Patent Grant
12199329
This application is a U.S. national stage entry under 35 U.S.C. § 371 of International Application No. PCT/US2019/061598 filed Nov. 15, 2019, entitled “REMOVEABLE SATELLITE ANTENNA POINTING TOOL”. The foregoing application is hereby incorporated by reference in its entirety (except for any subject matter disclaimers or disavowals, and except to the extent of any conflict with the disclosure of the present application, in which case the disclosure of the present application shall control).
This disclosure relates generally to satellite communications. More particularly, this disclosure describes a removeable satellite antenna pointing tool.
A satellite antenna (e.g., a directional antenna) can be aligned upon deployment to the location the satellite antenna is to be used. An installer can attach a support structure of the satellite antenna to an object (e.g., ground, a building or other structure, etc.) and carry out an alignment process to point the beam of the satellite antenna towards a target antenna (e.g., on a geostationary satellite). The alignment process may include loosening bolts on a mounting bracket on the back of the antenna support structure and physically moving the satellite antenna until the satellite antenna sufficiently pointed at the target using a signal metric (e.g., signal strength) of a signal communicated between the satellite antenna and the target. Once sufficiently pointed, the installer can tighten the bolts to immobilize the mounting bracket.
The satellite antenna can be implemented as a satellite dish of a satellite ground station. In such a situation, the satellite antenna includes a parabolic reflector and a feed antenna. Moreover, the support structure for the satellite antenna can include a pole on which the satellite antenna is mounted. Further, the support structure can include a moveable joint or multiple pivot points to allow the satellite antenna to change an azimuth and elevation to adjust the pointing of the satellite antenna.
One example relates to a removeable satellite antenna pointing tool that can include a mounting gear releasably engageable with a pole that supports a satellite antenna. The removeable satellite antenna pointing tool can also include an azimuth gear subsystem housed in a frame and engaged with the mounting gear and a motor that drives the azimuth gear subsystem, wherein actuation of the motor causes the frame to rotate about the pole. The removeable satellite antenna pointing tool can further include a linear drive that controls an elevation of a control shaft engageable with a fixture attached to the satellite antenna. Actuation of the motor can change an azimuth of the satellite antenna and actuation of the linear drive can change an elevation of the satellite antenna.
Another example relates to a removeable satellite antenna pointing tool that includes a mounting gear releasably engageable with a pole that supports a satellite antenna. The mounting gear can include a friction region having a first radius of curvature, the friction region being shaped to partially circumscribe the pole and a toothed region having a second radius of curvature, the second radius of curvature being greater than the first radius of curvature. The removeable satellite antenna pointing tool can also include an azimuth gear subsystem comprising a gear interlocked with the toothed region of the mounting gear and a motor rigidly attached to a frame of the removeable satellite antenna pointing tool, the motor driving the azimuth gear subsystem to rotate the frame about the pole with one degree of freedom. The removeable satellite antenna pointing tool can further include a linear drive that controls an elevation of a control shaft that is attachable to a fixture of the satellite antenna. The linear drive can be affixed to the frame of the removeable satellite antenna pointing tool. Actuation of the linear drive can change an elevation of the satellite antenna and the actuation of the first motor can control rotation of the control shaft to adjust an azimuth of the satellite antenna.
This disclosure describes a removeable satellite antenna pointing tool that is employable to align a pointing direction on a satellite antenna (e.g., a satellite dish) such that the satellite antenna points toward a target satellite. The removeable satellite antenna pointing tool can be temporarily installed to align the satellite antenna, removed, and reused to align another satellite antenna.
The removeable satellite antenna pointing tool can include a frame for housing components. The removeable satellite antenna pointing tool can include a mounting gear with a friction region shaped to receive a portion of a support structure (e.g., a pole) of the satellite antenna. The mounting gear also includes a toothed region interlocked with a first spur gear. The first spur gear can be mechanically coupled to a second spur gear with a shaft. A worm gear can be interlocked with the first spur gear. The removeable satellite antenna pointing tool can include an azimuth control motor attached to the frame that drives the worm gear. A linear drive attached to the frame can control a vertical position of a control shaft that is attached to the frame of the satellite antenna. More particularly, actuation of the linear drive can change a vertical position of the control shaft to control an elevation of the satellite antenna. Similarly, actuation of the azimuth control motor controls rotation of the control shaft to adjust an azimuth angle of the satellite antenna. Accordingly, the azimuth and elevation of the satellite antenna can be adjusted.
In some examples, the linear drive and the azimuth control motor can be controlled by a controller that communicates with a mobile device (e.g., a smart phone). In such a situation, the mobile device is employable to calculate a pointing direction for the satellite antenna based on a geographic location of the mobile device relative to the target satellite. The mobile device can employ the calculated pointing direction to command the controller to set the azimuth and elevation of the satellite antenna. In response, the controller can control the azimuth control motor and the linear drive to align the satellite antenna.
The satellite antenna 8 can be designed to communicate with a target satellite 16 when the satellite antenna 8 is pointed toward the target satellite 16. In some examples, the communication between the target satellite 16 and the satellite antenna 8 can be bi-directional, such as network communication (e.g., Internet access). In other examples, the communication can be one-way communication from the target satellite 16 to the satellite antenna 8, such as in situations where the satellite antenna receives a broadcast signal.
The satellite antenna 8 can be affixed to a lockable joint 17 of the satellite antenna support structure. In an unlocked condition, the lockable joint 17 can provide two axes of rotation to change the pointing direction 10 of the satellite antenna 8 such that the azimuth and elevation of the satellite antenna 8 can be adjusted. In some examples, the lockable joint 17 can be representative of a hinge and a sleeve affixed to a pole 18 of the satellite antenna support structure. The lockable joint 17 and the pole 18 can be components of a satellite antenna support structure for the satellite antenna 8. In other examples, the lockable joint 17 can be a ball lockable joint that allows movement in multiple directions. In a locked condition, the lockable joint 17 can hold the satellite antenna 8 in a static position. The lockable joint 17 can be unlocked, for example, by loosening fasteners (e.g., bolts), and the lockable joint 17 can be locked tightening of such fasteners. In some examples, the pole 18 can be affixed to a building. In other examples, the pole 18 can be planted in the ground.
In situations where the satellite antenna 8 is aligned such that the satellite antenna 8 points towards the target satellite 16, a communication signal (e.g., bidirectional communication signal or one-way downlink signal) can be provided to a terminal 20. The terminal 20 can be implemented as a computing platform. In some examples, the terminal 20 can be implemented as a desktop computer, a laptop computer a tablet computer, etc. In other examples, the terminal 20 can be implemented as a set-top box for processing and outputting broadcast signals. The terminal 20 can include a modem 22 that is logically positioned between the satellite antenna 8 and other components of the terminal 20. The modem 22 can decode data transmitted from the target satellite 16 and provide such data to the terminal 20 or another system. Additionally, in examples where the satellite antenna 8 allows bidirectional communication with the target satellite 16, the modem 22 can encode data transmitted from the terminal 20 onto a carrier signal that can be transmitted to the target satellite 16. Further, in some examples, the modem 22 can include a WiFi transceiver that allows communication with an external system, as discussed herein.
Precise alignment of the satellite antenna 8 is needed to elevate a signal-to-noise ratio (SNR) of signals transmitted between the target satellite and the satellite antenna 8. Stated differently, the precision of the pointing direction 10 towards the target satellite 16 impacts the signal strength of the signal to the modem 22. Increase in the signal strength elevates bandwidth during periods of high signal strength and reduces downtime during periods of high interference (and a relatively low signal strength). However, during installation of the satellite antenna 8, manual alignment of the satellite antenna 8 can be relatively imprecise, such that the SNR of signals transmitted between the target satellite 16 and the satellite antenna 8 may be unacceptably low, particularly during time periods with levels of relatively high interference (e.g., during a thunderstorm).
Accordingly, to improve the precision of the pointing direction 10 of the satellite antenna 8, an installer can temporarily affix the removeable satellite antenna pointing tool 2 the pole 18 of the antenna support structure. Additionally, the installer can unlock the lockable joint 17 (e.g., loosen the fasteners) to allow the satellite antenna 8 to change directions. The removeable satellite antenna pointing tool 2 can be employed to align the pointing direction 10 of the satellite antenna 8 toward the target satellite 16. More particularly, the removeable satellite antenna pointing tool 2 can cause the satellite antenna 8 to pivot about the two axes allowed by the lockable joint 17 to adjust the pointing direction 10 of the satellite antenna 8.
The removeable satellite antenna pointing tool 2 can include frame 24 that houses components. The removeable satellite antenna pointing tool 2 can include a mounting gear 26 that is partially enclosed by the frame 24. The mounting gear 26 can include a friction region 28 with a first radius of curvature that is shaped to partially circumscribe the pole 18. An attachment mechanism (not shown) can hold the mounting gear tightly against the pole 18. In some examples, the attachment mechanism can be implemented as a mounting bracket that can be affixed to the mounting gear 26 to fully circumscribe the pole 18 and to provide a compressive force (e.g., a press-fit) on the pole 18 of the satellite antenna support structure. In other examples, the attachment mechanism can be implemented as a strap (e.g., a fabric strap or a metallic strap) to apply compressive force to affix the mounting gear 26 to the pole 18. In either situation, a force of friction between the pole 18 and the friction region 28 of the mounting gear 26 hold the mounting gear 26 in a static position. The mounting gear 26 can also include a toothed region 30 with gear teeth. The toothed region 30 can have a second radius of curvature that is greater than the first radius of curvature. An azimuth gear subsystem 31 that engages with the mounting gear 26 can allow adjustment of the azimuth of the satellite antenna 8. Specifically, the toothed region 30 of the mounting gear 26 can be interlocked with teeth of a first spur gear 32 of the azimuth gear subsystem 31.
The first spur gear 32 can be affixed to a shaft 34 of the azimuth gear subsystem 31 that extends through a center hole of the first spur gear 32. The shaft 34 can also extend through a center hole of a second spur gear 36 of the azimuth gear subsystem 31. The second spur gear 36 can include gear teeth interlocked with a worm gear 38 of the azimuth gear subsystem 31. The worm gear 38 can be driven by an azimuth control motor 40 (labeled “ACM”). The azimuth control motor 40 can be controlled by a controller 42. The controller 42 can be implemented as a microcontroller or a single-board computer. Moreover, the controller 42 can command the azimuth control motor 40 to actuate or deactivate. Actuation of the azimuth control motor 40 causes the worm gear 38 to spin, which in turn causes the second spur gear 36 and the first spur gear 32 (coupled by the shaft 34) to spin. The first spur gear 32 and the mounting gear 26 can operate as a curved rack (e.g., a curved rack with an angular distance of about 180 degrees or less) and pinion gear set. Additionally, the mounting gear 26 is held in a stationary position because the mounting gear 26 is affixed to the pole 18. Thus, spinning of the first spur gear 32 causes the remaining components of the removeable satellite antenna pointing tool 2 that are housed in in the frame 24 to rotate about the pole 18 in a direction indicated by an arrow 46.
In other examples, there could be more or less gears in the azimuth gear subsystem 31. For instance, in some examples, the azimuth control motor 40 can be coupled directly to a gear that is interlocked with the toothed region of the mounting gear. Additionally, in examples where there is more than one mounting gear, there could be more spur gears.
Additionally, the controller 42 can control a linear drive 50 (labeled “LD”) of the removeable satellite antenna pointing tool 2 that is affixed to the frame 24. In some examples, the linear drive 50 can be implemented as a stepper motor to drive a screw gear 52 or other mechanism attached to a control shaft 54. Actuation of the linear drive 50 changes an elevation of the control shaft 54 in a direction indicated by an arrow 56. In other examples, the linear drive 50 can be implemented as a linear actuator. In yet other examples, the linear drive 50 can be implemented as a hydraulic actuator. The control shaft 54 can be temporarily affixed to the boom 15 with a bracket 58. Thus, movement of the control shaft 54 causes corresponding movement to the satellite antenna 8, thereby changing the pointing direction 10 of the satellite antenna 8.
As noted, actuation of the azimuth control motor 40 causes the frame 24 of the removeable satellite antenna pointing tool 2 to rotate about the pole 18 in the direction indicated by the arrow 46. Because the control shaft 54 is coupled to the boom 15, rotation of the frame 24 of the removeable satellite antenna pointing tool 2 causes the azimuth of the satellite antenna 8 to change. Additionally, as noted, actuation of the linear drive 50 can cause the control shaft 54 to change elevation in the direction indicated by the arrow 56. Changing the elevation of the control shaft 54 changes the direction of the satellite antenna 8. Thus, actuation of the azimuth control motor 40 by the controller 42 changes an azimuth of the satellite antenna 8, and actuation of the linear drive 50 by the controller 42 changes an elevation of the satellite antenna 8. In this manner, the pointing direction 10 of the satellite antenna 8 can be adjusted in response to commands from the controller 42.
During an installation procedure, the installer can employ a mobile device 60. The mobile device 60 can be implemented as a computing platform, such as a smart phone, a tablet computer, a laptop computer, etc. The mobile device 60 can include a global navigation satellite system (GNSS) device, such as a global positioning system (GPS) or GLONASS device that can employ location satellite signals to determine a location and orientation of the mobile device 60. Additionally, the mobile device 60 can include a magnetometer and a gyroscope. The mobile device 60 can communicate with the controller 42 via a wireless personal area network connection, such as a Bluetooth connection. Similarly, the mobile device 60 can communicate with the modem 22 via the WiFi connection. The mobile device 60 can include a nontransitory memory (e.g., random access memory) for storing data and machine executable instructions. The mobile device 60 can also include a processing unit (e.g., one or more processor cores) for accessing the non-transitory memory and executing the machine executable instructions. The machine executable instructions can include an alignment application 62.
The alignment application 62 and the removeable satellite antenna pointing tool 2 can be employed by the installer to guide the alignment of the satellite antenna 8 in an alignment process. More specifically, the alignment application 62 can query the GNSS device, the magnetometer and the gyroscope for a current location and orientation of the mobile device 60. Based on the current location and orientation, the alignment application 62 can determine and output an initial azimuth direction for the satellite antenna 8. The installer can manually set the initial azimuth direction for the satellite antenna 8 by rotating the satellite antenna 8 to a position that is within 90 degrees of a proper azimuth for the satellite antenna 8.
Additionally, continuing with the alignment process upon confirming that the initial azimuth for the satellite antenna 8 is set, the alignment application 62 can determine an azimuth and elevation for the satellite antenna 8 based on the determined location of the mobile device 60 and a known relative position of the target satellite 16. The alignment application 62 can command the controller 42 to make coarse adjustments to the azimuth and elevation to the pointing direction 10 of the satellite antenna 8 based on the determined azimuth and elevation for the satellite antenna 8. In some examples, the alignment application 62 can communicate with the controller 42 via the wireless network connection.
More specifically, the alignment application 62 can command the controller 42 to determine a current pointing direction 10 of the satellite antenna 8 and to change the pointing direction 10. As an example, the alignment application 62 can command the controller 42 to determine a current position of the frame 24 and the control shaft 54 relative to the position of the satellite antenna 8. More particularly, the controller 42 can actuate the azimuth control motor 40 and the linear drive 50 until extreme positions for the frame 24 and the control shaft 54 are reached. Additionally, the alignment application 62 can command the controller 42 to actuate the azimuth control motor 40 to set the azimuth to the determined azimuth for the satellite antenna 8 and to actuate the linear drive 50 to set the elevation for the satellite antenna 8 in a coarse direction setting operation thereby setting the pointing direction 10 for the satellite antenna 8. In response, the controller 42 can employ an internal magnetometer to determine a present orientation of the satellite antenna 8 and send command signals to the azimuth control motor 40 and the linear drive 50 to set the elevation for the satellite antenna 8 in a coarse direction setting operation thereby setting the pointing direction 10 for the satellite antenna 8 within 3 degrees (in both azimuth and elevation) of a peak signal direction (e.g., a direction with a greatest SNR).
Upon completing the coarse direction setting operation, the satellite antenna 8 can detect a signal from the target satellite 16. The alignment application 62 can communicate with the modem 22 via the Wi-Fi connection between the mobile device 60 and the modem 22. In response to completing the coarse direction setting operation, the alignment application 62 can execute a fine direction setting operation of the alignment process.
To execute the fine direction setting operation, the alignment application 62 queries the modem 22 for data indicating a strength of the signal from the target satellite 16. The alignment application 62 monitors the signal strength and commands the controller 42 to make incremental changes to the pointing direction 10 of the satellite antenna 8 through execution of a scanning algorithm (e.g., a spiral drive or step track) to find a pointing direction 10 with a peak (or near peak) SNR. After setting the pointing direction 10 for the satellite antenna 8 to the peak (or near peak) SNR, the alignment application 62 commands the controller 42 to deactivate the azimuth control motor 40 and the linear drive 50 to hold the current pointing direction 10 for the satellite antenna 8. Moreover, the installer can lock the lockable joint 17 by tightening the fasteners of the lockable joint 17 to hold the satellite antenna 8 in a static position. After locking the lockable joint 17, the removeable satellite antenna pointing tool 2 can be removed from the pole 18 so that the removeable satellite antenna pointing tool 2 can be employed again on a different satellite ground station.
Further, in some examples, during the alignment process, the controller 42 can include an internal accelerometer that can detect an unstable satellite antenna 8 such as due to improper locking of the lockable joint 17 (e.g. not tightening of the fasteners) or an improper mounting of the satellite antenna 8. More particularly, the accelerometer can be oriented to measure vertical acceleration of the satellite antenna, and the controller 42 can be configured to provide a notification to the mobile device 60 that the vertical acceleration of the satellite antenna exceeds a threshold. In such a situation, the controller 42 can provide a warning (or other notification) to the alignment application 62 notifying the installer that the support structure and/or the satellite antenna 8 needs to be inspected and/or that the alignment procedure needs to be reexecuted.
By employing the removeable satellite antenna pointing tool 2, alignment of the satellite antenna 8 is simplified. Additionally, as indicated, the removeable satellite antenna pointing tool 2 is portable and reusable. Therefore, the overall costs for precise alignment of a plurality of ground stations is curtailed.
The satellite ground station 102 can include a satellite antenna 106 formed of a parabolic reflector 108 and an antenna feed 110. A boom 111 aligns the antenna feed 110 at or near a focal point of the parabolic reflector 108. The satellite antenna 106 can be referred to as a satellite dish. Moreover, the satellite ground station 102 can include a support structure for the satellite antenna. The support structure can include a pole 112, a hinge 114 and a sleeve 116 to facilitate pointing of the satellite antenna 106. The hinge 114 and the sleeve 116 are each instances of a lockable joint (e.g., the lockable joint 17 of
The satellite ground station 102 can, for example, be attached to a structure such as the roof or side wall of a building. A removeable satellite antenna pointing tool 120 can be temporarily affixed to the satellite ground station 102 to accurately align an antenna of the satellite ground station 102 with the target satellite 104 at a time of installation of the satellite ground station 102 and/or to correct misalignment caused from improper installation/alignment, weather (e.g., wind gusts) or other external stimuli.
The satellite ground station 102 can communicate with a terminal 122, such as a computing platform. The terminal 122 can include a non-transitory memory for storage of data and machine readable instructions, a processing unit (e.g., one or more processor cores) for accessing the non-transitory memory and executing the machine executable instructions, and components that facilitate communication over the two-way satellite communication system 100. For purposes of simplification of explanation, only one terminal 122 is illustrated in
Once aligned, the satellite antenna 106 can be employed by the terminal 122 to establish an uplink signal 124 to the target satellite 104 and a downlink signal 126 from the target satellite 104. Stated differently, the terminal 122 can be employed as an endpoint of communications that pass through the satellite antenna 106. As one example, the terminal 122 can include a modem 128 to transmit to and receive signals communicated with the target satellite 104. To enable such alignment, the removeable satellite antenna pointing tool 120 can include circuitry (e.g., a controller or a wireless transceiver) that allows bidirectional communication with a mobile device 150 through a wireless personal area network connection, such as a Bluetooth connection. The mobile device 150 can be a computing platform, such as a smart phone or tablet computer that can execute an alignment application 152. Similarly, the modem 128 can include circuitry (e.g., another wireless transceiver) for communicating with the mobile device 150 through a wireless network connection, such as a Wi-Fi connection. The mobile device 150 can execute an alignment application 152 that can process signaling for aligning the satellite antenna 106.
In the example illustrated, the target satellite 104 provides bidirectional communication between the terminal 122 and a gateway terminal 130. The gateway terminal 130 is sometimes referred to as a hub or ground station. The gateway terminal 130 includes a satellite antenna to transmit a forward uplink signal 140 to the target satellite 104 and to receive a return downlink signal 142 from the target satellite 104. The gateway terminal 130 can also schedule traffic to the terminal 122. Additionally or alternatively, the scheduling can be performed in other elements of the two-way satellite communication system 100 (e.g., a core node, network operations center (NOC) and/or or other components). The uplink signal 140 and the downlink signal 142 communicated between the gateway terminal 130 and the target satellite 104 can employ the same, overlapping or different frequencies as the uplink signal 124 and/or the downlink signal 126 communicated between the target satellite 104 and the satellite antenna 106. The gateway terminal 130 may be located remotely from the satellite ground station 102 to enable frequency reuse. By separating the gateway terminal 130 and the satellite ground station 102, spot beams with common frequency bands can be geographically separated to avoid interference.
The gateway terminal 130 can be communicatively coupled to a network 132. The network 132 can be implemented as a public network (e.g., the Internet or the public switched telephone network (PSTN)), a private network (e.g., a cellular network or an intranet) or a combination thereof (e.g., a virtual private network (VPN). The network 132 can include both wired and wireless connections as well as optical links. The network 132 can connect multiple instances of the gateway terminal 130 that may be in communication with the target satellite 104 and/or with other satellites.
The gateway terminal 130 can operate as an interface between the network 132 and the target satellite 104. The gateway terminal 130 can be configured/programmed to receive data and information directed to the terminal 122. In some examples, the gateway terminal 130 can include a computing platform (e.g., memory and a processor) with instructions to format such data and information and transmit the uplink signal 140 to the target satellite 104 for delivery to the terminal 122. Similarly, the gateway terminal 130 can be configured to receive the downlink signal 142 from the target satellite 104 (e.g. containing data and information originating from the terminal 122) that is directed to a destination accessible via the network 132. The gateway terminal 130 can also format data encoded in the received return downlink signal 142 for transmission on the network 132.
The target satellite 104 can be configured to receive the uplink signal 140 from the gateway terminal 130 and transmit the corresponding downlink signal 126 to the terminal 122. Similarly, the target satellite 104 receives an uplink signal 124 from the terminal 122 and transmits a corresponding downlink signal 142 to the gateway terminal 130. The target satellite 104 can operate in a multiple spot beam mode, transmitting and receiving a plurality of narrow beams directed to different geographic regions. Accordingly, the target satellite 104 can segregate terminals in different geographic regions into various narrow beams. Alternatively, the target satellite 104 may operate in wide area coverage beam mode, transmitting a wide area coverage beam (or multiple wide area coverage beams).
In some examples, the target satellite 104 can operate as a “bent pipe” satellite that performs frequency and polarization conversion of the received signals before retransmission of the signals to a destination. As another example, the target satellite 104 may be configured as a regenerative satellite that demodulates and remodulates the received signals before retransmission.
As noted, during installation, the removeable satellite antenna pointing tool 120 can be mounted to the pole 112 of the support structure for the satellite antenna 106. The removeable satellite antenna pointing tool 120 can be employed to align the satellite antenna 106 with the target satellite 104 and subsequently removed.
The removeable satellite antenna pointing tool 120 can include a control shaft 200 that that is rigidly attached to a bracket 202 coupled to the boom 111 that connects the antenna feed 110 to the parabolic reflector 108. Moreover, during installation, fasteners (e.g., bolts) for the hinge 114 and the sleeve 116 are loosened to unlock the hinge 114 and the sleeve 116, allowing adjustment to the azimuth and elevation of the satellite antenna 106. Thus, movement of the control shaft 200 causes responsive movement in the satellite antenna 106.
A vertical position (e.g., elevation) of the control shaft 200 can be controlled by a linear drive 210. As one example, the linear drive 210 can be implemented as a stepper motor that drives a screw gear. In such a situation, the control shaft 200 can be engaged with the screw gear such that actuation of the linear drive causes the control shaft 200 to raise or lower. In another example, the linear drive 210 can be implemented as a linear actuator. In yet another example, the linear drive 210 can be implemented as a hydraulic actuator.
The linear drive 210 can be affixed to a frame 214 of the removeable satellite antenna pointing tool 120. The frame 214 can support an azimuth control motor 220.
The removeable satellite antenna pointing tool 120 can include a first mounting gear 222 and a second mounting gear 224 that are parallel and spaced apparat from each other. Moreover, although the example illustrated includes two mounting gears, in some examples, as described herein, there is a single mounting gear, and in other examples, there can be more than two mounting gears. The first mounting gear 222 and the second mounting gear 224 can have the same shape. The first mounting gear 222 and the second mounting gear 224 each include a friction region 230 and a toothed region 232. The friction region 230 of the first mounting gear 222 and the second mounting gear 224 are shaped as arcs (e.g., semicircles) that partially circumscribe the pole 112 (omitted from
In some examples, the first mounting gear 222 and the second mounting gear 224 are removeable (by rotation of the first mounting gear 222 and the second mounting gear 224) to allow different sizes of the first mounting gear 222 and the second mounting gear 224 to enable mounting to antenna structures with different sizes of poles 112.
The removeable satellite antenna pointing tool 120 can include an azimuth gear subsystem that can allow change to the azimuth of the satellite antenna 106. The azimuth gear subsystem includes one or more gears to transfer energy from the azimuth control motor 220 to the first mounting gear 222 and the second mounting gear 224.
The toothed region of the first mounting gear 222 can interlock with a first spur gear 240 of the azimuth gear subsystem and the second mounting gear 224 can interlock a second spur gear 242 of the azimuth gear subsystem. Additionally, a third spur gear 244 of the azimuth gear subsystem can interlock with a worm gear 250 of the azimuth gear subsystem that is driven by the azimuth control motor 220. A shaft 249 of the azimuth gear subsystem extends through a center of the first spur gear 240, the second spur gear 242 and the third spur gear 244. Accordingly, activation of the azimuth control motor 220 causes the worm gear 250 to rotate, thereby causing the first spur gear 240, the second spur gear 242 and the third spur gear 244 to rotate as well. Rotation of the first spur gear 240 and the second spur gear 242 causes the first mounting gear 222 and the second mounting gear 224 to rotate in response.
The first mounting gear 222 can include a first dovetail rail 254 and the second mounting gear 224 can include a second dovetail rail 256. The first dovetail rail 254 can protrude from a lower surface of the first mounting gear 222 and the second dovetail rail 256 can protrude from an upper surface of the second mounting gear 224. Accordingly, the first dovetail rail 254 and the second dovetail rail 256 are arranged on opposing surfaces of the respective first mounting gear 222 and the second mounting gear 224. In examples where there is one mounting gear, the first dovetail rail 254 and the second dovetail rail 256 can protrude from opposing sides of the mounting gear.
Referring back to
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Upon determining that the satellite antenna 106 is pointed in a direction with a peak (or near peak) signal strength of the downlink signal 126, the hinge 114 and the sleeve 116 can be locked by tightening the associated fasteners to keep the satellite antenna 106 pointing in the same direction. Additionally, upon locking the hinge 114 and the sleeve 116, the detachable mounting bracket 234 can be removed from the removeable satellite antenna pointing tool 120, and the removeable satellite antenna pointing tool 120 can be dismounted from the pole 112. Accordingly, the installer can reuse the removeable satellite antenna pointing tool 120 to align a different satellite antenna. By employing the removeable satellite antenna pointing tool 120 to align the satellite antenna 106, inaccuracies due to human imprecision can be curtailed.
The removeable satellite antenna pointing tool 300 can include a control shaft 306 that can be rigidly attached to a bracket coupled to a boom that connects an antenna feed to a reflector, such as the boom 111 of
The second spur gear 320 of the azimuth gear subsystem can be interlocked with a worm gear 330 of the azimuth gear subsystem. The worm gear 330 can be driven by an azimuth control motor 332, which can be implemented as a stepper motor. In this manner, the azimuth gear subsystem can transfer energy from the azimuth control motor 332 to the mounting gear 308. Further, the mounting gear 308 can include a first dovetail rail 336 and a second dovetail rail 338. The first dovetail rail 336 can protrude from an upper surface of the mounting gear 308 and the second dovetail rail 338 can protrude from a lower surface of the mounting gear 308. Accordingly, the first dovetail rail 336 and the second dovetail rail 338 are arranged on opposing surfaces of the mounting gear 308.
A first set 340 of a plurality of stabilizing spindles 342 can engage the first dovetail rail 336 and a second set 344 of the plurality of stabilizing spindles 342 and the second dovetail rail 338. Each of the plurality of stabilizing spindles 342 can be rigidly attached to the frame 304. The first set 340 of the stabilizing spindles 342 and the second set 344 of the stabilizing spindles 342 prevent movement of the mounting gear 308 in a vertical direction. Moreover, the first set 340 of the stabilizing spindles 342 and the second set 344 of the stabilizing spindles 342 limits movement of the frame 304 to one degree of freedom, such as rotation along the path defined by the first dovetail rail 336 and the second dovetail rail 338, such as an arc of about 180 degrees.
As noted, the mounting gear 308 incudes a friction region 310 shaped to mount to the pole for a satellite antenna. In some examples, the mounting gear 308 is removeable (by rotation of the mounting gear 308) to allow different mounting gears of different sizes to enable mounting on poles of different sizes. The mounting gear 308 can be affixed to the pole by an attachment mechanism. The attachment mechanism can be implemented, for example, as a removeable mounting bracket that can be attached to the mounting gear 308. In other examples, the attachment mechanism can be implemented as a metallic or fabric strap that can press the mounting gear 308 against the pole.
The removeable satellite antenna pointing tool 300 also include a linear drive 350 for controlling an elevation of the control shaft 306. The linear drive 350 can be implemented, for example, as a stepper motor that controls a screw gear to drive the control shaft 306. In other examples, the linear drive can be implemented as a linear actuator. In yet other examples, the linear drive 350 can be implemented as a hydraulic actuator. A controller (not shown), such as the controller 42 of
Operation of the removeable satellite antenna pointing tool 300 is similar to the operation of the removeable satellite antenna pointing tool 2 of
Furthermore, in some examples, the removeable satellite antenna pointing tool 300 can include a manual access port 351. The first manual access port 351 is shaped to receive drill head (e.g., a keystone drill head) to allow an electric drill to rotate the shaft 316 in the event of a failure of the azimuth control motor 332 and change an azimuth of the satellite antenna. Further, in such an example, a second manual access port 352 can be included to receive the drill head to allow the electric drill to raise and lower the control shaft 306 to change an elevation of the satellite antenna.
In view of the foregoing structural and functional features described above, an example method will be better appreciated with reference to
At 405, the installer can execute an alignment application (e.g., the alignment application 62 of
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What have been described above are examples. It is, of course, not possible to describe every conceivable combination of components or methodologies, but one of ordinary skill in the art will recognize that many further combinations and permutations are possible. Accordingly, the disclosure is intended to embrace all such alterations, modifications, and variations that fall within the scope of this application, including the appended claims. As used herein, the term “includes” means includes but not limited to, the term “including” means including but not limited to. The term “based on” means based at least in part on. Additionally, where the disclosure or claims recite “a,” “an,” “a first,” or “another” element, or the equivalent thereof, it should be interpreted to include one or more than one such element, neither requiring nor excluding two or more such elements.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/US2019/061598 | 11/15/2019 | WO |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2021/096523 | 5/20/2021 | WO | A |
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| Entry |
|---|
| International Search Report and Written Opinion dated Sep. 10, 2020 in Application No. PCT/US2019/061598. |
| Number | Date | Country | |
|---|---|---|---|
| 20220393334 A1 | Dec 2022 | US |
