Abstract: A satellite antenna alignment device is provided which includes a support which may be selectively removably mounted on the underside of the support arm of the antenna. The alignment device includes a pivotal plumb bob having a chart positioned therebelow which is provided with skew angles and elevation angles to enable the antenna to be quickly and easily elevated to the proper elevation and skewed to the proper skew angle.

Abstract: An antenna of the wireless LAN card includes a body with an antenna on one side, a connecting base is on one side of the external wireless LAN card, a pivot pin is on top of the connecting base; a cross pivot wraps the pivot pin. The cross pivot composes of a tube with a pintle on both sides. A ball tip is on the bottom of the antenna, a hole is inside the ball tip, a joint hole each is on both sides of the hole. The two pintles of the cross pivot are inserted into the joint hole of the ball tip of the antenna. The structure makes the direction of the antenna of the wireless LAN card adjustable for best signal transmission and receiving result.

Abstract: A portable communication device includes a rotating member and a latching mechanism which employs a magnet means and a quantity of magneto-rheological fluid (“MR” fluid) or electro-rheological (“ER”) fluid therein to latch the rotatable member against the primary body of the portable communication device when a magnetic or electric field is positioned proximate to the MR or ER fluid. The rotating member can be a low-profile flip and/or antenna. The magnet means can be an electromagnetic field or at least one translatable permanent magnet. Additionally, a portable communication device with a translating antenna and an antenna receptacle and elbow also includes a quantity of magneto-rheological fluid therein. The device can also include an externally accessible latch release which controls the application of the magnetic field to the MR fluid (or electric filed to the ER fluid). Associated latching mechanisms employ rheological fluid and a magnetic or electric field source.

Abstract: A microcell having a plurality of antennas attached to an upper portion thereof is arranged to move along an interior of a guyed latticework tower. As the microcell is being raised, the antennas are in a stowed position within the confines of the tower structure. When the microcell reaches the top of the tower, the antennas are deployed by deploying mechanisms which utilize the vertical upward motion of the microcell to produce outwardly directed movement of the antennas to a deployed position. In the deployed position, the spacing between the antennas is greater than the distance between adjacent stanchions of the tower structure. The deploying motion is accomplished without additional driving motors, but is instead produced by the upward movement of the microcell driven by a winch and cable arrangement.

Abstract: A roof-mounted dish antenna housing comprising a dome which encloses a dish antenna, where the dish antenna is connected to the housing by pivoting bracket members mounted onto an annular mounting rim inside the dome, where the dish antenna can be rotated relative to the fixed dome in the azimuthal direction and angularly positioned relative to the fixed dome between the horizon and zenith by pivoting the attachment member connected to the dish antenna relative to the attachment member connected to the mounting rim. Part of the dome may be removable to allow for access from the external side of the roof, and vents may be provided to allow for air circulation.

Abstract: An apparatus for mounting a satellite dish having a mounting bracket in a window jam opening for a window frame with no physical intervention in the frame casing or jams. A mounting board having a length corresponding to the width of the window jam opening and having a width corresponding to the width of the mounting bracket is provided. At least one tensioning member rigidly is connected to said mounting board such that tensioning the tensioning member releasably fastens said mounting board within the window jam opening. In the preferred embodiment, two tensioning members are provided. The apparatus is positioned on the outside of the window. The window can be opened and closed without interference from said apparatus. The mounted board features at least one slot such that water is prevented from accumulating behind said mounting board and the window and wherein a cable from the dish may be inserted therethrough.

Abstract: A satellite dish antenna alignment device is described for use with a commercially available satellite dish. Said device enables an installer of such a satellite dish to mount the mast assembly in such a way that the satellite dish antenna is properly aligned with respect to a particular satellite. The alignment device is removably placed over the mast assembly arm of the satellite dish antenna and includes a bubble level, a map and a compass for indicating the placement of the directional position of the mast assembly arm for permanent affixation to the mounting surface.

Abstract: An easily installable signal enhancement addition for a satellite dish, and method for using an installed dish as a reference that allows installation of the enhancement without re-acquiring the satellite signal or re-aiming the dish. In one variation, the enhancement includes a reflector addition fitted with fasteners that locate the reflector against the existing dish, and use of the original feed horn, which is relocated using a support extension. This variation avoids the “shadow” of the feed horn and its support arm, and minimizes the reflective surface area at the lower end of the dish, which reduces collection of such interfering material as snow, rain, and debris. In variations using increased reflector size, the enhancement reduces loss of signal during inclement weather or in other situations in which the satellite signal is partially blocked. In one variation, the added reflector is a standard parabolic reflector superimposed over the original reflector, or replacing it on its mount.

Abstract: A rotation apparatus for a dish antenna provides a system for easily adjusting the dish antenna to a precise receiving position. The rotation apparatus includes a dish bracket which is fixed to the back of the dish antenna. The dish bracket includes a plurality of circular grooves and a concentric axle center. An elevation bracket includes a pair of wings and a bottom. The wings are parallel, and the bottom is perpendicular to the wings. Each wing pivots about an axle which passes through a first portion of each wing. A second portion of each wing includes a guide groove to adjust a elevation angle of the dish. The bottom includes a central axle hole and a plurality of holes. The central axle hole is coupled to the concentric axle center. After the dish is rotated to a selected position, the plurality of holes are secured to the circular grooves using a plurality of screws.

Abstract: The present invention relates to a system for mounting a satellite antenna in a manner to facilitate adjustment of the elevation angle without the use of tools or the need of significant artificial light. The system includes a movable bracket pivotably mounted to a fixed bracket. The satellite antenna is mounted to the movable bracket. A manually operable connector is connected to the movable bracket and the fixed bracket to permit manual adjustment of the elevation angle.

Abstract: A perimeter truss structure (103) that may be used, for example, to support an RF reflector may include multiple deployed bays (200) arranged in a ring. Each deployed bay (200) includes a first upper horizontal support member (726) attached to a first vertical support member (706) and collapsible on a first joint (728) translating on a second vertical support member (708), as well as a first lower horizontal support member (714) attached to the second vertical support member (708) and collapsible on a second joint (744) translating on the first vertical support member (706). The first and second vertical support members (706, 708) define a ring inside (122) and a ring outside (124). The first upper horizontal support member (712) is disposed on one ring side (e.g., the outside), while the first lower horizontal support member (714) is disposed on the opposite ring side.

Abstract: An antenna detent and latching mechanism (300) for coupling to a radiotelephone and mating with a radiotelephone antenna stem (200) is provided. The antenna detent and latching mechanism (300) includes a bottom plate (380) for mounting the mechanism in the radiotelephone, a bearing plate (360) coupled to the bottom plate, a detent follower (373) coupled to the bearing plate (360) and engaging a plurality of detents (366, 368, 370) in the bearing plate (360), and a detent spring (374) coupled to the detent follower (373) and providing force against the detent follower (373). The detent spring (374) is preferably a substantially flat leaf spring. The detent follower (373) preferably has a plurality of detent spring contact surfaces (377, 378). The detent spring (374) may be supplemented with additional detent springs (375).

Abstract: An antenna pointing system automatically aligns an antenna with a geo-synchronous satellite using a Ku band signal, which has a relatively broad bandwidth, with sufficient accuracy for Ka band signal transmission, which has a relatively narrow bandwidth. Initially, the antenna is pointed at the selected satellite so as to receive the Ku band signal. The system obtains a series of signal strength readings over a predetermined azimuth (or elevation) region, such as plus/minus two degrees, from which a new peak location is selected. Signal strength data is then obtained over a predetermined elevation (or azimuth) region. Another signal peak location is selected based on the elevation data. Azimuth and elevation data are alternately collected for refining the peak of the Ku signal so as to optimize Ka signal transmission capability.

Abstract: It is an object of the present invention to provide a wide range azimuth (AZ) driving system for an antenna which has a simple structure and enables costs to be lowered and a producing time to be short. A first worm reducer which is connected to a worm shaft of a motor and a second worm reducer which is intermittently driven by the worm shaft and a clutch are provided, and gears of the two worm reducers engage with a large gear which is arranged to an antenna yoke. Further, one motor can arbitrarily control backlash and both wide range driving at a high speed and tracking driving with high precision are simultaneously possible by properly controlling the clutch and the motor.

Abstract: When communication is performed simultaneously with two moving bodies such as a satellite, an antenna construction in which a plurality of antennas do not become an obstacle to each other's communication and the direction (the azimuth angle and the elevation angle) adjusting mechanism thereof can be realized with a simple construction. The two antennas have another movable portion (a rotation mechanism with respect to the axis) independently, while sharing the direction adjusting mechanism for the azimuth angle and the elevation angle. The rotation axis of the rotation mechanism of each antenna faces the same direction on the same plane, and each rotation mechanism is separately arranged in an area defined by a plane obtained by extending the axis of the azimuth angle adjusting mechanism toward the axial direction of the elevation angle adjusting mechanism.

Abstract: An apparatus is described for maintaining a GPS antenna element at a predetermined orientation. The apparatus includes a holder configured to support the GPS antenna element. The holder is pivotally coupled to a base structure and is configured to pivot with respect to a pivot axis. When the force of gravity is applied to the holder, it causes the GPS antenna element supported by the holder to be maintained at the predetermined orientation even when the base structure to which the holder is coupled changes its orientation. In one embodiment, an extra weight is provided on one side of the holder such that the force of gravity applied to the extra weight will cause the antenna element supported by the holder to be maintained at a predetermined angular orientation.

Abstract: A multi-position antenna assembly for use in portable wireless communication devices is disclosed. The assembly includes an antenna, a printed circuit board operative to electrically couple the antenna to a host device, a disk joint assembly, coupled to the antenna, operative to rotate the antenna about two axes of rotation, and an assembly housing which at least partially contains the printed circuit board and the disk joint assembly, and is adapted to be removably coupled to the host device. The disk joint assembly includes a joint housing having a projection piece which passes through the joint housing that enables the antenna to be positioned between alternating operating and storage positions within a PC card.

Abstract: The present invention provides two approaches for eliminating a keyhole problem associated with an azimuth-elevation gimbal antenna which is a problem that occurs when the antennae is tracking a satellite vehicle that is substantially directly overhead, i.e., the satellite vehicle is near the zenith position. At such a point, the azimuth motor of the gimbal antenna must turn very rapidly when the satellite passes through such near zenith position. A first approach involves tilting up one of the elevation axis joints when the antenna points at or near its zenith position such that the pointing angle may be altered by a predetermined angle, for example around 0.5° to 1°, from the zenith position. A second approach involves tilting the secondary reflector of the cassegrain antenna such that the pointing direction of the antenna may be altered by a predetermined angle.

Abstract: Two-axis positioning apparatus utilizes a yoke including a hub mounted on a base for rotation about a first axis, an integral bight member extending radially away from the hub in opposite directions and a pair of upstanding legs distant from the hub extending away from the bight member at spaced apart locations. A load, such as an antenna, extends between and is mounted on the upstanding legs of the yoke member for rotation about a second axis distant from the bight member. A first drive system rotatably positions the yoke about the first axis and a second drive system intermediate the yoke and the load includes a first drive component rotatable about the first axis for rotatably positioning the load about the second axis as a function of the difference in angular movement of the support member about the first axis and the angular movement of the first drive component about the first axis.

Abstract: The present invention comprises an antenna mount including at least a first anchoring portion having an open region formed therethrough wherein the open region is sized to accommodate a mounting structure such as a pole, mast, or other such structure. The antenna mount may include a locking device configured to releasably secure the antenna mount about a mounting structure disposed within the open region of the first anchoring portion. The locking device may comprise a first locking structure adjustably coupled to the anchoring portion, the first locking structure adjustable from a first position peripherally located with respect to a centerline of the open region to a second position adjacent the periphery of the open region, the first locking structure configured to releasably engage a mounting structure accommodated within the open region when the first locking structure is at the second position.

Abstract: An architecture deploying an energy-directing mesh so as to conform with a prescribed surface includes a plurality of radially extending support structures. Cords extend between the support structures in a generally circumferential fashion, and have attachment locations for the energy-directing material offset from the support structures. Each of a plurality of outermost intercostal cords is retained in tension between the support structures and is configured to substantially conform to the perimeter of the prescribed surface. Flexible intercostal compression reactor members are arranged to be placed in tension in a generally arcuate shape between adjacent support structures. Flexible radial compression members are placed in compression between the intercostal compression reactor members and the outermost intercostal cords, so that the outermost cords substantially conform with the perimeter of the prescribed surface.

Abstract: A mounting assembly allows a wireless interface device to be connected to a fixed object, such as house or building's exterior wall. The mounting assembly includes three interconnected brackets. The three brackets allow the wireless interface device to be selectively positioned horizontally and vertically relative to the exterior wall. By adjustment of the bracket, the wireless interface device can be accurately aimed toward a master transmitter/receiver. Once the wireless interface device is properly sighted or aimed, the wireless interface device can communicate with the master transmitter/receiver to establish internet access, telephone service, and/or television service to the house or building.

Abstract: An antenna (30) includes a gimbal structure (32) having a base (46) and first and second pivoting devices (52, 54) defining a first rotational axis (40). A reflector (36) is mounted to the pivoting devices for rotating about the first axis. Signals are routed from the base to a connector (68) mounted to the reflector with a cable (10) which is coiled around a second rotational axis (50) of the antenna.

Abstract: An antenna arrangement is provided for use in a vehicle. It comprised an antenna element (601-606, 701a-704f, 901-907, 1203) and means (600, 801, 802, 803, 804, 900, 910, 1200, 1201, 1202) for moving the antenna element in relation to the vehicle. The means for moving the antenna element are arranged to move the antenna element in relation to the vehicle into a direction which is opposite to a direction of movement of the vehicle.

Abstract: An antenna indexing and retaining mechanism (100) for coupling an antenna stem (117) to a transceiver (701) is provided. The mechanism (100) includes a plurality of plates disposed in a first plane (173) substantially perpendicular to an axis (174) of the antenna stem (117), a first plate (102) of the plurality of plates to engage a first antenna stem surface (144) of the antenna stem and a second plate (103) of the plurality of plates to engage a second antenna stem surface (145) of the antenna stem. The mechanism (100) also includes a release plate (106) having projections (124, 125) extending into the first plane (102), the projections (124, 125) causing the plurality of plates to be disengaged from the antenna stem (117) upon translation of the release plate (106).

Abstract: A deployable antenna reflector structure (10) that provides a reduced number of components without compromising mechanical stability or deployment reliability. The structure (10) uses a truss hoop (21) with identical elements (20) and parallel pivot axes (30) to transition from a stowed position (50) to a deployed position (51). The use of identical elements (20) provides reduced manufacturing and assembly costs due to the reduction in components and added simplicity of the design. The truss hoop (21) achieves mechanical stability by making use of a two-dimensional element design having vertical portions (23) and horizontal portions (22) located in the same plane. Each parallel pivot axis (30) is defined by two pivot points. The first pivot point (31) connects horizontal portions (22) of adjacent identical elements (20) and the second pivot point (31) connects vertical portions (23) of adjacent identical elements (20). The structure (10) also provides a reflector (40) and a deployment control mechanism.

Abstract: A secondary universal communication system enables dedicated and independent communications capability between space vehicle payload elements and ground based communications networks. The system may either utilize existing communications satellites as an intermediate network to provide continuous communications with payload elements, regardless of orientation or configuration of the space vehicle, or may communicate directly with ground stations via down link capability. The system has a navigation system and an inertial measurement system to provide antenna pointing and tracking capability to actively track satellites. The secondary universal communications system can provide supplemental and independent communications capacity to the space vehicle's primary communication system.

Abstract: A suspension device for rotatable appliances, such as antennas, of the type which for rotation is connectible with a frame-mounted shaft which extends through a power operated disk or a similar antenna mounting and which, beyond the antenna mounting, has a free end mounted in a stationary part, which is capable of limited motion generated rated by insufficient concentricity between the antenna mounting and the shaft. An angle-transducing device is provided for said shaft. A connector is arranged adjacent to or round the shaft and directs components of force on the stationary part which have arisen owing to sufficient concentricity to merely displacement in the X-Y direction in a plane perpendicular to the shaft, by the connector being displaceably fixed in the X direction to the stationary part and displaceably fixed in the Y direction to the frame, or by the connector being displaceably fixed in the X direction to the shaft and displaceably fixed in the Y direction to the antenna mounting.

Abstract: The invention is a universal replacement antenna assembly for replacing an automobile radio antenna. The antenna assembly includes a universal mounting assembly that fits all cars and trucks and facilitates easy antenna installation. An antenna mast connected to a mounting member having a lower body portion and an upper connecting portion. Pivoting rocker arms pivot from a lower end of the mounting member within a range from an upright, closed position to an open position not exceeding ninety degrees from said closed position. A connecting member is mounted on the antenna mast and is movable with respect to the mast and the mounting member and is connectable with the connecting portion of the mounting member. During installation of the antenna assembly the mounting member and the rocker arms are inserted through a hole in the mounting surface with the rocker arms in the closed position and the connecting member is moved downward and connected to the connecting portion of the mounting member.

Abstract: Antenna mounting bracket assembly having a spine, an upper bracket, a lower bracket and a cam bracket for mounting an antenna on a support structure, such as a vertical pole and for providing adjustment of the antenna's downwards tilt position. The spine provides for the proper spacing and rotational alignment between the upper and lower ends of the accompanying antenna. The cam bracket can allow either analog or digital adjustment of the downwards tilt position of the antenna. The assembly can allow for the installation of the antenna upon the support structure by a single technician.

Abstract: A method and apparatus for linkage adjustment. In an embodiment, the adjustable linkage includes a first component, a second component and locking device. The first component has a plurality of spaced slots and a connector for connecting to an object. The second component also has a plurality of spaced slots and a connector for connecting to a second object. The locking device holds the first component and the second component in a fixed relative position. The components are positioned so a first slot from the first component overlaps with a first slot from the second component. A lever may be inserted through the first slot of the first component and into the first slot of the second component to apply a prying force. The prying force relatively repositions the components such that a second slot from the first component is brought into overlapping relationship with a second slot from the second component.

Abstract: An antenna holder assembly includes a mount fixedly fastened to the shell of an antenna, a holder supported on the mount, the holder having a downward mounting rod inserted into the center through hole of the mount, an end cap fastened to the downward mounting rod to secure the holder to the mount, enabling the holder to be rotated on its own axis, and a spring bushing mounted within the center through hole of the mount around the downward mounting rod of the holder.

Abstract: A bracket mount for precise antenna adjustment includes a lever or mechanical assist to permit slight movements to the antenna simply by manipulating the lever. The adjustable lever may be a built-in cam or yoke, or may be removably attached to the mount and antenna by an anchoring screw which acts to secure the antenna in place once the desired direction is achieved. The bracket mount may further include two adjusting levers, one for adjusting antenna direction in an up/down direction, and the other for adjusting the antenna in a left/right direction.

Abstract: An antenna positioner includes a housing and a hub mounted within the housing. A substantially planar configured support plate is rotatably mounted on the hub. A substantially elongate antenna is pivotally mounted on the support plate. An elevation drive mechanism is mounted on the support plate and interconnects the antenna for pivoting the antenna a predetermined angle and adjusting elevation of the antenna. An azimuth drive mechanism is mounted on the support plate and interconnects the hub and rotates the support plate relative to the hub a predetermined arcuate distance relative to the hub and adjusts azimuth of the antenna. A controller is operatively connected to the elevation drive mechanism and the azimuth drive mechanism and controls the azimuth and elevation drive mechanisms to adjust elevation and azimuth.

Abstract: A biaxially rotational structure for a planar antenna comprises a biaxial base having a vertical direction and a horizontal direction, a vertical shaft assembly disposed at the vertical direction of the biaxial base, the vertical shaft assembly has a rotation limiting member; a support frame pivotally mounted on the vertical shaft assembly, the support frame having a stopper extending downwardly in a manner that the rotation limiting member limits the stopper to rotate within one turn with respect to the vertical shaft assembly; a first resilient member disposed between the vertical shaft assembly and the support frame for exerting a pressing force on the support frame; a horizontal shaft assembly disposed at the horizontal direction; and a second resilient member disposed between the horizontal shaft assembly and the biaxial base for exerting a friction force therebetween.

Abstract: A positioner (or gimbal assembly) for a compact antenna assembly is disclosed. The positioner provides accurate pointing of the antenna assembly (typically a narrow beam radio frequency (RF) radiating assembly) mounted on a rapidly moving platform. The positioner is comprised of a first, second, and third axis assemblies which support the antenna assembly and allow rotation of the antenna assembly about first, second, and third axis. The axis assemblies are arranged so the first, second and third axis are non-orthogonal and intersect at the approximate geometric center of the antenna assembly allowing continuous and independent rotation of the antenna assembly about each axis within a confined volume.

Abstract: An antenna positioner control system and related method is disclosed. The antenna positioner control system includes a housing and a hub mounted within a housing. A support plate is rotatably mounted on the hub. An antenna is pivotally mounted on the support plate. At least one elevation drive servomotor is mounted on the support plate and interconnects the antenna for pivoting the antenna a predetermined angle and adjusting elevation of the antenna. At least one azimuth drive servomotor is mounted on the support plate and interconnects the antenna for rotating the support plate relative to the hub a predetermined arcuate distance for adjusting azimuth of the antenna. An antenna control unit is operatively connected to the elevation drive servomotor and azimuth drive servomotor and includes an elevation control circuit and azimuth control circuit.

Abstract: An antenna and mounting assembly permitting azimuth adjustment of antenna elevation and rotation of the antenna about a polarity axis includes a molded antenna having an integrally molded polarity plate formed on its back side. The polarity plate has a back planar surface perpendicular to the polarity axis and is configured to receive a mounting bracket. A suitable mounting bracket has a polarity portion and an elevation portion generally separated by a boundary line and being substantially perpendicular to each other. The polarity portion has a polarity slot in it and the elevation portion has an elevation mounting hole and an arcuate elevation slot lying along a circle having a center substantially corresponding to the position of the elevation hole. A first mounting member engages the mounting hole and polarity slot to secure the bracket to the polarity plate.

Abstract: Since the mobile satellite communication antenna according to the present invention has the antenna board provided on the top surface of the rotary member in the state in which a part of the antenna board protrudes outward in the radial direction from the outer periphery of the rotary member, the antenna board doubles as a member for preventing the belt from coming off and reduces the number of parts, which can provide an antenna which is inexpensive and compact and is easily assembled.

Abstract: A method for configuring a satellite antenna (20) to receive a downlink signal from a geosychronous orbiting satellite (12) in a satellite communication system (10), comprising the steps of: (a) providing a satellite antenna (20) with a feed positioner mechanism (40) for adjusting the position of a feed device (42), such that the feed device (42) is selectively movably between a focus position (46) and a defocus position (44); (b) defocusing a beam of the satellite antenna (20) by using the feed positioner mechanism (40) to adjust the feed device (42) in relation to a dish component of the satellite antenna (20); (c) pointing the satellite antenna (20) towards the satellite (12), such that the downlink signal from the satellite (12) is received by the satellite antenna (20); (d) optimizing the beam of the satellite antenna (20) in relation to a near center of the downlink signal from the satellite (12); and (e) focusing the beam of the satellite antenna (20) using the feed positioner mechanism (40), thereby c

Abstract: A tracking device comprises a cam-driven actuator arm by which the declination of an earth station dish is caused to vertically oscillate with a sidereal day cycle. In a second embodiment, the tracker comprises a constant velocity joint interposed between the satellite dish and the elevation frame of the antenna mounting structure. The rotation of the constant velocity joint over a sidereal day cycle will result in tracking of the figure eight path.

Abstract: In a collapsible roof mounting for orienting a satellite dish system from below, an upper channel-shaped formation arranged to present a dish-shaped component adjacent one end and an arm formation for the feed horn intermediately thereof and nestable within and interconnected to a lower channel-shaped formation adjacent the other end for swinging movement thereabove, a tubular shaft formation supporting the lower channel-shaped formation centrally thereof from below for rotation about a substantially upright axis, a displaceable linkage including a worm gear interconnected to the upper channel-shaped formation and a worm extending axially of the tubular shaft formation for swinging the upper channel-shaped formation upwardly from the nested disposition and reversely, a handle formation for the tubular shaft formation below the roof for imparting rotation thereto and a crank for the worm located below the handle formation for imparting displacement to the worm and worm gear.

Abstract: A user terminal (110) includes a rotating electronically steerable antenna system (210) which combines coarse mechanical beam steering with fine electronic beam steering to provide full hemispherical coverage and enable hand-offs in a satellite communication system. The antenna system (210) comprises at least one antenna unit (and preferably two antenna units) including a mechanically rotatable base (330), an antenna holder (320) coupled to the mechanically rotatable base, and two electronically steerable antenna subunit (310) mounted on the antenna holder. Antenna system (210) also includes an antenna unit controller (260) adapted to control rotation of the mechanically rotatable base (330).

Abstract: In a cellular telecommunications network, uplink interference, as measured by a base station in a target cell, and co-channel interference, as measured by mobile units in a co-channel cell are reduced by increasing the base station antenna tilt angle. However, increasing the base station antenna tilt angle reduces the effective coverage area of the target cell. To obtain an optimum base station antenna tilt angle, interference reduction and target cell coverage area reduction are quantified for each of a number of candidate base station antenna tilt angles. An interference reduction-to-target cell coverage area reduction ratio can then be established for each of the candidate base station antenna tilt angles. The optimum base station antenna tilt angle can then be identified as the one candidate base station antenna tilt angle that reflects the maximum interference reduction-to-target cell coverage area reduction ratio.

Abstract: A device for angular adjustment of a direction-indicating object of an antenna device such that the direction-indicating object performs a mechanical movement without rotating. The inside of a first end of a rigid tube is rotatably arranged via two bearing devices in relation to a fixed part of the antenna device around an axis of rotation, the fixed part is attached to a foundation. An antenna part of the antenna device includes the direction-indicating object. The antenna part is rotatably arranged via a bearing device on a bevelled outer edge of a second end of the tube around a central axis. The outer edge is bevelled to an intended fixed angle which determines the fixed angular adjustment of the antenna part with respect to the fixed part of the antenna device. A cardan coupling is arranged between the fixed part and the antenna part such that the cardan coupling prevents the antenna part from being able to rotate in relation to the fixed part.

Abstract: A device (10) for mounting a radar antenna to a support structure such as a mast (M) includes a generally U-shaped frame (12). A proximal end (14) of the frame is adapted for securement to the support structure while the frame extends generally horizontally outward from the support structure and terminates at a closed distal end (16). A radar antenna mounting platform assembly (20) has a longitudinal axis (L) and is pivotally connected between the support structure and the distal end of the frame at a position within the U-shaped frame. The device includes means (60) for selectively pivoting the radar platform bi-directionally about its longitudinal axis. The platform is preferably pivotable at least 20.degree. in either direction from horizontal to define an overall arc of at least 40.degree.. The pivoting means is remotely operable, e.g.

Abstract: An antenna includes an aerial sheath, a body and legs pivotally attached to the body. The legs can be pivoted in the body from a storage position in which they are adjacent to the aerial sheath, to a working position in which they extend away from the body in a direction opposite that of the aerial sheath. The legs can support the antenna with the aerial sheath pointing upwards.

Abstract: A satellite antenna alignment device is described for use with a satellite antenna to enable the satellite antenna to be aligned with respect to a particular satellite. The alignment device is operatively secured to the support arm of the satellite antenna and includes a compass for indicating the directional position of the support arm and also includes a clinometer.