CN107146949B - Satellite antenna for improving receiving and transmitting efficiency of feedforward type double-reflection parabolic antenna - Google Patents
Satellite antenna for improving receiving and transmitting efficiency of feedforward type double-reflection parabolic antenna Download PDFInfo
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- CN107146949B CN107146949B CN201710487488.9A CN201710487488A CN107146949B CN 107146949 B CN107146949 B CN 107146949B CN 201710487488 A CN201710487488 A CN 201710487488A CN 107146949 B CN107146949 B CN 107146949B
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- 230000007246 mechanism Effects 0.000 claims abstract description 48
- 238000004891 communication Methods 0.000 claims abstract description 12
- 230000010287 polarization Effects 0.000 claims description 30
- 238000009434 installation Methods 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/125—Means for positioning
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/12—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces wherein the surfaces are concave
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/18—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces having two or more spaced reflecting surfaces
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
- H01Q3/08—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying two co-ordinates of the orientation
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Abstract
The invention discloses a satellite antenna for improving receiving and transmitting efficiency of a feedforward double-reflection parabolic antenna, which comprises an antenna communication assembly and a supporting assembly; the antenna communication assembly comprises a first reflecting surface, a second reflecting surface, a feed source radio frequency mechanism and an equipment box which are integrated into a whole; the feed source radio frequency mechanism is positioned between the first reflecting surface and the second reflecting surface; the equipment box is positioned at the bottom of the first reflecting surface or on the supporting component and is electrically connected with the feed source radio frequency mechanism; the feed source radio frequency mechanism comprises a power amplifier and a low noise amplifier which amplify signals. The satellite antenna for improving the receiving and transmitting efficiency of the feedforward double-reflection parabolic antenna reduces transmitting loss and improves the G/T value of a received signal.
Description
Technical Field
The invention belongs to the technical field of satellite communication, and particularly relates to a satellite antenna capable of improving receiving and transmitting efficiency of a feedforward double-reflection parabolic antenna.
Background
The VSAT satellite communications antenna is referred to as a micro station, mini data station, or very small aperture terminal, and the VSAT remote mini-station may have "full service," i.e., bi-directional voice, data, and radio frequency single-receive service. The VSAT has: multiple service types can be supported, including data, voice, images, etc.; can work in C band or Ku band; the terminal antenna has the characteristics of small size, compact design structure, low power consumption, low cost, convenient installation, low environmental requirement and the like.
Between satellites and earth stations, information is carried using electromagnetic waves. Higher frequencies are typically used for efficient radiation of electromagnetic waves by the antenna, while at the same time facilitating higher information rates. The frequency range commonly used for satellite communication systems is 150MHz to 300GHz. Most commercial satellite fixed services use the C-band 6/4GHz (uplink/downlink frequency), the Ku-band 14/12GHz is being heavily utilized, while the Ka-band 30/20GHz has been increasingly used.
The antennas are divided into a feed type and a bias type according to a feed type, and are distinguished according to a position where a feed head is installed, as shown in fig. 1 (a) and 1 (b) below. The feed-forward antenna may be further divided into a single reflecting surface antenna and a double reflecting surface antenna according to the number of reflecting surfaces of the antenna, as shown in fig. 2 (a) and 2 (b) below. Meanwhile, the dual reflection surface antennas may be classified into a cassegrain antenna, a gligay antenna, a loop focal antenna, and the like according to the difference of the second reflection surfaces.
The common structure of the feed-forward dual-reflection-surface satellite antenna is shown in fig. 3, wherein the active radio frequency component is basically located at the rear end of the parabolic antenna (wherein the direction of the parabolic surface towards the focal point of the parabolic surface is called the front end of the parabolic surface, and the rear end is opposite to the front end of the parabolic surface), the received satellite signal is transmitted from the feed source head to the radio frequency component at the rear end of the antenna emission surface, and the signal transmitted at a certain distance belongs to the radio frequency signal. The transmitted intermediate frequency signal is converted into a radio frequency signal through the radio frequency component, then transmitted to the feed source head (the distance from the radio frequency component to the feed source head is relatively long), and then transmitted. The signal loss in the transmitting process is larger, and the loss of the radio frequency signal is far larger than that of the intermediate frequency signal. Wherein the active device: refers to the existence of a power supply inside an electronic component when the electronic component works, namely, energy is needed to realize a specific function of the electronic component. Passive devices are electronic components that exhibit their characteristics without the need for an external power source.
In addition, the polarization direction of the radio wave signal transmitted or received by the antenna is determined according to the orientation of the electric field vector of the electric wave. In engineering, circular polarization and linear polarization are generally adopted, and the Ku-segment communication satellite signals on the market are basically in a linear polarization mode. Linear polarization is classified into horizontal polarization and vertical polarization, so that there is a problem in that it is necessary to modify the polarization direction when using a satellite antenna. The polarization mode in the structure of the feedforward satellite antenna needs to be adjusted, the direction of the whole radio frequency assembly behind the reflecting surface of the antenna needs to be adjusted, the operation is quite troublesome, and the workload is high. The feed source part and the radio frequency component of the structure need to be disassembled and assembled separately, and the steps are relatively complex.
Disclosure of Invention
In order to overcome the technical defects, the invention provides a satellite antenna for improving the receiving and transmitting efficiency of a feedforward double-reflection parabolic antenna, which reduces the transmitting loss and improves the G/T value of a received signal.
In order to solve the problems, the invention is realized according to the following technical scheme:
the invention relates to a satellite antenna for improving the receiving and transmitting efficiency of a feedforward double-reflection parabolic antenna, which comprises an antenna communication assembly and a supporting assembly; the antenna communication assembly comprises a first reflecting surface, a second reflecting surface, a feed source radio frequency mechanism and an equipment box which are integrated into a whole; the feed source radio frequency mechanism is positioned between the first reflecting surface and the second reflecting surface; the equipment box is positioned at the bottom of the first reflecting surface or on the supporting component and is electrically connected with the feed source radio frequency mechanism; the feed source radio frequency mechanism comprises a power amplifier and a low noise amplifier which amplify signals.
Further, a polarization converter for converting linear polarization and circular polarization is arranged in the feed source radio frequency mechanism.
Further, a rotary joint for adjusting polarization is arranged at the bottom of the feed source radio frequency mechanism.
Further, the bottom of the feed source radio frequency mechanism is provided with a mounting shaft; the end of the mounting shaft, which is close to the first reflecting surface, is provided with an interface for transmitting and receiving.
Further, the signals transmitted and received through the interface are intermediate frequency signals.
Further, the first reflecting surface is positioned at the bottom of the installation shaft, and the second reflecting surface is positioned at the top of the feed source radio frequency mechanism.
Further, the first reflecting surface is positioned at the bottom of the installation shaft, and the second reflecting surface is supported right above the top of the feed source radio frequency mechanism through a fixing rod arranged on the first reflecting surface.
Further, a fixing seat used for being connected with the first reflecting surface is further arranged at the interface of the mounting shaft.
Further, the fixing seat comprises a mounting groove, a clamping column and a clamping ring, wherein the mounting groove is arranged on the first reflecting surface, the clamping column is arranged at the bottom of the mounting shaft and is inserted into the mounting groove, and the clamping ring is positioned around the periphery of the clamping top; the mounting groove is provided with a protrusion which can move up and down and is matched and connected with the clamping ring.
Further, the outer wall of the feed source radio frequency mechanism installation shaft is also provided with a clamping ring which is movably connected with the installation groove; the inner wall of the clamping ring is provided with threads matched with the outer wall of the mounting groove.
Compared with the prior art, the invention has the beneficial effects that:
the satellite antenna for improving the receiving and transmitting efficiency of the feedforward type double-reflection parabolic antenna integrates the existing feedforward source and the radio frequency component into a whole through the integrally designed feed source radio frequency mechanism, and meanwhile, the feed source rod is omitted, so that the distance between the feedforward source and the radio frequency component is greatly shortened. At the transmitting end, the signal reaches the feed source through short-distance transmission after passing through the power amplifier, and then is transmitted out, and the loss of the part is much smaller than that of the traditional satellite antenna, which is transmitted through the power amplifier and the feed source through long-distance transmission (the transmission loss of the part is quite large in the waveguide due to the fact that the part transmits the radio frequency signal). However, in the receiving end of the invention, after the signal passes through the low noise amplifier, the G/T value of the receiving end is correspondingly improved.
Meanwhile, the integrated design makes the disassembly and assembly of the device simple, so that the polarization adjustment of the device is correspondingly simple and convenient.
In addition, the installation shaft at the bottom of the feed source radio frequency mechanism is provided with an interface for transmitting and receiving, and the signal input and output of the installation shaft are intermediate frequency signals, so that the wiring is greatly facilitated.
Drawings
The invention is described in further detail below with reference to the attached drawing figures, wherein:
FIGS. 1 (a) and 1 (b) are schematic structural diagrams of conventional feedforward and offset-feedback satellite antennas in the background of the invention;
fig. 2 (a) and 2 (b) are schematic structural diagrams of a single-reflecting-surface antenna and a double-reflecting-surface satellite antenna in a conventional feedforward antenna according to the background of the invention;
FIG. 3 is a schematic diagram of a conventional feed-forward dual-reflector satellite antenna according to the background of the invention;
fig. 4 is a schematic perspective view of a satellite antenna for improving receiving and transmitting efficiency of a feed-forward dual-reflection parabolic antenna according to embodiment 1 of the present invention;
FIG. 5 is a side view of the received signal reflection line identified in FIG. 4;
fig. 6 is a front view of a satellite antenna for improving the receiving and transmitting efficiency of a feed-forward dual-reflection parabolic antenna according to embodiment 1 of the present invention;
FIG. 7 is an enlarged view of A in FIG. 6;
fig. 8 (a) is a schematic structural diagram of a guide rail base in a satellite antenna for improving receiving and transmitting efficiency of a feed-forward dual-reflection parabolic antenna according to embodiment 1 of the present invention;
FIG. 8 (b) is a schematic structural diagram of a sectional combination of guide rail bases in a satellite antenna for improving receiving and transmitting efficiency of a feed-forward dual-reflection parabolic antenna according to embodiment 1 of the present invention;
FIG. 8 (c) is a schematic view of a structure of a guide rail base of a satellite antenna for improving receiving and transmitting efficiency of a feed-forward double-reflection parabolic antenna according to embodiment 1 after being disassembled and stored;
fig. 9 is a schematic perspective view of a satellite antenna for improving receiving and transmitting efficiency of a feed-forward dual-reflection parabolic antenna according to embodiment 2 of the present invention;
fig. 10 is a schematic perspective view of a satellite antenna for improving receiving and transmitting efficiency of a feed-forward dual-reflection parabolic antenna according to embodiment 3 of the present invention.
In the figure:
101: antenna reflecting surface 102: feed source 103: feed source rod
104: active radio frequency component 105: the equipment box 106: supporting frame
201: first reflective surface 202: second reflecting surface 203: feed radio frequency mechanism 204: the first reflecting surface is supported
205: the fixing base 206: interface 207: support leg 208: support column 209: supporting head
210: drive bracket 211: driving wheel 212: a motor 213: equipment box
214: flip support bar 215: pitching push rod 216: guide rail base 217: fixing rod 218: mounting shaft
219: mounting groove 220: clip post 221: collar 222: clasp 223: rotation joint 224: feed source
Detailed Description
The preferred embodiments of the present invention will be described below with reference to the accompanying drawings, it being understood that the preferred embodiments described herein are for illustration and explanation of the present invention only, and are not intended to limit the present invention.
The satellite antenna for improving the receiving and transmitting efficiency of the feedforward type double-reflection parabolic antenna integrates the existing feedforward source and the radio frequency component into a whole through the integrally designed feed source radio frequency mechanism 203, namely has the function of the feedforward source, and simultaneously has the function of receiving and transmitting signals, so that the feedforward source and the radio frequency are structurally positioned in the feed source radio frequency mechanism 203, and the distance between the feedforward source and the radio frequency is greatly reduced.
At the transmitting end, the signal reaches the feed source through short-distance transmission after passing through the power amplifier, and then is transmitted out, and the loss of the part is much smaller than that of the traditional satellite antenna, which is transmitted through the power amplifier and the feed source through long-distance transmission (the transmission loss of the part is quite large in the waveguide due to the fact that the part transmits the radio frequency signal). At the receiving end, after the signal passes through the low noise amplifier, the G/T value of the receiving end is correspondingly improved.
In order to better understand the structure of the satellite antenna for improving the receiving and transmitting efficiency of the feedforward-type double-reflection parabolic antenna, the following specific description is made with reference to the accompanying drawings:
example 1:
as shown in fig. 4-7, the satellite antenna for improving the receiving and transmitting efficiency of the feed-forward double-reflection parabolic antenna comprises an antenna communication assembly and a supporting assembly.
The antenna communication assembly comprises a first reflecting surface 201, a second reflecting surface 202, a feed source radio frequency mechanism 203 and a device box 213; the feed rf mechanism 203 is located between a first reflecting surface 201 and a second reflecting surface 202, specifically, in this embodiment, the first reflecting surface 201 is located at the bottom of the feed rf mechanism 203, and the second reflecting surface 202 is located at the top of the feed rf mechanism 203. The device box 204 is located on the bottom or support assembly of the antenna reflecting surface 201 and is electrically connected to the feed radio frequency mechanism 203.
The feed source radio frequency mechanism 203 is directly connected with the equipment box 213, thereby facilitating wiring. Specifically, a mounting shaft 218 is arranged at the bottom of the feed source radio frequency mechanism 203; the end of the mounting shaft 218 near the first reflecting surface 201 is provided with an interface 206 for transmitting and receiving, and the signals passing through the interface 206 are all intermediate frequency signals, as shown in fig. 7.
Specifically, the first reflecting surface 201 is located at the bottom of the mounting shaft 218, and the second reflecting surface 202 is located at the top of the feed rf mechanism 203.
Meanwhile, in this embodiment, the feed source rf mechanism 203 is an active device, that is, a power supply is needed, and it further includes an up-conversion module, a power amplifier (not shown in the figure, all located in the feed source rf mechanism 203), and a feed source head 224, and its working principle is: the transmitted signal is converted into a radio frequency signal through the up-conversion module, is subjected to power amplification through the power amplifier, is transmitted to the second reflecting surface 202 through a feed source, and is reflected by the first reflecting surface 201 to be transmitted to a satellite; when receiving signals, the feed source head receives signals, the low noise amplifier amplifies the signals, and the signals are processed by the down-conversion module to become intermediate frequency signals.
In order to adjust the polarization, that is, when the antenna is used in different regions, the polarization angle of the antenna feed source rf mechanism 203 needs to be continuously consistent with the polarization direction (vertical or horizontal polarization) of the satellite carrier signal due to the change of longitude and latitude, so as to ensure smooth transmission and reception of the signal.
Specifically, if the signal is in the linear polarization signal at the Ku end, only the direction of polarization needs to be adjusted; the rotary joint 224 arranged on the mounting shaft 218 is manually screwed to realize circumferential rotation, the feed source radio frequency mechanism 203 is screwed to the local position according to the angle scale on the mark to perform coarse alignment by referring to the reference table of the carrier signal polarization directions of the satellite in different areas, and then fine alignment is completed by rotating and fine-adjusting to the highest signal value left and right, so that the method is extremely convenient.
If the signal is processed on the circularly polarized signal of the Ka segment, the adjustment from circular polarization to linear polarization needs to be performed by a polarization converter. The polarization converter is arranged in the feed source radio frequency mechanism 203. If the polarization direction is also required to be adjusted, the above means can be used.
In addition, in order to facilitate the disassembly and assembly, the interface 206 of the feed source radio frequency mechanism 203 is further provided with a fixing seat 205 for rotationally connecting with the first reflecting surface, which specifically comprises a mounting groove 219 mounted on the first reflecting surface, a clamping column 220 arranged at the bottom of the mounting shaft 218 and inserted into the mounting groove 219, and a clamping ring 221 positioned around the periphery of the clamping top; the mounting groove 219 is provided with a protrusion (not shown) which can move up and down and is matched with the clamping ring 221; the outer wall of the mounting shaft 218 is also provided with a clamping ring 222 movably connected with the mounting groove 219; the inner wall of the clamping ring 222 is provided with threads matched with the outer wall of the mounting groove.
In the specific installation, only the clamping post 220 is required to be inserted into the installation groove 219, the clamping post is further matched with the protrusion through the clamping ring 221, and the outer wall of the installation groove 219 is further reinforced through the rotation of the clamping ring 222, so that the installation method is simple and convenient, and the structure is simple.
Meanwhile, in a specific disassembly and assembly process, the snap ring 222 is reversed to be separated from the mounting groove 219, and then the clamping column 220 is pulled out of the mounting groove 219.
The feed source rf mechanism 203 is in a truncated cone shape or a column shape, wherein the column shape includes a cylinder, a triangular prism, and the like, and the shape is only used as a carrier of the feed source rf mechanism 203 having a feed source and an rf function, so that the shape is not limited.
The first reflecting surface 201 may be either a spliced or a monolithic design. For the splicing design, the novel portable folding bed is more convenient to carry or transport after being disassembled and assembled.
The support assembly is also connected with a driving assembly for providing horizontal rotation of the support assembly; the driving component is positioned on the end surface of the supporting component; the support assembly is slidably coupled to the rail mount 216; wherein the drive assembly is provided with at least three groups.
The driving assembly is provided with at least three groups, namely, the driving assembly for providing horizontal power for the supporting assembly is independently provided with a power source, and specifically, the driving assembly comprises a driving bracket 210, a driving wheel 211 and a motor 212; the motor 212 is used for providing accurate power to ensure the accuracy of the sliding of the driving wheel 211 on the guide rail base 216; the driving bracket 210 serves as a support so that the driving wheel 211 fixed to one end of the driving bracket 210 provides a strong support; the driving wheel 211 is slidably engaged with the rail base 216, and is located at one end of the driving bracket 210, and is in transmission connection with the motor 212. In the actual operation process, when the motor 212 rotates, the driving wheel 211 is driven to slide on the guide rail base 216 according to the precision under the power correspondence, so as to realize the precision requirement on the horizontal rotation of the support assembly.
It should be noted that: the number of the driving brackets 210 is determined according to the specific number of the driving components, in this embodiment, three groups of driving components are adopted, and the driving brackets 210 are correspondingly arranged into three groups. The number may also be four, five or more, again falling within the scope of the invention, but three groups are sufficient for firm support and driving with respect to the present embodiment, and the construction is the simplest and the corresponding lowest cost.
Wherein, the guide rail base 216 is a sheet-shaped ring, which may be a curled ring, as shown in fig. 8 (a), and the state represents that the guide rail base 216 may be an integral ring that is not detachable, or may be a ring that is detachable from the beginning to the end; or may be a segmented combination of rings, particularly as shown in fig. 8 (b). After being split and fully rolled, the utility model is contracted into a roll, which is convenient to carry, as shown in fig. 8 (c).
In order to further improve the precision, the guide rail base 216 may further be provided with a bar-shaped groove or hole engaged with the driving assembly, and the bar-shaped grooves or holes are equidistantly distributed, so that the driving assembly can further control the precision of the movement during the movement.
In order to increase the friction between the driving wheel 211 and the guide rail base 216, a rubber ring is arranged between the driving wheel 211 and the guide rail base 216, so that the friction between the driving wheel 211 and the guide rail base 216 is increased, and the driving wheel 211 is prevented from slipping on the guide rail base 216.
The support assembly comprises a device box 213, a turnover support rod 214 and a pitching push rod 215; the other end of the driving bracket 210 is fixed to the apparatus case 213; the top of the turnover supporting rod 214 is pivoted to the bottom of the first reflecting surface support 204, and the bottom is fixed on the upper surface of the equipment box 213; the top of the pitching pushing rod 215 is located at the bottom of the first reflecting surface 201, and the bottom is fixed to the upper surface of the equipment box 213.
The embodiment adopts automation to adjust the horizontal angle and the pitching angle, and the adjustment efficiency is higher.
Also to be described is: the double-reflection parabolic satellite antenna suitable for the invention comprises a Cassegrain antenna, a Grignard antenna, a circular focal antenna and the like, wherein the secondary reflection surface of the Cassegrain antenna is a hyperboloid of revolution; the secondary reflection surface of the Grignard antenna is an ellipsoid; the secondary reflecting surface of the annular focus antenna is formed by rotating an elliptical arc around the parabolic axis of the antenna for one circle.
Example 2:
the difference between the present embodiment and embodiment 1 is limited to: the second reflecting surface 202 is fixed in a manner, specifically, as shown in fig. 9, and is supported directly above the top of the feed rf mechanism 203 by a fixing rod 217 mounted on the first reflecting surface 201, that is, the second reflecting surface 202 is separated from the feed rf mechanism 203, but the working principle is completely identical to that of embodiment 1.
Example 3:
the present embodiment differs from embodiment 1 in that: in this embodiment, the adjustment of the horizontal angle and the pitch angle is performed by manual adjustment. Specifically, as shown in fig. 10, it includes a support foot 207 at the bottom, a support column 208 at the top of the support foot 207, and a support head 209 hinged to the top of the support column 208.
In a specific use process, the adjustment of the horizontal angle is completed by rotating the support column 208, and the adjustment of the pitch angle is completed by adjusting the hinge angle between the support head 209 and the support column 208.
In this embodiment, the angle cannot be automatically adjusted, but the overall structure is relatively simple and lightweight.
The technology for automatically adjusting the horizontal angle and the pitch angle of the satellite antenna for improving the receiving and transmitting efficiency of the feedforward-type double-reflection parabolic antenna and other structures in this embodiment are referred to in the prior art, and are not described herein.
The present invention is not limited to the preferred embodiments, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical principles of the present invention are within the scope of the technical proposal of the present invention.
Claims (7)
1. The utility model provides an improve satellite antenna of feedforward type double reflection parabolic antenna receiving and transmitting efficiency which characterized in that: comprises an antenna communication assembly and a support assembly;
the antenna communication assembly comprises a first reflecting surface, a second reflecting surface, a feed source radio frequency mechanism and an equipment box which are integrated into a whole;
the feed source radio frequency mechanism is positioned between the first reflecting surface and the second reflecting surface;
the equipment box is positioned at the bottom of the first reflecting surface or on the supporting component and is electrically connected with the feed source radio frequency mechanism;
the feed source radio frequency mechanism comprises a power amplifier and a low noise amplifier which amplify signals; the feed source and the radio frequency component are both positioned in the feed source radio frequency mechanism;
a polarization converter for converting linear polarization and circular polarization is arranged in the feed source radio frequency mechanism;
the bottom of the feed source radio frequency mechanism is provided with a rotary joint for adjusting polarization;
the bottom of the feed source radio frequency mechanism is provided with a mounting shaft;
the first reflecting surface is positioned at the bottom of the installation shaft, and the second reflecting surface is positioned at the top of the feed source radio frequency mechanism.
2. The satellite antenna for improved receiving and transmitting efficiency of a feed-forward dual-reflecting parabolic antenna according to claim 1, wherein:
the end of the mounting shaft, which is close to the first reflecting surface, is provided with an interface for transmitting and receiving.
3. The satellite antenna for improved receiving and transmitting efficiency of a feed-forward dual-reflecting parabolic antenna according to claim 2, wherein:
the signals transmitted and received through the interface are intermediate frequency signals.
4. The satellite antenna for improved receiving and transmitting efficiency of a feed-forward dual-reflecting parabolic antenna according to claim 1 or 2, wherein:
the first reflecting surface is positioned at the bottom of the installation shaft, and the second reflecting surface is supported right above the top of the feed source radio frequency mechanism through a fixing rod arranged on the first reflecting surface.
5. The satellite antenna for improved receiving and transmitting efficiency of a feed-forward dual-reflecting parabolic antenna according to claim 2, wherein:
the interface of the installation shaft is also provided with a fixing seat which is used for being connected with the first reflecting surface.
6. The satellite antenna for improved receiving and transmitting efficiency of a feed-forward dual-reflecting parabolic antenna according to claim 5, wherein:
the fixing seat comprises a mounting groove, a clamping column and a clamping ring, wherein the mounting groove is arranged on the first reflecting surface, the clamping column is arranged at the bottom of the mounting shaft and is inserted into the mounting groove, and the clamping ring is positioned around the periphery of the clamping top;
the mounting groove is provided with a protrusion which can move up and down and is matched and connected with the clamping ring.
7. The satellite antenna for improved receiving and transmitting efficiency of a feed-forward dual-reflecting parabolic antenna according to claim 6, wherein:
the outer wall of the feed source radio frequency mechanism installation shaft is also provided with a clamping ring which is movably connected with the installation groove;
the inner wall of the clamping ring is provided with threads matched with the outer wall of the mounting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710487488.9A CN107146949B (en) | 2017-06-23 | 2017-06-23 | Satellite antenna for improving receiving and transmitting efficiency of feedforward type double-reflection parabolic antenna |
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| CN201710487488.9A CN107146949B (en) | 2017-06-23 | 2017-06-23 | Satellite antenna for improving receiving and transmitting efficiency of feedforward type double-reflection parabolic antenna |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107579769B (en) * | 2017-10-19 | 2024-04-12 | 广州联星科技有限公司 | Transceiver and satellite communication terminal device |
| CN111799542B (en) * | 2020-06-28 | 2022-01-04 | 北京爱科迪通信技术股份有限公司 | Emergency communication satellite antenna |
| CN113113756B (en) * | 2021-04-12 | 2022-02-18 | 上海航天测控通信研究所 | High-integration satellite-borne radar antenna |
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|---|---|---|---|---|
| CN201466217U (en) * | 2009-06-10 | 2010-05-12 | 成都双流富华电子有限公司 | Ka band satellite communication antenna |
| CN101950844A (en) * | 2010-08-30 | 2011-01-19 | 北京爱科迪信息通讯技术有限公司 | Portable satellite antenna system with auxiliary star aiming device and star aiming method thereof |
| CN202285273U (en) * | 2011-07-11 | 2012-06-27 | 北京爱科迪信息通讯技术有限公司 | Satellite antenna |
| CN206893804U (en) * | 2017-06-23 | 2018-01-16 | 广州市易恒信息技术有限公司 | Improve the satellite antenna of positive feedback formula bireflectance parabola antenna reception and emission effciency |
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| US7839348B2 (en) * | 2008-06-03 | 2010-11-23 | Gary Baker | Automatic satellite tracking system |
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| CN201466217U (en) * | 2009-06-10 | 2010-05-12 | 成都双流富华电子有限公司 | Ka band satellite communication antenna |
| CN101950844A (en) * | 2010-08-30 | 2011-01-19 | 北京爱科迪信息通讯技术有限公司 | Portable satellite antenna system with auxiliary star aiming device and star aiming method thereof |
| CN202285273U (en) * | 2011-07-11 | 2012-06-27 | 北京爱科迪信息通讯技术有限公司 | Satellite antenna |
| CN206893804U (en) * | 2017-06-23 | 2018-01-16 | 广州市易恒信息技术有限公司 | Improve the satellite antenna of positive feedback formula bireflectance parabola antenna reception and emission effciency |
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