CN103515707B - A kind of rotation system of H-face array shortwave logarithm three-dimensional array antenna - Google Patents
A kind of rotation system of H-face array shortwave logarithm three-dimensional array antenna Download PDFInfo
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- CN103515707B CN103515707B CN201310453698.8A CN201310453698A CN103515707B CN 103515707 B CN103515707 B CN 103515707B CN 201310453698 A CN201310453698 A CN 201310453698A CN 103515707 B CN103515707 B CN 103515707B
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Abstract
The present invention discloses a kind of rotation system of H-face array shortwave logarithm three-dimensional array antenna, described antenna comprises bracing frame, what be erected on bracing frame is several by predetermined angle angular array, logarithm periodic antenna unit in fan-shaped distribution, support frame as described above is erected on the tower mast of a setting, described rotation system comprises switching mechanism and slew gear, described switching mechanism is arranged on tower mast top and is flexibly connected with bracing frame, for adjusting the elevation angle of described antenna, described slew gear is arranged on tower mast bottom, rotates realize horizontally rotating of described antenna by driving tower mast.The present invention is directed to new antenna system and supporting rotation system is set, achieving antenna of the present invention by set switching mechanism and slew gear can level 360 °, the adjustment at the full angle elevation angle, thus the signal biography enabling described antenna have the best after adjustment angle connects performance, plays the performance of H-face array shortwave logarithm three-dimensional array antenna of the present invention to greatest extent.
Description
Technical field
The present invention relates to communication antenna technical field, particularly relate to a kind of rotation system of H-face array shortwave logarithm three-dimensional array antenna.
Background technology
Tradition domestic shortwave large-scale antenna system based on broadband curtain antenna, as illustrated in fig. 1 and 2.Broadband curtain antenna is that horizontal directivity pattern is controlled by the number of every layer of array-element antenna by multilayer all-wave or half-wave dipole molecular antenna array, and height pattern is controlled by the number of plies of array-element antenna and the terrain clearance of lowermost layer antenna.Its advantage is that frequency band range is wider, power is comparatively large, propagation distance is far away.But the shortcoming of broadband curtain antenna also clearly, mainly comprises: 1 floor space is large, landform requires harsh; 2 antenna bodies are high, and structural volume is large; 3 engineering constructions are difficult, and the construction period is long; 4 use complicated operation, maintenance difficulty.
And broadband curtain antenna is generally external import, also there is development & production in Some Domestic producer on this system, but core technology does not break through, the product power produced is less, and coverage is narrow, and such product design is complicated, structure is loaded down with trivial details, parts are many, bulky, installation difficulty, and expensive, inconvenient maintenance, the more important thing is that core technology is under one's control, because fault can not be repaired in time after a lot of product introduction, cannot use.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of rotation system of H-face array shortwave logarithm three-dimensional array antenna, be intended to solve current broadband curtain antenna landform and require harsh, the problems such as construction difficulty, complicated operation.
Technical scheme of the present invention is as follows:
A kind of rotation system of H-face array shortwave logarithm three-dimensional array antenna, described antenna comprises bracing frame, what be erected on support frame as described above is several by predetermined angle angular array, logarithm periodic antenna unit in fan-shaped distribution, wherein, support frame as described above is erected on the tower mast of a setting, described rotation system comprises switching mechanism and slew gear, described switching mechanism is arranged on described tower mast top and is flexibly connected with support frame as described above, for adjusting the elevation angle of described antenna, described slew gear is arranged on described tower mast bottom, rotate by driving described tower mast and realize horizontally rotating of described antenna.
The rotation system of described H-face array shortwave logarithm three-dimensional array antenna, wherein, described switching mechanism comprise vertically be arranged on described tower mast top U-shaped frame, be arranged on latch in the middle of described U-shaped frame, be set in the link that described latch is fixedly connected with support frame as described above, realized the adjustment at the support frame as described above elevation angle around the rotation of described latch by described link.
The rotation system of described H-face array shortwave logarithm three-dimensional array antenna, wherein, described link is fixedly installed on the position of centre of gravity of support frame as described above.
The rotation system of described H-face array shortwave logarithm three-dimensional array antenna, wherein, described link comprises two stocks be arranged in parallel and is positioned at described stock two ends, being horizontally set with two quarter butts in the middle of two stocks, being provided with the through hole for being set on described latch in the middle part of described stock.
The rotation system of described H-face array shortwave logarithm three-dimensional array antenna, wherein, described slew gear comprises the vertical columns being set in described tower mast bottom, and described vertical columns is flexibly connected with described tower mast.
The rotation system of described H-face array shortwave logarithm three-dimensional array antenna, wherein, described vertical columns bottom is arranged on the concrete basis for providing constant intensity for described antenna.
The rotation system of described H-face array shortwave logarithm three-dimensional array antenna; wherein; described switching mechanism and slew gear are controlled by control device for pivoting; described control device for pivoting comprise processor that data processing and control signal export, motor, for carry out overload protection slip-clutch, for realize the static location of described antenna brake, for sending the angular encoder of rotational angle instruction, described motor, slip-clutch, brake, angular encoder are electrically connected with described processor respectively
Beneficial effect: the rotation system that the invention provides a kind of H-face array shortwave logarithm three-dimensional array antenna, for the supporting rotation system set by this new antenna system of H-face array shortwave logarithm three-dimensional array antenna, achieving antenna of the present invention by set switching mechanism and slew gear can level 360 °, the adjustment at the full angle elevation angle, thus the signal biography enabling described antenna have the best after adjustment angle connects performance, play the performance of H-face array shortwave logarithm three-dimensional array antenna of the present invention to greatest extent, there is splendid application prospect.
Accompanying drawing explanation
Fig. 1 is the structural representation of Conventional wide band curtain antenna.
Fig. 2 is the end view of Conventional wide band curtain antenna.
Fig. 3 is the structural representation of the rotation system of H-face array shortwave logarithm three-dimensional array antenna of the present invention.
Fig. 4 is the system composition schematic diagram of the rotation system of H-face array shortwave logarithm three-dimensional array antenna of the present invention.
Fig. 5 is the assembly line bilinear model schematic diagram of the rotation system of H-face array shortwave logarithm three-dimensional array antenna of the present invention.
Fig. 6 is the control system schematic diagram of the rotation system of H-face array shortwave logarithm three-dimensional array antenna of the present invention.
Embodiment
The invention provides a kind of rotation system of H-face array shortwave logarithm three-dimensional array antenna, for making object of the present invention, technical scheme and effect clearly, clearly, the present invention is described in more detail below.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Logarithm periodic antenna (LPDA) is that a kind of broadband sky with very advantageous electrical properties connects, it is all similar to and has nothing to do with frequency in the main electric parameters such as input impedance, directional diagram, gain coefficient, its electrical characteristics become logarithm period relation with operating frequency and change, namely in arbitrary frequency f
0the characteristic had is by all f
n=τ f
0frequency on repeat, f herein
0-> τ nf
0be called one-period (τ is cycle rate, n=± 1,2,3 ...).If can design in one-period internal antenna electrical characteristics is a constant, then when all frequency operation, all can think that same frequency has nothing to do, this structure is just called logarithm periodic antenna.
The theory of the fan-shaped battle array of logarithm periodic antenna than the line array in isotropism unit composition much complicated, and can not application direction layer control.The present invention's application moment method is analyzed the fan-shaped battle array of free space horizontal and vertical Log Periodic Dipole Antenna, and pair array parameter is carried out detailed analytical calculation to the impact of antenna performance thus realized the optimization of antenna performance.
A kind of H-face array shortwave logarithm three-dimensional array antenna as shown in Figure 3, wherein, comprise aerial array and the bracing frame for setting up described aerial array, described aerial array comprises several logarithm periodic antenna unit, by predetermined angle angular array between described several logarithm periodic antenna unit, in fan-shaped distribution.The selection of predetermined angle angle is carried out according to antenna gain and antenna pattern, as improper in selected, can fall and cause antenna gain and different design, directional diagram distorts, thus affecting the overall performance of aerial array, in preferred embodiment, this predetermined angle angle is 15 degree, under this angle angle, antenna gain and directional diagram all meet designing requirement.
The arrangement that support frame as described above comprises corresponding described logarithm periodic antenna unit is several horizontal truss 210 of fan-shaped distribution, the vertical trusses 220 for fixing described horizontal truss 210, preferably, at the tie point of horizontal truss and vertical trusses, and two tie points being in diagonal relationships arrange the brace for improving bracing frame intensity again.Described logarithm periodic antenna unit is separately positioned on corresponding horizontal truss 210.Described logarithm periodic antenna unit comprise arrange along horizontal truss assembly line 110, be successively set on the antenna oscillator 120 on assembly line 110 by order from short to long.Described assembly line is arranged on the centre position of horizontal truss and is fixed, and the size of described assembly line is calculated by assembly line theoretical model to obtain, and the theoretical model of assembly line is generally traditional bilinear model, as shown in Figure 5, wherein L is two-wire length, and S is two-wire spacing, D is two-wire diameter, ε
rfor medium relative dielectric constant, by the even odd mode theory in microwave technology, the assembly line size meeting index request can be obtained.
Preferably, described aerial array comprises 4 logarithm periodic antenna unit, described horizontal truss relative set is 4, described logarithm periodic antenna unit is not limited to 4, can arrange as required, each horizontal truss is provided with a logarithm periodic antenna unit, initial near one end, fan-shaped summit from described assembly line, described antenna oscillator is successively set on described assembly line by order from short to long.Described antenna oscillator number is 32 right, and between adjacent antenna elements, interval is according to logarithm period aligned transfer, and certainly, it is 32 right that antenna oscillator quantity is not limited to, and also can adjust the quantity of antenna oscillator as required.
Support frame as described above is erected on the tower mast 322 of a setting, described rotation system comprises switching mechanism 310 and slew gear 320, described switching mechanism 310 is arranged on described tower mast 322 top and is flexibly connected with support frame as described above, for adjusting the elevation angle of described antenna, described slew gear 320 is arranged on described tower mast 322 bottom, rotates realize horizontally rotating of described antenna by driving described tower mast 322.
Described switching mechanism 310 comprise vertically be arranged on described tower mast top U-shaped frame 323, be arranged on latch 324 in the middle of described U-shaped frame 323, be set in the link 325 that described latch 324 is fixedly connected with support frame as described above, realized the adjustment at the support frame as described above elevation angle around the rotation of described latch by described link 325.Described link 325 comprises two stocks be arranged in parallel and is positioned at described stock two ends, being horizontally set with two quarter butts in the middle of two stocks, being provided with the through hole for being set on described latch in the middle part of described stock.Wherein, firm for ease of entire physical, described link 325 is fixedly installed on the position of centre of gravity of support frame as described above.
Described slew gear comprises the vertical columns 321 being set in described tower mast bottom, and described vertical columns 321 is flexibly connected with described tower mast 322.Described vertical columns 321 bottom is arranged on the concrete basis 330 for providing constant intensity for described antenna, and be provided with Universal rotary joint in described slew gear, radiofrequency signal is sent to antenna rotating part by antenna standing part by described Universal rotary joint.
Described switching mechanism and slew gear are controlled by control device for pivoting; described control device for pivoting comprise processor that data processing and control signal export, motor, for carry out overload protection slip-clutch, for realize the static location of described antenna brake, for sending the angular encoder of rotational angle instruction, described motor, slip-clutch, brake, angular encoder are electrically connected with described processor respectively.
Also include transmission and deceleration device, final stage exposed gear, overload protection arrangement (bull gear is fixed) etc. in addition in control device for pivoting, tower mast can be arranged on and also can be located at vertical columns part.Described angular encoder is just arranged on motor, and when behind the azimuth that setting needs, sending instruction can 360
orotate in place by the requirement of setting in scope.
Described slip-clutch is used to protect variable-frequency motor and driving parts; namely when the wind speed of blowing over antenna more than 120 kilometers/hour when; no matter at that time antenna is in rotation process or is still on a certain service position; this slip-clutch all can discharge the brake system of antenna automatically; even if transmitter works; also antenna can be made down the wind to rotate to the minimum position of resistance, and now transmitter also can fall high pressure from dynamic circuit breaker.This is the self-protection function (when detecting that wind speed is greater than limiting value, automatic releasing of brake, makes antenna be automatically brought to frontal resistance minimum state) of antenna.Non-slip during normal starting and braking.
Brake realizes the static location after rotary antenna to angle on target, the function that opposing strong wind causes antenna direction to drift about can also be born simultaneously, also has an effect in addition, namely when antenna is driven, when there is suddenly power failure during being in rotation and advancing, can prevent from impacting antenna structure owing to rocking the load caused.
as Fig. 4shown in be the rotation system of H-face array shortwave logarithm three-dimensional array antenna of the present invention system composition schematic diagram, wherein, transmitter 600 is transmitted by feeder line 620 and enters power splitter 640, outputed signal by power splitter 640 and inputted by each balanced to unbalanced transformer 630 input through feeder line, be transformed into balanced signal and be respectively each logarithm periodic antenna unit and power.It is preferred that the through type lightning arrester 610 of signal first through being connected on feeder line before entering power splitter that transmitter 600 is launched, thus ensure the safety of instrument and equipment.In addition, the crust of described feeder line also needs DC earthing.Described power splitter is power divider, by the energy distribution of coming in from input port to N number of output port, in the present invention program, power splitter is one point of four power splitter, is namely divided into four barss by a power splitter input port input signal and is exported by four output ports respectively.It is English " balanced-unbalanced transformer " abbreviation that described balanced to unbalanced transformer has another name called Ba Lun (Balun).Its effect, except balanced-unbalanced conversion, is also looked the form of Ba Lun, structure simultaneously, can be carried out the impedance transformation of the ratios such as 1:1,4:1,6:1,9:1,25:1.
Control system 500 is control device for pivoting, and both realize the control to antenna slew gear and switching mechanism by control line 510, and control line needs DC earthing equally.Power supply 700 connects antenna by power line 720 provides power for control system and transmitter etc., power line also needs connect surge protection device 710, realizes protecting the surge of the instantaneous overvoltage that indirect thunder and lightning and direct thunder and lightning produce.
Thunder and lightning has high voltage, big current and instantaneous feature pair and antenna system endangers huge, according to the requirement of engineering lightning protection, realizes lightning protection function to the antenna part of antenna and arrester (lightning rod) 400, downlead and earth electrode (earth mat).
As shown in Figure 6, control system assume responsibility for the adjustment of antenna rotational angle, and clutch, brake speed control, and antenna safety interlock controls, and manually, automatically adjusts handoff functionality, long-range, local controlling functions.Signal transmission between antenna control system CPU processor A 4 and input are by a remote I/O modules A 8, and namely Long-distance Control I/O scan module comes to intercom mutually.The preset value in orientation and actual value all can be presented on the touch-screen A1 of operating terminal through interface convertor A3, coupler A2.The angle of antenna is inputted by angle transcoder A7 user, frequency, and after inputting the fill order such as emergency cutoff S1, control for brake S2, clutch for clutch control S3, door node S4 further, control system starts the angle of angle and the reality relatively preset, then control system calculates the angle needing adjustment and also sends necessary control command to frequency converter A 5 and then drive motors A6, and these orders can ensure that antenna arrives the angle preset by shortest path.
The rotation system of H-face array shortwave logarithm three-dimensional array antenna provided by the invention, for the supporting rotation system set by this new antenna system of H-face array shortwave logarithm three-dimensional array antenna, achieving antenna of the present invention by set switching mechanism and slew gear can level 360 °, the adjustment at the full angle elevation angle, thus the signal biography enabling described antenna have the best after adjustment angle connects performance, play the performance of H-face array shortwave logarithm three-dimensional array antenna of the present invention to greatest extent, there is splendid application prospect.
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection range that all should belong to claims of the present invention.
Claims (4)
1. the rotation system of a H-face array shortwave logarithm three-dimensional array antenna, described antenna comprises bracing frame, what be erected on support frame as described above is several by predetermined angle angular array, logarithm periodic antenna unit in fan-shaped distribution, it is characterized in that, support frame as described above is erected on the tower mast of a setting, described rotation system comprises switching mechanism and slew gear, described switching mechanism is arranged on described tower mast top and is flexibly connected with support frame as described above, for adjusting the elevation angle of described antenna, described slew gear is arranged on described tower mast bottom, rotate by driving described tower mast and realize horizontally rotating of described antenna,
Described switching mechanism and slew gear are controlled by control device for pivoting, described control device for pivoting comprise processor that data processing and control signal export, motor, for carry out overload protection slip-clutch, for realize the static location of described antenna brake, for sending the angular encoder of rotational angle instruction, described motor, slip-clutch, brake, angular encoder are electrically connected with described processor respectively;
Described predetermined angle angle is 15 °;
Described switching mechanism comprise vertically be arranged on described tower mast top U-shaped frame, be arranged on latch in the middle of described U-shaped frame, be set in the link that described latch is fixedly connected with support frame as described above, realized the adjustment at the support frame as described above elevation angle around the rotation of described latch by described link;
Described slew gear comprises the vertical columns being set in described tower mast bottom, and described vertical columns is flexibly connected with described tower mast.
2. the rotation system of H-face array shortwave logarithm three-dimensional array antenna according to claim 1, is characterized in that, described link is fixedly installed on the position of centre of gravity of support frame as described above.
3. the rotation system of H-face array shortwave logarithm three-dimensional array antenna according to claim 1, it is characterized in that, described link comprises two stocks be arranged in parallel and is positioned at described stock two ends, being horizontally set with two quarter butts in the middle of two stocks, in the middle part of described stock, being provided with the through hole for being set on described latch.
4. the rotation system of H-face array shortwave logarithm three-dimensional array antenna according to claim 3, is characterized in that, described vertical columns bottom is arranged on the concrete basis for providing constant intensity for described antenna.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105633578B (en) * | 2015-12-17 | 2018-06-12 | 贵州振华天通设备有限公司 | A kind of soft oscillator logarithm period short-wave antenna structure |
| CN110867639B (en) * | 2019-11-26 | 2021-03-23 | 深圳市威富通讯技术有限公司 | Automatic array-forming control device and method for log periodic antenna array |
| CN111342197B (en) * | 2020-03-16 | 2024-03-22 | 河南爱科瑞特电子科技有限公司 | Miniaturized log periodic antenna |
| CN111430873B (en) * | 2020-03-26 | 2021-07-06 | 泰兴英武舟科技有限公司 | Rigid structure short wave double-layer log periodic antenna sector array |
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| GB1528125A (en) * | 1975-10-31 | 1978-10-11 | Marconi Co Ltd | Log periodic antennae |
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Effective date of registration: 20161229 Address after: 518000 Guangdong city of Shenzhen province Baoan District Xixiang Street Phoenix Gang community ICT company plant No. 1 building 2-4 Patentee after: Shenzhen City Weifu Communication Technology Co., Ltd. Address before: Guangdong city of Shenzhen province Baoan District 518102 China Industrial Zone guwu hang Cheng Da Dao Technology Park E block 1 floor West Patentee before: An accurate Hardwear Pty Ltd. is pushed up by Shenzhen |