CN102714354B - Device for adjusting downtilt angle of electrical downtilt antenna - Google Patents
Device for adjusting downtilt angle of electrical downtilt antenna Download PDFInfo
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- CN102714354B CN102714354B CN201180002261.1A CN201180002261A CN102714354B CN 102714354 B CN102714354 B CN 102714354B CN 201180002261 A CN201180002261 A CN 201180002261A CN 102714354 B CN102714354 B CN 102714354B
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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
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
- H01Q3/32—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by mechanical 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
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/246—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for base stations
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Abstract
The invention embodiments disclose a device for adjusting a downtilt angle of an electrical downtilt antenna and the device comprises a driving device used for driving at least one phase shifter to move to realize the adjustment of the downtilt angle of the electrical downtilte antenna, and a downtilt angle displaying device which is coupled to the driving device, wherein the downtilt angle displaying device is used to indicate a state of downtilt angle variation generated by the phase shifter being driven by the driving device through digital display or a machinery rotating method. The invention embodiments effectively reduce the packaging size of an antenna, and saves package and transportation costs.
Description
Technical field
The present invention relates to communication equipment technical field, particularly a kind of electrical down-tilting antenna angle of declination adjusting device.
Background technology
In mobile radio communication engineering design, should reasonably select antenna for base station according to actual conditions such as the coverage requirement of network, telephone traffic distribution, anti-interference requirement and network service qualitys.Conventionally after antenna for base station is selected, also need the angle of declination of antenna for base station to adjust, to adjust the overlay area of antenna for base station signal.
Downtilt is rationally set and not only can reduces the impact of co-channel interference, effectively control the coverage of base station and the soft-switch proportion of whole net (for cdma network), and can strengthen the signal strength signal intensity in this base station overlay area.Conventionally two aspects that are set with of Downtilt stress, and lay particular emphasis on to disturb to suppress and lay particular emphasis on to strengthen covering.This two aspect stresses corresponding different respectively angle of declination algorithms.Generally speaking, should lay particular emphasis on to consider to disturb suppress the intensive area of base station distribution, the more sparse area of base station distribution lays particular emphasis on to be considered to strengthen covering.
At present, the Downtilt conventionally adopting be adjusted into mechanical tilt and two kinds of adjustment modes of electrical tilt.
Mechanical tilt is downward-sloping antenna physically, although adopt this technology also can make co-channel interference reduce, owing to adopting physics to have a down dip, its construction and safeguard very trouble, and it adjusts the precision lower (stepping accuracy is 1 °) at inclination angle.In addition due to tilt angled down, be the theoretical value of analogue, and theoretical optimal value have certain deviation.In network is adjusted, must first base station system be shut down, can not in adjusting day line process, monitoring simultaneously adjust effect, can not carry out intense adjustment to network.
The principle of electrical tilt is by changing the phase place of conllinear array antenna oscillator, changes the amplitude size of vertical component and horizontal component, changes synthetic component field intensity intensity, thereby the vertical directivity pattern of antenna is had a down dip.Because the field intensity intensity of antenna all directions increases and reduces simultaneously, guarantee changing inclination angle aft antenna directional diagram variation not quite, main lobe direction coverage distance is shortened, and the while makes again whole directional pattern reduce area coverage in sector, Serving cell but does not produce interference.Facts have proved, electric melody aerial lower inclination angle degree when 1 °-5 ° change, its antenna pattern and mechanical antenna roughly the same; When tilt angled down is when changing for 5 °-10 °, the slightly improvement of the more mechanical antenna of its antenna pattern; When tilt angled down is when changing for 10 °-15 °, the variation of the more mechanical antenna of its antenna pattern is larger; After 15 ° of mechanical antenna downtilt, the obvious difference of the more mechanical antenna of its antenna pattern, at this moment antenna pattern shape changes not quite, and main lobe direction coverage distance obviously shortens, and whole antenna pattern is all in this base station section, increase tilt angled down, can make sector area coverage dwindle, but not produce interference, such directional diagram is our needs, therefore adopt electrical tilt antenna can reduce call loss, reduce to disturb.
As depicted in figs. 1 and 2, electrical down-tilting antenna is a development trend of antenna industry, the angle of declination of electrical down-tilting antenna is that the phase place that drives phase shifter to change from input to unit by drive unit regulates, and wherein angle of declination shows different readings by the scale bar 101 with scale or like with rectilinear motion mode.But exposed scale bar 101 is not rainproof, snow, and especially sleet, snow ice, can freeze scale bar 101, affects electric conditioning function.For fear of above-mentioned defect, conventionally at scale bar 101, add scale bar protective jacket 102 at present, but, can cause antenna length to increase, increase package length, the operating space when increasing freight and increase simultaneously the risk of upper tower collision in tandem (during upper tower crane dress because head protector stretches out the risk that long existence is miscued) and affecting project installation.
Therefore, how to reduce antenna packaging volume, save packing cost and cost of transportation, improve installation reliability, become those skilled in the art's important technological problems urgently to be resolved hurrily.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of electrical down-tilting antenna angle of declination adjusting device, can reduce antenna packaging volume, saves packing cost and cost of transportation, improves installation reliability.Its concrete scheme is as follows:
An electrical down-tilting antenna angle of declination adjusting device, comprising:
Drive unit, realizes the adjustment of electrical down-tilting antenna angle of declination in order to drive at least one phase shifter to move; And
Angle of declination display unit, described angle of declination display unit and described drive unit are of coupled connections, for showing by numeral or mechanical rotation mode is indicated the changing condition of the angle of declination that described phase shifter produces with the driving of described drive unit.
From above-mentioned technical scheme, can find out that the disclosed a kind of electrical down-tilting antenna angle of declination adjusting device of the embodiment of the present invention drives phase shifter to move to realize the adjustment of electrical down-tilting antenna angle of declination by drive unit outputting power.Angle of declination display unit shows by numeral or mechanical rotation mode is indicated the changing condition of the angle of declination that described phase shifter produces with the driving of drive unit.The disclosed numeral of the embodiment of the present invention shows or the angle of declination display unit of mechanical rotation mode indication has reduced antenna packaging volume effectively, has saved packing cost and cost of transportation.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of existing angle of declination display unit;
Fig. 2 is the structural representation that existing button is provided with the angle of declination display unit of scale bar protective jacket;
Fig. 3 is that the disclosed electrical down-tilting antenna angle of declination of embodiment of the present invention adjusting device removes the structural representation after axial push-pull device at fixed;
Fig. 4 is the structural representation of the disclosed angle of declination display unit of the embodiment of the present invention;
Fig. 5 is the structural representation of the disclosed a kind of electrical down-tilting antenna angle of declination adjusting device of the embodiment of the present invention;
Fig. 6 is the structural representation that the disclosed angle of declination of the embodiment of the present invention is adjusted to the electrical down-tilting antenna angle of declination adjusting device after minimum;
Fig. 7 is the structural representation that the disclosed angle of declination of the embodiment of the present invention is adjusted to the angle of declination display unit after minimum;
Fig. 8 is the structural representation of the electrical down-tilting antenna angle of declination adjusting device in the disclosed angle of declination adjustment process of the embodiment of the present invention;
Fig. 9 is the structural representation of the angle of declination display unit in the disclosed angle of declination adjustment process of the embodiment of the present invention;
Figure 10 is the structural representation that the disclosed angle of declination of the embodiment of the present invention is adjusted to the electrical down-tilting antenna angle of declination adjusting device after maximum;
Figure 11 is the structural representation that the disclosed angle of declination of the embodiment of the present invention is adjusted to the angle of declination display unit after maximum.
Embodiment
The embodiment of the invention discloses a kind of electrical down-tilting antenna angle of declination adjusting device, it can reduce antenna packaging volume, saves packing cost and cost of transportation, improves installation reliability.
The disclosed a kind of electrical down-tilting antenna angle of declination adjusting device of the embodiment of the present invention, comprise: drive unit, in order to drive at least one phase shifter to move, realize the adjustment of electrical down-tilting antenna angle of declination, drive unit outputting power drives phase shifter to move to realize the adjustment of electrical down-tilting antenna angle of declination;
Angle of declination display unit, described angle of declination display unit be connected to described drive unit and be of coupled connections, for showing by numeral or mechanical rotation mode is indicated the changing condition of the angle of declination that described phase shifter produces with the driving of described drive unit.
The disclosed a kind of electrical down-tilting antenna angle of declination adjusting device of the embodiment of the present invention, drives phase shifter to move to realize the adjustment of electrical down-tilting antenna angle of declination by drive unit outputting power.Angle of declination display unit shows by numeral or mechanical rotation mode is indicated the changing condition of the angle of declination that described phase shifter produces with the driving of described drive unit.The disclosed numeral of the embodiment of the present invention shows or the angle of declination display unit of mechanical rotation mode indication has reduced antenna packaging volume effectively, packing cost and cost of transportation have been saved, and very useful to antenna end face layout designs and project installation, reliability is high.
Concrete, when angle of declination display unit is indicated the changing condition of angle of declination by mechanical rotation mode, it comprises a dial and the pointer that can rotate with respect to described dial, described dial or described pointer can be along with the driving of described drive unit corresponding rotation with the variation of the relative position by described dial and pointer, show the changing condition of the angle of declination that described phase shifter produces with the driving of described drive unit.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 3-Fig. 5, Fig. 3 is that the disclosed electrical down-tilting antenna angle of declination of embodiment of the present invention adjusting device removes the structural representation after axial push-pull device at fixed; Fig. 4 is the structural representation of the disclosed angle of declination display unit of the embodiment of the present invention; Fig. 5 is the structural representation of the disclosed a kind of electrical down-tilting antenna angle of declination adjusting device of the embodiment of the present invention.
The disclosed driving-chain of above-described embodiment can specifically comprise screw rod 4 and axial push-pull device at fixed 9.Wherein, rotary drive unit 6 is arranged on mount pad, for output drive strength, and drive screw 4 rotations.Screw rod 4 is supported on mount pad rotationally, and it is connected with rotary drive unit 6.Axially push-pull device at fixed 9 is threaded with screw rod 4, and can move axially along screw rod 4, is connected with pull bar 2 on it.In the process of rotating at rotary drive unit 6 drive screws 4, axially push-pull device at fixed 9 will, along the moving axially of screw rod 4, by changing turning to of rotary drive unit 6, can correspondingly change the moving direction of axial push-pull device at fixed 9.Phase shifter 1 is connected with pull bar 2, when axially push-pull device at fixed 9 moves axially along screw rod 4, drives phase shifter 1 to move, thereby can complete the effect that electrical down-tilting antenna angle of declination is adjusted by pull bar 2.The embodiment of the present invention is by adopting the angle of declination display unit of dial plate display scale form, effectively reduced antenna packaging volume, packing cost and cost of transportation have been saved, and very useful to antenna end face layout designs and project installation, reliability is high, especially band number is more, and effect is more remarkable.
Angle of declination display unit is connected by transmission device with screw rod 4, and stretches in mount pad outward, so that the angle of declination that observation post shows.Angle of declination display unit has rotating part 81 and static needle dial 82.Wherein, rotating part 81 comprises the dial 811 being connected with transmission device, and needle dial 82 buttons are located on dial 811, and are connected with mount pad.Screw rod 4 can rotate by transmission device driven rotary part 81, then makes dial 811 rotate, thereby makes the corresponding scale on dial 811 corresponding with the pointer on needle dial 82, to identify corresponding angle of declination.
It will be understood by those skilled in the art that, also needle dial 82 can be connected with transmission device, and dial 811 is fixed on to mount pad, screw rod 4 can drive needle dial 82 to rotate by transmission device, thereby make the pointer on needle dial 82 corresponding with the corresponding scale on dial 811, to identify corresponding angle of declination.(understand be that dial 811 can be arranged on static needle dial 82 herein, and needle dial 822 is arranged on rotating part 81, as long as needle dial is relative static with one of dial, and a relative motion, numeral can be selected arbitrarily with pointer on both)
Seen from the above description, the disclosed electrical down-tilting antenna angle of declination of embodiment of the present invention adjusting device, drives screw rod 4 to rotate by rotary drive unit 6 outputting powers, according to the difference that turns to of screw rod 4, can make axial push-pull device at fixed 9 move along screw rod 4 axial reciprocatings.Along with driving pull bar 2 and promote phase shifter 1, the movement of axial push-pull device at fixed 9 moves, to realize the adjustment of corresponding Downtilt.Angle of declination display unit has dial 811 and button is located at the needle dial 82 on dial 811.So in the process of rotating at screw rod 4, screw rod 4 can rotate with set rotating speed with drive dial 811 or needle dial 82 by drive transmission, and needle dial 82 and dial 811 are produced relative rotation, thereby demonstrate scale on the dial 811 after screw rod 4 rotates and the opposite position of the pointer on needle dial 82, then the travel displacement of phase shifter 1 is changed into angle of declination and be presented in angle of declination display unit.
The angle of declination display unit of the disclosed dial plate display scale of embodiment of the present invention form has reduced antenna packaging volume effectively, saved packing cost and cost of transportation, and very useful to antenna end face layout designs and project installation, and reliability is high, especially band number is more, and effect is more remarkable.
As shown in Figure 5, between rotary drive unit 6 and screw rod 4, transmission device 7 should be set, to reduce the rotating speed of rotary drive unit 6 outputs, this rotating speed be controlled in suitable scope.In the present embodiment, transmission device 7 is comprised of gear, by gear drive, realizes corresponding speed reducing ratio.The output shaft of rotary drive unit 6 is provided with the first gear, screw rod 4 is provided with the second gear, the first gear and the engagement of the second gear form transmission device 7, and the number of teeth of the first gear is less than the number of teeth of the second gear, by controlling the gear ratio of the first gear and the second gear, control rotary drive unit 6 and pass to screw rod 4 rotating speeds, so that this rotating speed is controlled in OK range.
Above-mentioned transmission device 7 is not limited to gear drive, also can be the various deceleration systems such as belt transmissioning mode or chain gear transmission.When geared system is gear drive, be also not limited to the disclosed double reduction mode of above-described embodiment, can be multi-stage gear more.
In order the travel displacement of phase shifter 1 to be changed into angle of declination, be presented at accurately in angle of declination display unit, the transmission device between angle of declination display unit and screw rod 4 should be able to meet corresponding speed reducing ratio requirement, with the accuracy that guarantees that angle of declination shows.In the present embodiment, screw rod 4 is provided with the 3rd gear, and dial 811 is provided with the 4th gear 812, the three gears and the 4th gear 812 meshes to form transmission device, and the number of teeth of the 3rd gear is less than the number of teeth of the 4th gear.By controlling the gear ratio of the 3rd gear and the 4th gear 812, control screw rod 4 and pass to dial 811 rotating speeds, so that this rotating speed is controlled in OK range, guarantee to show correct angle of declination.
Above-mentioned transmission device is not limited to gear drive, also can be the various deceleration systems such as belt transmissioning mode or chain gear transmission.When geared system is gear drive, be also not limited to the disclosed double reduction mode of above-described embodiment, can be multi-stage gear more.
As shown in Figure 4, in order further to optimize the disclosed technical scheme of above-described embodiment, in the present embodiment, needle dial 82 comprises housing and transparent plate 821.Wherein, housing is for realizing and being connected with mount pad.Be arranged at transparent plate 821 on housing for the protection of dial 811, avoided dial 811 to be subject to after the impact of external environment, cannot rotate or rotate insensitive and electric conditioning function.Transparent plate 821 is oppositely arranged with dial 811, transparent plate 821 is provided with pointer 822, and under initial condition, pointer 822 is corresponding with 0 scale on dial 811, after dial 811 rotates, indicate corresponding tilt angled down, the scale of pointer 822 correspondences is tilt angled down.
The housing of needle dial 82 by being connected by screw, is provided with uniformly a plurality of installing holes that pass for screw with mount pad on housing, and installing hole is arranged on the mounting ear of housing outer peripheral face.On the outer peripheral face of housing, be provided with uniformly a plurality of mounting ears, and on each mounting ear, all offer the installing hole passing for screw.
The stability of sliding in order to improve pull bar 2, mount pad is provided with slide 3, and pull bar 2 is slidably matched with slide 3.Slide 3 can be hood type structure, and card fits over the both sides of pull bar 2, pull bar 2 can only be slided along axis direction wherein, and improved the stability that pull bar 2 supports.
Screw rod 4 is provided with sliding bearing 5 near one end of rotary drive unit 6, and this end supports by sliding bearing 5, and the other end supports by pull bar 2 and axial push-pull device at fixed 9.Mount pad is provided with and stops axial push-pull device at fixed 9 to continue mobile limit base, limit base and sliding bearing 5 have been stipulated the stroke range of axial push-pull device at fixed 9, at axial push-pull device at fixed 9, move to respectively while contacting with sliding bearing 5 with limit base, cannot continue to move, then stipulate the stroke range of phase shifter 1.
Axially one end of push-pull device at fixed 9 has the internal thread coordinating with the external screw thread of screw rod 4, and the other end is sleeved on pull bar 2, and is fixed by screws on pull bar 2.
Refer to Fig. 6 and Fig. 7, Fig. 6 is the structural representation that the disclosed angle of declination of the embodiment of the present invention is adjusted to the electrical down-tilting antenna angle of declination adjusting device after minimum; Fig. 7 is the structural representation that the disclosed angle of declination of the embodiment of the present invention is adjusted to the angle of declination display unit after minimum.
811, one of needle dial 82 and dials rotatablely move, static, to indicate by pointer 822 digital calibration, the angle of declination of demonstration phase shifter 1.Axially push-pull device at fixed 9 is when the original position of low order end shown in Fig. 6 (being the position that axial push-pull device at fixed 9 contacts with sliding bearing 5), and pointer 822 is indicated 0 scales, and the angle of declination of phase shifter 1 is 0 degree.
Refer to Fig. 8 and Fig. 9, Fig. 8 is the structural representation of the electrical down-tilting antenna angle of declination adjusting device in the disclosed angle of declination adjustment process of the embodiment of the present invention; Fig. 9 is the structural representation of the angle of declination display unit in the disclosed angle of declination adjustment process of the embodiment of the present invention.
When axially push-pull device at fixed 9 is linearly moved to position shown in Fig. 8, pointer 822 indication 2 scales, the angle of declination of phase shifter 1 is 2 degree.The angle of declination of phase shifter 1 is that the rotary movement by dial 811 changes reading.
Refer to Figure 10 and Figure 11, Figure 10 is the structural representation that the disclosed angle of declination of the embodiment of the present invention is adjusted to the electrical down-tilting antenna angle of declination adjusting device after maximum; Figure 11 is the structural representation that the disclosed angle of declination of the embodiment of the present invention is adjusted to the angle of declination display unit after maximum.
When axially push-pull device at fixed 9 is linearly moved to high order end shown in Figure 10 (position that axially push-pull device at fixed 9 contacts with limit base), pointer 822 indication 8 scales, the angle of declination of phase shifter 1 is 8 degree.The embodiment of the present invention is not limited to the situation that maximum range is 8 degree, also can, by adjusting the distance between limit base and sliding bearing 5, change range ability of the present invention, and change accordingly the meter full scale on dial 811.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the present invention.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. an electrical down-tilting antenna angle of declination adjusting device, is characterized in that, comprising:
Drive unit, realizes the adjustment of electrical down-tilting antenna angle of declination in order to drive at least one phase shifter to move; And
Angle of declination display unit, described angle of declination display unit and described drive unit are of coupled connections, for indicate the changing condition of the angle of declination that described phase shifter produces with the driving of described drive unit by mechanical rotation mode;
Described drive unit specifically comprises:
Rotary drive unit (6);
Be supported in rotationally the screw rod (4) on mount pad, it is connected with described rotary drive unit (6);
Be threaded with described screw rod (4), and along the axially movable axial push-pull device at fixed of described screw rod (4) (9), be connected with pull bar (2) on it, described pull bar (2) is connected with described phase shifter (1);
Described angle of declination display unit is connected by transmission device with described screw rod (4), and stretch in described mount pad outward, it has dial (811) and button is located at the needle dial (82) on described dial (811), described dial (811) is connected with described transmission device with one of described needle dial (82), and another is connected with described mount pad.
2. electrical down-tilting antenna angle of declination adjusting device as claimed in claim 1, it is characterized in that, the output shaft of described rotary drive unit (6) is provided with the first gear, described screw rod (4) is provided with the second gear, described the first gear and described the second gear engagement, and the number of teeth of described the first gear is less than the number of teeth of described the second gear.
3. electrical down-tilting antenna angle of declination adjusting device as claimed in claim 1, it is characterized in that, described screw rod (4) is provided with the 3rd gear, described dial (811) is provided with the 4th gear, described the 3rd gear and described the 4th gear engagement, and the number of teeth of described the 3rd gear is less than the number of teeth of described the 4th gear.
4. electrical down-tilting antenna angle of declination adjusting device as claimed in claim 1, is characterized in that, described needle dial (82) comprising:
The housing being connected with described mount pad;
Be arranged on described housing, and the transparent plate (821) relative with described dial (811), described transparent plate (821) is provided with pointer (822).
5. the electrical down-tilting antenna angle of declination adjusting device as described in claim 1-4 any one, is characterized in that, described mount pad is provided with slide (3), and described pull bar (2) is slidably matched with described slide (3).
6. electrical down-tilting antenna angle of declination adjusting device as claimed in claim 1, is characterized in that, described screw rod (4) is provided with sliding bearing (5) near one end of described rotary drive unit (6), and described sliding bearing (5) is arranged on described mount pad.
7. electrical down-tilting antenna angle of declination adjusting device as claimed in claim 1, is characterized in that, described mount pad is provided with and stops described axial push-pull device at fixed (9) to continue mobile limit base (10).
8. electrical down-tilting antenna angle of declination adjusting device as claimed in claim 1, it is characterized in that, one end of described axial push-pull device at fixed (9) has the internal thread coordinating with the external screw thread of described screw rod (4), it is upper that the other end is sleeved on described pull bar (2), and be fixed by screws on described pull bar (2).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2011/080344 WO2012149779A1 (en) | 2011-09-29 | 2011-09-29 | Downtilt angle adjustment apparatus for electrically down tilt antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102714354A CN102714354A (en) | 2012-10-03 |
| CN102714354B true CN102714354B (en) | 2014-03-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180002261.1A Active CN102714354B (en) | 2011-09-29 | 2011-09-29 | Device for adjusting downtilt angle of electrical downtilt antenna |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102714354B (en) |
| WO (1) | WO2012149779A1 (en) |
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| CN110034401A (en) * | 2019-03-29 | 2019-07-19 | 摩比科技（深圳）有限公司 | The angle of declination display device and antenna of antenna |
| CN112736400B (en) * | 2020-12-30 | 2024-08-13 | 京信通信技术(广州)有限公司 | Down tilt angle display device and antenna |
| CN112788874A (en) * | 2020-12-31 | 2021-05-11 | 京信通信技术(广州)有限公司 | Electrically-tunable antenna downward inclination angle display device and antenna |
| CN113346243B (en) * | 2021-05-12 | 2024-05-28 | 摩比天线技术（深圳）有限公司 | Display device for downward inclination angle of electric tuning antenna and electric tuning antenna |
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| CN101521312A (en) * | 2008-02-29 | 2009-09-02 | 京信通信系统（中国）有限公司 | Antenna phase-shift system |
| CN201673997U (en) * | 2010-04-29 | 2010-12-15 | 佛山市南海微波通讯设备有限公司 | Base station plate type antenna installation clamp code |
| CN201866381U (en) * | 2010-11-30 | 2011-06-15 | 浙江博恩自控阀门有限公司 | Valve electric actuator with indicating device |
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| CN101192707B (en) * | 2007-12-03 | 2011-11-30 | 中国移动通信集团广东有限公司 | Electricity adjusting directional intelligent antenna |
| CN102013546A (en) * | 2010-11-05 | 2011-04-13 | 江苏省东方世纪网络信息有限公司 | Base station antenna |
| CN102104888B (en) * | 2010-12-22 | 2014-06-11 | 罗森伯格（上海）通信技术有限公司 | Control system for electric tuning antenna of base station |
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- 2011-09-29 WO PCT/CN2011/080344 patent/WO2012149779A1/en active Application Filing
- 2011-09-29 CN CN201180002261.1A patent/CN102714354B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101521312A (en) * | 2008-02-29 | 2009-09-02 | 京信通信系统（中国）有限公司 | Antenna phase-shift system |
| CN201673997U (en) * | 2010-04-29 | 2010-12-15 | 佛山市南海微波通讯设备有限公司 | Base station plate type antenna installation clamp code |
| CN201866381U (en) * | 2010-11-30 | 2011-06-15 | 浙江博恩自控阀门有限公司 | Valve electric actuator with indicating device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102714354A (en) | 2012-10-03 |
| WO2012149779A1 (en) | 2012-11-08 |
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