355results about "Vibration damping" patented technology

A pedestal for tracking antenna includes a horizontal isolation assembly dimensioned and configured to isolate the support plate from horizontal vibration and shock of the base ring, a hub assembly including a support mounted on the horizontal isolation assembly rotatably supporting a rotating frame about a first azimuth axis, a vertical isolation assembly including an upright frame and a cross-level axis support slidably interconnected with a linear bearing assembly, the linear bearing assembly having a profiled rail slidably received within a complementary shaped bearing block, wherein the profiled rail can not twist axially relative to the bearing block, a cross-level frame pivotally mounted on the cross-level axis support about a second cross-level axis, and/or an elevation frame assembly supporting the tracking antenna and pivotally mounted on the cross-level frame about a third elevation axis.

An antenna arrangement, a system, and method are provided for implementing a wireless communication module capable of performing adaptive beam forming, with a small antenna sail area. The antenna has a large horizontal to vertical aspect ratio. The antenna module is designed to include very few, or potentially a single radiating element in the vertical direction, and many elements in the horizontal direction, in order to create narrow beam in the azimuth plane, while maintaining a small sail area. The novel form factor advantageously provides for reduced wind loading, and for less conspicuous installations on buildings or towers, for example. The module is anticipated to find widespread applications in LOS and NLOS backhaul applications, and other wireless links between stationary nodes.

An object of the present invention is to provide an antenna control system and a method capable of consistently maintaining an optimum orientation point between a donor antenna and an adjacent base station. The antenna control system for receiving a signal from a base station includes a donor antenna including an antenna module disposed by being fixed to an inner side of a window glass and configured with an array antenna; a phase shifter including a plurality of transmission lines; and a phase controller configured to control the phase shifter to change an orientation direction of the antenna module; and a repeater including a measuring module for measuring a reception signal received by the antenna module; an analyzing module for analyzing a signal quality parameter in each orientation direction of the antenna module based on a measurement result of the measuring module; and a generating module for generating an antenna control signal for controlling the orientation direction of the antenna module based on an analysis result of the analyzing module.

The invention discloses a portable communication mobile base station, which comprises a base and a platform body, wherein the upper end of the base is provided with the platform body, the base and theplatform body are internally provided with installation cavities which are mutually communicated, the base is in the shape of a cylinder, the platform body is in the shape of a conical platform, twosides of the lower end of the base are symmetrically provided with support blocks, the internal parts of the base and the platform body are horizontally provided with an installation plate, the upperend of the installation plate is fixedly provided with a driving motor at the middle position, the top of the platform body above the driving motor is provided with a lifting sleeve, the lifting sleeve is internally provided with a lifting sleeve with the cross section being circular, and the lifting sleeve is internally matched with an antenna lifting rod with the cross section being circular ina sliding manner. The portable communication mobile base station is simple and reasonable in structure, the wind resistance of the device is improved through the design of the conical platform so as to enable the device to be placed more stably, and the switching between transport and fixation of the device is realized, thereby solving drawbacks existing in the device, and being high in practicability.

The invention relates to a communication tower with a windproof function. The communication tower comprises a tower body and three antennas, and further comprises a windproof mechanism and a weeding mechanism; the windproof mechanism comprises a protection assembly and a retracting and releasing assembly, wherein the retracting and releasing assembly comprises a first lifting sleeve tube, a spring, a fixed pulley, a connecting line and three connecting assemblies; the protection assembly comprises a driving unit, a rack, a second lifting sleeve tube, a bracket, a protective cover and at leasttwo fixing rods; and the weeding mechanism comprises a second guide rail, a moving block, a first driving assembly, a supporting rod, a swinging rod, a second driving assembly, a nozzle and a transmission rod. According to the communication tower with the windproof function, the antennas can be retracted by the windproof mechanism and then covered by the protective cover so as to improve the windproof performance of the antennas; and the nozzle can be driven to move along the second guide rail through the weeding mechanism and can be simultaneously driven to swing left and right so as to expand the range of spraying a herbicide of the nozzle and improve the weeding performance of the communication tower.

A low band panel antenna is described. The panel antenna has a double bend reflector, a N×M array of dipole elements symmetrically disposed within an interior portion of the double bend reflector, a five-sided cover. Further, a top portion of the five-sided cover has a dome that is disposed substantially in the middle of the top portion. Moreover, the band panel can be mounted by using a mounting assembly, which further contains two brackets and a concave brace.

There is provided a telescope system including: a main reflector unit; a pedestal unit that bears the main reflector unit to be rotatable around AZ and EL axes; and a motor that drives the main reflector unit. The telescope system corrects deformation of the main reflector unit and the pedestal unit due to the wind force to improve pointing accuracy of the mina mirror unit and the pedestal unit. The telescope system detects motor torques on the AZ axis and the EL axis, predicts deformation of a telescope due to the wind force from torque signals of the motor torques and a pointing error due to the deformation and feeds back the deformation and the pointing error to AZ and EL command values to perform correction of the pointing error.

The invention relates to an antenna device with a protection function applied to a 5G communication iron tower; the antenna device comprises a bottom plate, a top plate, a processor, a support column,an antenna, a lantern ring, two windproof mechanisms and two protection mechanisms, wherein the windproof mechanism comprises a movable assembly, a movable plate, a connecting plate, a fixed assemblyand a wind power assembly, wherein the wind power assembly comprises a bracket, a cabin, a hub, a supporting rod and a plurality of fan blades; the protection assembly comprises a translation assembly, a translation block, a driving rod, a wind shield plate and a hinging assembly; and a plurality of air-permeable assemblies are arranged on the wind shield plate. The antenna device with the protection function and applied to the 5G communication iron tower can be used for weakening the wind power and generating electricity through the windproof mechanisms, so that the energy-saving and environment-friendly effects of equipment are realized while the antenna is protected; moreover, further protection can be realized when the wind force is enhanced through the protection mechanisms, weak wind is formed when passing through the wind shield plate, and the rotation speed of the fan blades is prevented from being too fast due to the fact that the wind speed is too large, so that an engine room is prevented from being damaged, normal operation of the wind power assembly is guaranteed, and therefore the practicability of the equipment is improved.

This invention relates to elementary and complex coupling devices. In particular, such coupling devices may be used for supporting radar, antenna or optical sensor equipment, notably on vessels. The invention is an elementary coupling device comprising a means for stiffening the elementary coupling device against torsion. Means are provided for linking the stiffening means for stiffening to a second object to be coupled. First hinging means for hinging each linking means directly or indirectly on the second object to be coupled at two separate points. Two second hinging means for hinging the means for stiffening on each means for linking at two separate points. Hinging means for hinging the stiffening means are provided directly or indirectly on a first object to be coupled at two separate points. A complex coupling device comprising three of these elementary coupling devices.

A method and arrangement for finding the direction to an emitter source by determining the spatial frequency of a signal received from the source in a sensor panel and comparing the spatial frequency with the instantaneous frequency. The panel includes a first matrix of sensors and a second matrix of sensors interleaved with the first matrix. The spatial frequency is determined by comparing the signals received by the first and second sensor matrices.

A radome for an antenna is provided as a composite of an isotropic outer layer and a structural layer of foamed polymer material. The composite is dimensioned to enclose an open end of the antenna. The radome may be retained upon the antenna by a retaining element and fasteners. The outer layer may be a polymer material with a water resistant characteristic. The structural layer may project inward and/or outward with respect to a plane of the seating surface of the radome.

The back-up structure of a parabolic dish antenna, which supports its reflecting surface, is formed in this invention by preloading its radial and circumferentially placed straight structural members and hence it is termed as preloaded parabolic dish antenna. Such a preloading results in considerable reduction in its weight and also to the effort involved in its assembly. The back-up structure of the preloaded parabolic dish antenna is made of a central hub, an assembly of a suitable number of elastically bent radial structural members connected rigidly to the central hub and to the same number of straight structural members which are connected to the tips of the radial members at the outer rim of the dish and also to straight bracing members placed circumferentially at intermediate locations, which are all tensioned to specified prestress values in the absence of wind loading. The outermost rim members placed at the periphery of the dish form the aperture of the dish. The backup structure of the preloaded parabolic dish antenna is given the parabolic shape by fixing the radial members at a suitable inclination angle and location at the hub and by applying an appropriate force with a normal component at their tips so as to bend the radial members elastically such that their curvature becomes approximately the same as that of the parabolic curve between the hub and the peripheral rim point. The invention incorporates a suitable rigid connection of the elastically bent radial members and other structural members in order to store sufficient initial elastic energy in the back-up structure of the dish for resisting gravitational and static and dynamic wind forces on the parabolic dish antenna for the survival wind condition at the antenna site. This configuration also reduces moment of the wind forces and torques on the mounting tower and gear drive system of the dish antenna. This invention is also applicable to structures of geometries other than that of the parabolic dishes. The method of constructing the preloaded parabolic dish and attaching reflector panels of lightweight is also disclosed.

The preloaded parabolic dish antennas are useful in microwave communication, satellite communication, radar, radio telescope and other similar applications for receiving and/or transmitting radio waves.

The invention relates to the technical field of signal devices, and discloses a signal base station capable of preventing wind and having a self-protection device. The signal base station comprises abase, wherein a mounting frame is fixedly connected above the base, a support frame is fixedly connected to the side surface of the mounting frame, a fixing plate is fixedly connected to the bottom end of the interior of the mounting frame, a rotating column is fixedly connected to the interior of the fixing plate, a rotating disc is fixedly connected to the upper end of the rotating column, the upper surface of the rotating disc is fixedly connected with a limiting column, the side surface of the limiting column is fixedly connected with a buffer spring, one end, far away from the limiting column, of the buffer spring is fixedly connected with a sliding block, and the upper end of the sliding block is fixedly connected with a first transmission gear. Fan blades are blown by the wind, so that a rotating cylinder is driven to start rotating, and the radial force exerted on a signal tower by the wind is converted into the rotating torsion force, so that the effects that the radial forcecan be converted into the torsion force, the shaking of the signal tower is reduced, and the signal transmission is more stable are achieved.

The invention, which belongs to the technical field of mechanical driving and servo control, especially relates to a three-dimensional holographic-imaging servo rotating scanning system. The system comprises a servo motor having a first angle transducer, a second angle transducer, a control assembly, a servo driver, and a rotation frame. The system is a fully closed-loop servo control system. The second angle transducer detects an actual rotation angle of the rotation frame and feeds back a frame feedback signal to the control assembly; an instruction signal and the frame feedback signal are compared in the control assembly to generate a following error; the first angle transducer detects an output rotation angle of the servo motor and feeds back a motor feedback signal to the servo driver; and the servo driver controls the servo motor to make rotation according the following error and the motor feedback signal. The provided system has advantages of simple structure, low cost, easy assembling, high rotation precision, and easy control.

The invention discloses a lunar-based expandable truss-type network cable reflection-surface antenna. The lunar-based expandable truss-type network cable reflection-surface antenna is characterized bycomprising an expandable truss-type support structure, a network cable reflection surface, a damping absorber and a traveling mechanism, wherein the network cable reflection surface is tensioned at the top of the expandable truss-type support structure, the damping absorber is fixed at a node of the bottom of the expandable truss-type support structure, and the travelling mechanism is fixed at the bottom of the damping absorber. The lunar-based expandable truss-type network cable reflection-surface antenna can be applied to actual engineering of high-accuracy and large-aperture reflection-surface antenna on a lunar surface and is suitable for a working condition of the lunar surface, the working performance requirement is met, and the lunar-based expandable truss-type network cable reflection-surface antenna has favorable storage ratio, integral stability and dynamic performance; and the lunar-based expandable truss-type network cable reflection-surface antenna is light in structure,simple in form, flexible in design and wide in application and has favorable military and civilian market prospect.

The invention discloses a communication tower with retractable antennas, which comprises a base, a tower body and antennas. The upper surface of the base is fixed with the tower body; the top of the tower body is fixed with a top rod; the top of the top rod is fixed with a fixing disk; the edge of the fixing disk is hinged with the antennas; the middle of the top rod is sleeved with a sleeve; thesleeve is rotationally connected with the top rod; the middle of the sleeve is sleeved with a slider; the slider is in threaded connection with the sleeve; the middle of each antenna is hinged with aconnecting rod; the lower end of the connecting rod is hinged with the slider; the side wall of the tower body is fixed with a motor bracket; and the upper surface of the motor bracket is fixed with amotor. When windy weather is encountered, the antenna is driven downwardly by the motor, the antenna is retracted, the wind resistance is reduced and the antenna can be prevented from being blown deformed by the wind; after the heavy wind, the motor is controlled to rotate reversely, the antenna rotates upwardly, and the antenna is opened again; and through arranging a fixing pile and a fixing plate at the bottom of the base and by using left positioning rods, right positioning rods and fixing bars, the stability of the base is further enhanced.

The invention relates to an internet of things-based intelligent communication iron tower having a protection function. The intelligent communication iron tower comprises a bottom board, a tower body,a platform a lightning rod, a processor, four tower legs and a plurality of communication mechanisms. Each communication mechanism comprises a first motor, a first driving shaft, a rotary plate, an antenna, a top plate, a fixing mechanism and two blocking mechanisms; each blocking mechanism comprises a direction regulating assembly, a baffle plate and a fastening assembly; the fixing mechanism comprises a plurality of fixing shafts and a plurality of fixing components; each fixing component comprises a recess, a telescopic unit, a blocking plate and two fixing units. The internet of things-based intelligent communication iron tower having a protection function has the advantages that: the direction regulating assemblies in the blocking mechanisms can realize angle regulation of the baffleplates and the top plates to shield the antennas from wind and rain; the baffle plates are fixed above the rotary plates via the fastening assemblies and the angle of the rotary plates is fixed via the fixing mechanisms, so that the rotary plates are prevented from shaking in fierce wind weather, the structure is firmer and the practicability of the apparatus is improved.

The invention concerns an antenna module for a vehicle. The lower assembly comprises a locking mechanism and the upper assembly comprises a counter locking mechanism, wherein the locking mechanism is able to be locked to or unlocked from the counter locking mechanism, and wherein the locking mechanism is able to be actuated so as to avoid, when actuating same, exerting a force that acts in a joining direction.