CN2888459Y - Multi-probe near field antenna measurement system with integrated column surface and spherical surface - Google Patents
Multi-probe near field antenna measurement system with integrated column surface and spherical surface Download PDFInfo
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- CN2888459Y CN2888459Y CNU2006200586216U CN200620058621U CN2888459Y CN 2888459 Y CN2888459 Y CN 2888459Y CN U2006200586216 U CNU2006200586216 U CN U2006200586216U CN 200620058621 U CN200620058621 U CN 200620058621U CN 2888459 Y CN2888459 Y CN 2888459Y
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Abstract
The utility model relates to a cylinder-sphere uniting multi-probe near field antenna measurement system, comprising a plurality of antenna detectors connected with the test instrumentation and a controller of the electric property of the computer, as well as a cirque, a rectilinear movement testing jig and a circular motion testing jig. The said antenna detectors are fixed on the inwall of the cirque homogeneously and at the same time projecting into the center of the cirque; said rectilinear movement testing jig is arranged along the symmetry axis of the center of the cirque and at the same time provided with the rectilinear movement parts on the said axis; said circular motion testing jig is fixed on the center of the cirque and at the same time equipped with the circular motion parts on the center of the cirque. The utility model combines the two schemes of the cylinder near field measure and the sphere near field measure together organically to reduce the cost, which is convenient to be used when needed, and makes use of the multi-aerial detectors forms to improve the measure efficiency, so as to make the measure application be more scientific.
Description
[technical field]
The utility model relates to a kind of many probes near field antenna measuring system of cylinder sphere unification.Be applicable to the near field measurement of antenna radiation pattern.
[technical background]
The antenna radiation pattern measurement is the important step in antenna research, design, the manufacture process.Measuring method commonly used has far-field measurement, tightens field measurement and near field measurement.Wherein near field measurement is chosen in usually in the microwave dark room of indoor no echo reflection and carries out.Because the test site that indoor near field measurement needs is less, eliminated radio wave attenuation, the noise jamming of environment simultaneously preferably, and the testing efficiency height, can all weather operations, so its scheme more and more comes into one's own and popularizes.
Near field measurement is broadly divided into three kinds of planar near-field, cylinder near field, sphere near field measurement, realizes the principle of best purposes according to limited cost, and the tested antennas that three kinds of near field measurement schemes are suitable for are had nothing in common with each other.Wherein the planar near-field antenna, the cylinder near field that are only applicable to have high-gain and two-dimentional narrow beam directional diagram is applicable to that the antenna, the sphere near field that have the one dimension narrow beam at least and have middle high-gain directional diagram then are applicable to the antenna with low gain broad beam directional diagram.So, adopt a kind of measurement scheme, in order to contain the measurement of more antenna type, then the volume of test macro may be too huge, involve great expense, and the structure precision of measuring system is difficult to guarantee.
Fig. 1 is a U.S. Pat 6,191, the 744 a kind of prior aries that show: pivoted arm 714 can be done 360 ° (Φ angle) rotation around direction rotating shaft 712, and pivoted arm 718 can be done 360 ° (θ angle) rotation around roll rotating shaft 716.So, the antenna probes 722 of being located at pivoted arm 718 ends can change on whole sphere mobile along θ, Φ in spherical coordinate system, thereby receive and to detect tested antenna 732 and be distributed in Electric Field Distribution on the sphere that surrounds this antenna, the far-field pattern of tested antenna is derived in final inverting.
In the technique scheme, at first, its function is comparatively single, can only realize the function of sphere near field measurement; Secondly, in case tested antenna size is excessive, then the spherical rotation system dimension needs to strengthen, and cost rises greatly, and the corresponding reduction of measuring accuracy, and single simultaneously probe testing efficiency is low.Obviously, this scheme is not suitable for the test of large-size antennae, does not satisfy the needs of the shared near field measurement occasion of cylinder and sphere yet.
In addition, the prior art at the cylinder near field measurement is arranged also in the real world applications, but clearly, regardless of the technical scheme that it adopted, the defective of its simple function can't overcome.
And in many radio field, large scale and undersized antenna have both at the same time, such as, at moving communicating field, its antenna form comprises antenna for base station battle array, smart antenna array, outdoor discharging-directly station antenna battle array, indoor distribution miniature antenna unit.The antenna radiation pattern near field measurement of satisfying the above-mentioned type is two kinds in needs cylinder near field and sphere near field at least.So, the cost of the place of two sets of plan and testing apparatus is expensive.
[summary of the invention]
The purpose of this utility model will overcome above-mentioned the deficiencies in the prior art exactly, and a kind of many probes near field antenna measuring system of cylinder sphere unification is provided.
The purpose of this utility model is achieved by the following technical solution:
Many probes near field antenna measuring system of the utility model cylinder sphere unification, comprise the some antenna probes that electrically connect with test instrumentation and controlling computer, in addition, also comprise annulus, rectilinear motion testing jig and circular motion testing jig, described antenna probes evenly be arranged on the inwall of annulus and projection to the center of annulus, described rectilinear motion testing jig is along circle ring center's axis of symmetry setting and be provided at upward straight-line parts of this axle, and described circular motion testing jig is set at circle ring center and is provided at the parts of this place's circular motion.
Described rectilinear motion testing jig comprises some dielectric support columns, by the railroad of upright supports, and the drive unit that drives this railroad horizontal rectilinear motion.
Described railroad comprises two level frames that are parallel to each other and links at least two poles of described level frame, and the removable medium plate between described level frame, is connected by the medium tooth bar between removable medium plate both sides and two level frames.
Described drive unit comprises main motor, train of reduction gears and transmission gear, and described main motor connects train of reduction gears by its rotor, and this train of reduction gears then meshes with transmission gear, and in addition, transmission gear also is meshed with described medium tooth bar.
Described dielectric-slab one end is provided with connected medium flexible pipe, and tested antenna places on the described dielectric-slab, and is connected to feed cable by feed connection, and described feed cable places in this medium flexible pipe.During test, tested antenna places on the described dielectric-slab, and described tested antenna is connected to feed cable by feed connection, places the interior feed cable of medium flexible pipe can reduce the phase distortion of motion process.
Described dielectric-slab rectilinear motion is in a plurality of discrete positions, best results when especially the distance between each discrete location equates, and at this moment, a plurality of antenna probes receive respectively and measure corresponding electric field, thereby have realized the purpose of cylinder near-field test.
Described circular motion testing jig comprises support column, platform and turntable, and the support column bottom is arranged at the annulus bottom, and top and platform set firmly, and turntable is arranged on this platform.
Place the small-sized frame of joining on this turntable, turntable can be done the 360 ° of rotations in orientation along vertical axis.
The lower surface of this turntable is provided with some register pins, is provided with some pilot holes in the upper surface of platform accordingly, and the two can be dismantled turntable and separate again when realizing mutual location as required.
Described small-sized turntable circular motion is in a plurality of discrete positions, angle, best results when especially the distance between each discrete location equates, and at this moment, a plurality of antenna probes receive respectively and measure corresponding electric field, thereby have realized the purpose of sphere near-field test.
Place the small-sized frame of joining on this turntable, turntable can be done the 360 ° of rotations in orientation along vertical axis.
This main motor and time motor respectively or common and at least one control module electric connection and are realized wired or wireless control by described control module, and for example this control module can electrically connect with controlling computer, also can with controller wireless connections.
Because the cost of measuring system is followed successively by civil engineering, microwave is inhaled ripple darkroom, microwave special test instrument, many probe systems, exercise test frame, control system.So, two cover products of the present utility model (being the exercise test frame) only are set, all the other facilities are compatible without exception, can realize the unification of two measuring systems.
Compared with prior art, advantage of the present utility model is: at first, two kinds of schemes of cylinder near field measurement and sphere near field measurement organically combine and are one, have significantly reduced cost, and are convenient because of the need use; Secondly, utilize many antenna probes form to improve efficiency of measurement, make the application of near field measurement more scientific.
[description of drawings]
Fig. 1 is US6, the principle schematic of 191, No. 744 sphere near field measurements that patent announcement disclosed;
Fig. 2 is a side view of the present utility model, wherein places tested antenna on the removable medium plate;
Fig. 3 is a stereographic map of the present utility model, and its intermediate station and the small-sized frame of joining are not placed, and the removable medium plate is in the left side and is placed with tested antenna;
Fig. 4 is a stereographic map of the present utility model, and wherein the lid of drive unit is removed, and turntable and the small-sized frame of joining are not placed, and the removable medium plate is in the middle part and is placed with tested antenna;
Fig. 5 is a stereographic map of the present utility model, the opposite face of its reflection Fig. 3, and small-sized joining be placed with tested antenna on the frame, the removable medium plate is in a side;
Fig. 6 is the structural representation after drive unit is exaggerated among Fig. 3;
Fig. 7 for drive unit lid among Fig. 6 by the inner structure synoptic diagram after opening.
[embodiment]
Below in conjunction with drawings and Examples the utility model is further described:
Please in conjunction with Fig. 2 to Fig. 5, many probes near field antenna measuring system of the cylinder sphere unification in the utility model scheme, comprise the some antenna probes 20 that electrically connect with test instrumentation (not shown) and controlling computer (not shown), annulus 10, rectilinear motion testing jig 150 and circular motion testing jig 90, described antenna probes 20 evenly be arranged on the inwall of annulus 10 and projection to the center of annulus 10, described rectilinear motion testing jig 150 is along annulus 10 central symmetry axis settings and be provided at upward straight-line parts of this axle, and described circular motion testing jig 90 is set at annulus 10 centers and the parts that are implemented in this place's circular motion are provided.Each antenna probes 20 can transfer to the data in real time that is obtained controlling computer (not shown) and handle for special software after being opposite to tested antenna 130 on annulus 10 centers and testing by test instrumentation (not shown).In addition, annulus 10 inwalls also are provided with absorbing material 11.
The diameter dimension of described annulus 10 depends on tested antenna 30 sizes maximum in the measurement demand, and the number of described antenna probes 20 depends on tested antenna 30 sizes maximum in the measurement demand and the frequency range of test.
See also Fig. 3 and Fig. 4, be the rectilinear motion on the central symmetry axis that rectilinear motion testing jig 150 is realized be provided at annulus 10, the railroad that described rectilinear motion testing jig 150 comprises some dielectric support columns 70, supported by column 70, and the drive unit 200 that drives this railroad horizontal rectilinear motion.
Described railroad comprises two level frames that are parallel to each other 50 and several poles 60 that link and separate described level frame 50, but and the removable medium plate 80 of the conduct parts moving linearly between described level frame 50, article two, 50 of level frames are at a distance of certain distance, are connected by medium tooth bar 155 between removable medium plate 80 both sides and two level frames 50.So, removable medium plate 80 can the central symmetry axis along annulus 10 slidably reciprocate under the clamping of two level frames 50.
See also Fig. 3, Fig. 6 and Fig. 7, described drive unit 200 is by a lid 120 encapsulation, it comprises main motor 130, train of reduction gears 170 and transmission gear 160, described main motor 130 is fixed on the level frame 50, its rotor is connected with train of reduction gears 170,170 of this train of reduction gears are meshed with transmission gear 160 on being arranged on level frame 50, and in addition, transmission gear 160 also is meshed with described medium tooth bar 155.So, provide power by motor, drive transmission gear 160 after slowing down by train of reduction gears 170, transmission gear 160 drives medium tooth bars 155 moving linearlies, and then can drive the rectilinear motion of dielectric-slab 80.
Described dielectric-slab 80 1 ends are provided with the medium flexible pipe 40 of similar chamfering, and during test, tested antenna 30 places on the described dielectric-slab 80, and is connected to feed cable 41 by a feed connection 42, and described feed cable 41 places in this medium flexible pipe 40.So, can be reduced in the phase distortion in the rectilinear motion process, make surveying work more accurate.
By the driving of main motor 130, described dielectric-slab 80 straight lines are movable in a plurality of discrete positions, for reaching better effect, also dielectric-slab 80 can be confined to several uniformly-spaced mobile between the position.So, a plurality of antenna probes 20 receive respectively and measure corresponding electric field, thereby have realized the purpose of cylinder near-field test.
See also Fig. 2 and Fig. 5, described circular motion testing jig 90 comprises support column 91, platform 92 and as the turntable 93 of circular motion parts, support column 91 bottoms are arranged at annulus 10 bottoms, certainly also can make its relative fixed by other known mode, the top then sets firmly with described platform 92, and turntable 93 is arranged on this platform 92.For adapting to the difformity of various tested antennas, should on this turntable 93, place the small-sized frame 100 of joining, tested antenna is placed on this small-sized joining on the frame 100.
Be the function that realizes that sphere is measured, turntable 93 must be done 360 ° in orientation (Φ angle) rotation along vertical axis.For realizing this purpose, these turntable 93 inside comprise an inferior motor (not shown) and transmission gear structure (not shown), finish 360 ° of (Φ angles) rotations in orientation of turntable 93.Be provided with some register pins in the lower surface of turntable 93, be provided with some pilot holes in the upper surface of platform 92 accordingly, turntable 93 and platform 92 can be dismantled turntable 93 and be separated again when realizing mutual location as required.
In like manner,, when not adopting described gearing, also can adopt manual mode certainly, but described small-sized turntable 93 circular motion also can be confined to turntable 93 rotate on several uniformly-spaced positions in a plurality of discrete positions, angle by the driving of inferior motor (not shown).So, a plurality of antenna probes 20 receive respectively and measure corresponding electric field, thereby have realized the purpose of sphere near-field test.
Measuring system of the present utility model is when using, need operate flexibly, that is: when doing the sphere near field measurement, light weight and undersized turntable 93 are placed on the platform 92, and the dielectric-slab 80 of cylinder near field measurement is moved to an end of rectilinear motion testing jig 150; When doing the cylinder near field measurement, light weight and undersized turntable 93 are unloaded, with the without hindrance rectilinear motion of structure that makes things convenient for testing jig 150.
For realizing automatic control, this main motor 130 is all (not shown with a control module with time motor (not shown), electrically connect down together), also can electrically connect with a control module respectively, even can electrically connect with a control module separately, then, can be in conjunction with technique known, by the wired or wireless control of described control module realization to described drive unit 200 and described gearing.
Because the cost of measuring system is followed successively by civil engineering, microwave is inhaled ripple darkroom, microwave special test instrument, many probe systems, exercise test frame.So, the utility model only is provided with two and overlaps independently exercise test frame, and all the other facilities are compatible without exception, promptly realizes the unification of two measuring systems.
The antenna radiation pattern near-field test system that the foregoing description constitutes, that has realized that the cylinder sphere measures unites two into one, and by adopting many probes to improve testing efficiencies, has simple and reliable for structurely, and test performance is good, and the higher ratio of performance to price.Both be applicable to the test of broad beam antenna, be applicable to the test of narrow beam antenna again, can satisfy different application demands.
Claims (12)
1, a kind of many probes near field antenna measuring system of cylinder sphere unification, comprise the some antenna probes (20) that electrically connect with test instrumentation and controlling computer, it is characterized in that: also comprise annulus (10), rectilinear motion testing jig (150) and circular motion testing jig (90), described antenna probes (20) evenly be arranged on the inwall of annulus (10) and projection to the center of annulus (10), described rectilinear motion testing jig (150) is along annulus (10) central symmetry axis setting and be provided at upward straight-line parts of this axle, and described circular motion testing jig (90) is set at annulus (10) center and is provided at the parts of this place's circular motion.
2, many probes near field antenna measuring system of cylinder sphere unification according to claim 1, it is characterized in that: the railroad that described rectilinear motion testing jig (150) comprises some dielectric support columns (70), supported by column (70), and the drive unit (200) that drives this railroad horizontal rectilinear motion.
3, many probes near field antenna measuring system of cylinder sphere unification according to claim 2, it is characterized in that: described railroad comprises two level frames that are parallel to each other (50) and links at least two poles (60) of described level frame (50), and be positioned at removable medium plate (80) between the described level frame (50), be connected by medium tooth bar (155) between removable medium plate (80) both sides and two level frames (50).
4, many probes near field antenna measuring system of cylinder sphere unification according to claim 3, it is characterized in that: described drive unit (200) comprises main motor (130), train of reduction gears (170) and transmission gear (160), described main motor (130) connects train of reduction gears (170) by its rotor, this train of reduction gears (170) then meshes with transmission gear (160), in addition, transmission gear (160) also is meshed with described medium tooth bar (155).
5, many probes near field antenna measuring system of cylinder sphere unification according to claim 4, it is characterized in that: described dielectric-slab (80) one ends are provided with medium flexible pipe (40), place the usefulness of ccontaining feed cable (41) when connecting feed cable (41) on the described dielectric-slab (80) for tested antenna (30).
6, many probes near field antenna measuring system of cylinder sphere unification according to claim 5, it is characterized in that: described dielectric-slab (80) rectilinear motion is in a plurality of discrete positions.
7, according to any many probes near field antenna measuring system that described cylinder sphere is unified in the claim 1 to 6, it is characterized in that: described circular motion testing jig (90) comprises support column (91), platform (92) and turntable (93), support column (91) bottom is arranged at annulus (10) bottom, top and platform (92) set firmly, and turntable (93) is arranged on this platform (92).
8, many probes near field antenna measuring system of cylinder sphere unification according to claim 7 is characterized in that: this turntable (93) is gone up and is placed the small-sized frame (100) of joining, and turntable (93) can be done the 360 ° of rotations in orientation along vertical axis.
9, many probes near field antenna measuring system of cylinder sphere unification according to claim 8, it is characterized in that: be provided with some register pins in turntable (93) lower surface, be provided with some pilot holes in platform (92) upper surface accordingly, the two is when realizing mutual location.
10, according to Claim 8 or many probes near field antenna measuring system of 9 described cylinder spheres unification, it is characterized in that: described small-sized turntable (93) circular motion is in a plurality of discrete positions, angle.
11, many probes near field antenna measuring system of cylinder sphere unification according to claim 10 is characterized in that: this turntable (93) is gone up and is placed the small-sized frame (100) of joining, and turntable (93) can be done the 360 ° of rotations in orientation along vertical axis.
12, many probes near field antenna measuring system of cylinder sphere unification according to claim 9, it is characterized in that: this main motor (130) and time motor respectively or common and at least one control module electric connection and are realized wired or wireless control by described control module.
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2006200586216U CN2888459Y (en) | 2006-05-08 | 2006-05-08 | Multi-probe near field antenna measurement system with integrated column surface and spherical surface |
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| CNU2006200586216U CN2888459Y (en) | 2006-05-08 | 2006-05-08 | Multi-probe near field antenna measurement system with integrated column surface and spherical surface |
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| CN106768766A (en) * | 2017-02-22 | 2017-05-31 | 深圳市众恒世讯科技股份有限公司 | Antenna vibration-testing platform |
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| WO2018218794A1 (en) * | 2017-06-03 | 2018-12-06 | 陈奕铭 | Antenna measurement system |
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| CN107121600A (en) * | 2017-06-07 | 2017-09-01 | 中国工程物理研究院应用电子学研究所 | A kind of automatic testing equipment for testing aerial radiation field uniformity |
| CN108254629A (en) * | 2017-12-15 | 2018-07-06 | 北京无线电计量测试研究所 | A kind of antenna efficiency measuring device |
| CN110687359A (en) * | 2018-07-06 | 2020-01-14 | 深圳市新益技术有限公司 | Automatic change antenna and measure revolving stage |
| CN110412360A (en) * | 2019-07-02 | 2019-11-05 | 深圳市新益技术有限公司 | Shrunk type vehicle antenna radio-frequency performance test macro |
| CN113253170B (en) * | 2020-02-13 | 2023-08-25 | 西门子(深圳)磁共振有限公司 | Field measuring device of magnetic resonance imaging device |
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