attachment member apart from the second attachment member. An adjustment member is threadably connected to the second attachment element and operatively connected to the threaded bushing, the adjustment member for selectively adjusting an axial distance between the first attachment member and the second attachment member.

Abstract: A satellite locator system used with a motor home has a parabolic reflector antenna dish, feedhorn and signal converter mounted on a turntable supporting electronic controls and elevation and azimuth motors operable to rotate the turntable and change the elevation of the dish to locate and target a satellite. A plastic dome mounted on a base plate attached to the roof of the motor home encloses the dish, feedhorn, signal converter, turntable, electronic controls, and elevation and azimuth motors. The dome has an inner semi-hemispherical surface located close to the signal converter to improve the signal strength. A remote console wired to the electronic controls is operable to initiate the satellite search and monitor the status of the satellite search.

Abstract: Disclosed is a multiple antenna, and/or gimbaled antenna system mounting system for maintaining electromagnetic signal reception means of an antenna system present in a remote unit in a global positioning system (GPS) based system for continuous electronic monitoring and tracking of monitored individual(s) from a central control station (CCS), in an essentially constant desired orientation with respect to an earth orbiting satellite source of electromagnetic signals, when, in use, change occurs in the orientation of a structural frame element of the remote unit to which the antenna system is, via the multiple and/or gimbaled antenna system mounting system, mounted.

Abstract: An antenna system adapted to be mounted on an exterior surface of a mobile platform and having a reduced overall height to reduce aerodynamic drag caused by the antenna system. The antenna system includes a movable platform disposed concentrically within an annular stationary platform. The movable platform includes a slip ring assembly formed on its lower surface which is in physical contact with a brush assembly supported from a lower surface of the stationary platform. By locating the slip ring assembly and the brush assembly adjacent the lower surface of the movable platform, the overall height of the antenna is reduced. Reliability is also improved since contaminants are less likely to accumulate on the slip ring assembly due to its presence on the lower surface of the movable platform.

Abstract: The elevation angle and azimuth angle and the required angles of rotation for the first antenna 33 and the second antenna 34 are calculated using predetermined calculating means. The elevation adjustment mechanism and azimuth adjustment mechanism and rotating mechanisms of the first antenna 33 and the second antenna 34 are controlled so that the first antenna 33 and the second antenna 34 will be pointed toward respective communication targets T1 and T2 (the first satellite and the second satellite).

Abstract: An antenna arrangement includes an antenna reflector (10), a transceiver element (11) and a signal detection unit (12) having a signal converter (121-122) and a computing unit (123) for generating in response to incoming signals control signals for controlling the alignment of the antenna reflector (10) with a target object. The signal converter (121-122) is adapted to reduce its bandwidth automatically and incrementally from a requisite maximum frequency range to a narrow band frequency range. Changes in the direction of the antenna reflector are detected through the medium of a movement detection unit (13) that includes 3d-sensors (131, 132, 133). Mechanical control of the alignment direction of the antenna reflector (10) is effected with the aid of a drive unit (15).

Abstract: An antenna system is provided for a satellite. This may include a main reflector (100), a subreflector (110), a boom including a first boom component (88) to support said main reflector and a second boom component (86) to support the subreflector. The first boom component may include a first main support (130), a fitting (150), and a second main support (140). The fitting may couple the first main support and the second main support. A positioning mechanism (120) may be provided within the fitting to support the main reflector. The positioning mechanism may be capable of adjusting a position of the main reflector.

Abstract: A stratospheric platform communication system (10) having antenna boresight angles (EL, AZ) that can be adjusted by an adjustable payload antenna (40) according to the requirements of a specific application. The present invention provides an efficient use of available resources by allowing platform systems (10) and GEO satellite systems to share the radio frequency spectrum without interference, and improves the coverage area provided by a stratospheric platform system by allocating stratospheric platforms (12) to specific coverage areas in combination thereby increasing coverage capacity in high traffic areas.

Abstract: Portable alignment devices for orienting a receiver such as an antenna in a desired elevation and methods for orienting a receiver in a desired elevation orientation. In other embodiments, portable alignment devices for orienting a receiver in a desired elevation orientation and in a desired azimuth orientation and methods for orienting an antenna in desired elevation and azimuth orientations.

Abstract: There is disclosed an antenna apparatus used for satellite communication or the like and including an antenna rotating in an azimuth angle direction and an elevation angle direction, which can be miniaturized without using a slip ring for ensuring electrical connection between a stationary portion and a movable portion. A rotary member 3 is rotated by rotation of a motor 5 to rotate an antenna 11 about an azimuth axis. On the other hand, a motor 9 is rotated to rotate a rotary member 7, and a relative rotary shaft 14 is rotated by relative rotation between the rotary member 3 and the rotary member 7. The rotation of the relative rotary shaft 14 rotates the antenna 11 about an elevation angle axis by rotation transmission through a bevel gear 18 and a bevel gear 19.

Abstract: A microwave reflector antenna comprises a rotary plate that rotates about an azimuth axis. At least one elevation cradle is attached to the rotary plate to provide an elevation axis and rotates about the azimuth axis with the rotation of the rotary plate. The at least one elevation cradle has a curved guide with a plurality of ball bearings to facilitate the rotation of the reflector about the elevation axis. A reflector travels along the at least one cradle as the reflector rotates about the elevation axis. The reflector rotates about the azimuth axis with the rotation of the at least one cradle. The rotation of the reflector about the azimuth axis and about the elevation axis define a swept volume of the reflector. The at least one cradle is positioned on the rotary plate so that the at least one cradle is within the swept volume of the reflector.

Abstract: A satellite locator system used with a motor home has a parabolic reflector antenna dish, feedhorn and signal converter mounted on a turntable supporting electronic controls and elevation and azimuth motors operable to rotate the turntable and change the elevation of the dish to locate and target a satellite. A plastic dome mounted on a base plate attached to the roof of the motor home encloses the dish, feedhorn, signal converter, turntable, electronic controls, and elevation and azimuth motors. The dome has an inner semi-hemispherical surface located close to the signal converter to improve the signal strength. A remote console wired to the electronic controls is operable to initiate the satellite search and monitor the status of the satellite search.

Abstract: A method of pointing a fixed antenna (2) having a reflector (10) and at least one transceiver source suitable for aiming at a plurality of satellites situated between two extreme positions S1, S2 on a geostationary orbit (8).

Abstract: A gimbal system is used for supporting and enabling the orientation of a circular satellite antenna dish in azimuth and elevation. The gimbal system includes a hoop structure, the ends of which are connected to the antenna dish. The dish is pivotally supported on the hoop structure for pivotal motion about its “X” axis. The hoop structure is mounted for rotation about the “Y” axis of the dish. The central axis of the hoop is coincidental with the central axis of the antenna. The hoop is driven by means of a motor to rotate the hoop and the antenna dish along therewith between a first position whereat the “Y” axis of the antenna is in its normal initial at rest (Y axis zero position) and a second position wherein the “Y” axis is rotated approximately eighty degrees from this initial position. A second motor is coupled to the antenna at one of the ends of the hoop structure to drive the dish about its “X” axis.

Abstract: An antenna that has an alignment configuration for aligning the antenna with a satellite. In one embodiment, the antenna includes an antenna reflector that has a centerline and a front surface and a rear surface. A reference plane is defined on the rear surface that is perpendicular to the centerline of the reflector. The reference plane is used in connection with alignment devices for orienting the antenna reflector in desired azimuth, elevation, and skew orientations.

Abstract: A steerable antenna system for transmitting and/or receiving an electromagnetic signal to a relatively moving target includes a hyperbolic subreflector secured to a frame rotatably mounted on a support structure via a first motor and a feed source located at a first focus of the subreflector for illuminating the same. The source, fixed to the structure, has a source axis pointing at the subreflector. A parabolic reflector having a focus in common with the second focus of the subreflector to transfer the signal between the same and a planar reflector is secured to the frame and has a beam axis. The planar reflector having a normal axis intersecting the beam axis with an angle is rotatably mounted on the frame via a second motor to transfer the signal between the parabolic reflector and the target. The system may include a controller connected to the motors to control the system to steer at the target anywhere within a full spherical angular range.

Abstract: An antenna apparatus is provided with two parabolic antennas which are attached to an X-axis and adapted to independently rotate about the X-axis. The X-axis is supported between both ends of a support rail in the shape of a semicircular arc to pass through the center of the arc. The support rail is adapted to slide and is thereby permitted to rotate about the central axis of the arc as a Y-axis. The support rail is placed on a rotating base 13 adapted to rotate about a Z-axis. The entire apparatus is covered with a radome. Each of the parabolic antennas is therefore permitted to rotate about each of the X, Y and Z-axes. By controlling each axis driving mechanism according to the locations and orbits of two satellites, each of the parabolic antennas is permitted to track a respective one of the satellites.

Abstract: An antenna system suitable for use in communicating with satellites has multiple antenna units adjacent to each other and oriented in the same direction. These antenna units are driven together in tandem in altitude and azimuth by a common drive unit. The signals received by the antenna are combined together in an in phase relationship in a combiner unit to provide received signals which reinforce each other.

Abstract: A device is provided for the accurate positioning of an antenna of a satellite in space, in which the antenna is fastened to a plate mounted on gimbals, with the plate capable of being swiveled around two axles supported in bearings and extending vertically to one another. A rotary drive is provided for each axle, said rotary drive consisting of an arm of a lever, said arm being connected to the axle, and a linear drive that freely affects the arm.

Abstract: An antenna mast for a multi-satellite system includes a base mounted at a lower end of the mast. The base is intended to be mounted to a surface. The antenna mast has a first adjustment mechanism that allows the mast to be adjusted in a y-direction. The antenna mast also has a second adjustment mechanism that allows the mast to be adjusted in an x-direction such that the uppermost portion of the antenna mast is straight.

Abstract: A collapsible, steerable antenna system 10 is configured for rapid deployment that is highly accurate and sophisticated, yet easy to assemble. The antenna system 10 includes a pod mount assembly 20, a steering head controller assembly 40, a back frame 60, a dish assembly 100, a feed leg assembly 120, a horn mount assembly 160, and a horn assembly 180. The pod mount assembly 20 includes a plurality of ground engaging pod legs and a telescopic shaft which lifts and supports the controller assembly 40. The controller assembly 40 selectively engages with the back frame 60 and aligns the dish assembly 100 via the back frame 60. The back frame 60 engages and supports the dish assembly 100 to help minimize parametric distortion of the dish assembly 100. The dish assembly 100 includes a plurality of wedge-shaped pieces which connect to form the dish assembly. The feed leg assembly 120 includes a main feed leg and side feed legs. The horn mount assembly 160 connects the horn assembly 180 to the main feed leg.

Abstract: The present invention may find particular application in antenna systems, such as those used in cellular communication systems.

Abstract: An antenna system for a satellite including a gimbal device, such as a bi-axial gimbal, that employs a first uni-axial gimbal providing movement in one direction and a second uni-axial gimbal providing movement in a perpendicular direction. The first gimbal is mounted to a platform bracket, which is part of a moveable platform. The first gimbal is also mounted to the second gimbal, and the second gimbal is mounted to a satellite bracket secured to the satellite. Both a receive antenna array and a transmit antenna array are mounted to the moveable platform. Therefore, movement of the first gimbal causes the combination of the receive and transmit antenna arrays to move in one direction, and movement of the second gimbal causes the combination of the receive and transmit antenna arrays to move in the perpendicular direction.

Abstract: A reflector antenna is disclosed with a stator portion and a rotor portion which is supported for rotation relative to the stator portion about a rotation axis. A reflector that is connected by an electrical connection with the stator portion, is secured to the rotor portion. The electrical connection is formed as a flexible connecting cable, wherein one end of the cable is attached to the rotor portion and the other end is attached to the stator portion. A segment of the connecting cable rotates with half the rotation speed of the rotor portion and with the same rotation direction as the rotor portion.

Abstract: Variable beamwidth antenna systems for use on spacecraft that is capable of changing their beamwidths while the spacecraft in on orbit. The variable beamwidth antenna systems include a main reflector, a subreflector, a feed horn, a main reflector displacement mechanism and a feed horn (or subreflector) displacement mechanism. For broaden the beamwidth, the RF feed horn and the subreflector are moved close together by proper distance. The main reflector is moved away from the subreflector along a line through centers of their respective surface by a distance given by a predetermined equation. Another embodiment of the present invention provides for a zoom contour beam antenna system that radiates a contour beam and whose beam is variable or zoomable.

Abstract: The invention relates to an alignment apparatus, with which an instrument to be aligned is mounted on a supporting structure (S) and which comprises a body section (10) mounted on the supporting structure, vertically and horizontally alignable alignment sections (20, 30), of which the first is mounted on the body section and the second is used for mounting the instrument to be aligned, and horizontal and vertical alignment means (40, 50) to align the alignment sections. To facilitate the alignment, the alignment means comprise threaded bolts (40, 50) connecting sections turning in relation to each other, which bolts are arranged to turn in each section turning in relation to each other so that each end (41, 42 and 51, 52) of the threaded bolts projects from the turning sections and each projecting end is provided with means (43, 44, 53, 54) enabling the turning of the threaded bolts.

Abstract: A reflector-type microwave antenna having a paraboloidal reflector having a focal point and a feed horn located at the focal point. The feed horn is adapted to launch microwave signals onto the reflector and to receive microwave reflectors from the reflector. The reflector is mounted onto a surface by a mounting assembly comprising a mounting pipe in a fixed location relative to the mounting surface, a mounting cylinder rotatably affixed to the mounting pipe, and a mounting collar affixed to the mounting cylinder. A mounting plate is affixed to both the mounting collar and to the reflector such that a movement of the mounting collar causes the reflector to move, as well. The mounting assembly also has an azimuth coarse adjuster which engages the mounting cylinder such that the mounting cylinder may be rotated in azimuth relative to the mounting pipe. Once the mounting cylinder is in position, a locking mechanism is utilized to lock the mounting cylinder in position.

Abstract: A coupling including a ring member attached to a housing, the ring member having a through-hole and a ring axis; a body connected to the ring member by a pair of yielding but axially inextensible members preventing rotation of the body about the ring axis and preventing movement of the body in the direction of the axes of the inextensible members; and flexure plates which allow displacement of the ring member with respect to the housing in the direction of the axes of the inextensible members to thereby allow the body five degrees of freedom of movement with respect to the housing but not rotation about the ring axis.

Abstract: An antenna system includes a first portion and a second portion. The first portion and the second portion form an antenna loop. The first portion may be etched on a printed circuit board. The second portion may be coupled with the first portion or extend from the first portion. The first portion and the second portion each may have one or more turns. Further, the second portion of the antenna loop resides in a three-dimensional geometric space that is different from the first portion of the antenna loop. The antenna system is particularly well suited for electronic devices having a confined internal space, for example, a cordless pointing device, a cordless gaining device, or a cordless camera device. A method for designing an antenna system is also disclosed.