CN206178127U - Accurate running gear and calbiration system of antenna / field probe extrapolation calibration usefulness - Google Patents
Accurate running gear and calbiration system of antenna / field probe extrapolation calibration usefulness Download PDFInfo
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- CN206178127U CN206178127U CN201621230586.1U CN201621230586U CN206178127U CN 206178127 U CN206178127 U CN 206178127U CN 201621230586 U CN201621230586 U CN 201621230586U CN 206178127 U CN206178127 U CN 206178127U
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- antenna
- running gear
- field probe
- calibration
- extrapolation
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Abstract
The utility model provides an accurate running gear and calbiration system of antenna / field probe extrapolation calibration usefulness, wherein accurate running gear includes the guide rail, sets up the running gear on the guide rail and is used for driving the actuating mechanism of running gear along rail movements, running gear's upper portion is fixed with the speculum that is used for the calibration. The calbiration system includes the accurate running gear of antenna / the field probe extrapolation calibration usefulness of above -mentioned structure, and antenna / probe is still surveyed including the quilt of fixing on the bracing piece to this calbiration system to and fix on emit antenna with accurate running gear complex dual -frenquency laser interferometer, the speculum among this dual -frenquency laser interferometer and the accurate running gear sets up relatively. The utility model discloses satisfied the antenna and a demand that the probe adopted the extrapolation to calibrate of high accuracy, not only simple structure is compact, and is reliable stable, still has characteristics easy and simple to handle, accurate high, can extensively be applicable to the occasions such as calibration, test of microwave antenna and microwave field probe.
Description
Technical field
The utility model is related to the collimation technique of antenna/Field probe, more particularly to a kind of antenna/Field probe extrapolation calibration
Accurate running gear and calibration system.
Background technology
The calibration of microwave antenna gain/coefficient and the microwave field probe calibration factor is usually what is carried out in microwave dark room,
Because Absorbing Materials Used in Microwave Anechoic Chamber is not ideal enough, there is metope transmitting, back wave synthesizes with direct wave so that the test space is formed
Standing wave, this is not preferable uniform plane wave, and the field intensity of receiving point will be different from theoretical field intensity, missed so as to can bring about place
Difference.
In addition, antenna calibration and Field probe calibration be to be carried out in the near field of limited distance (1~3) m, using approximate formula,
Coupled between antenna, near field measurement error can be introduced.Recent studies have shown that, site error can be greatly reduced using extrapolation
With near field measurement error.
In extrapolation measurement, it is necessary to record receiving point field intensity Ei (using reception antenna or Field probe) and transmitting antenna with
One group of data apart from di between reception antenna (or Field probe), trend extropolation is carried out according to the data obtained, obtains unreflected
Far-field results.In extrapolation, if wanting to obtain preferable calibration data, it is necessary to accurate precision running gear, this is to use
Extrapolation realizes the accurate calibration of the antenna/Field probe technical problem to be solved.
Utility model content
The purpose of this utility model is to provide accurate running gear and the school of a kind of antenna/Field probe extrapolation calibration
Barebone, the utility model compact conformation, the characteristics of easy to use high with calibration accuracy.
The utility model is achieved like this, a kind of accurate running gear of antenna/Field probe extrapolation calibration, its
It is characterised by, it includes guide rail, the walking mechanism being arranged on guide rail and the drive for driving walking mechanism to move along the rail
Motivation structure；The top of the walking mechanism is fixed with the speculum for calibrating.
The guide rail include two straight tracks and be connected to track two ends for keep two tracks it is contour
Connecting plate.
The drive mechanism includes stepper motor, Pulley shaft and the skin being connected between stepper motor and Pulley shaft
Band；The stepper motor and Pulley shaft are separately positioned on the connecting plate at track two ends.
The walking mechanism includes support frame, is fixed on the support bar on support frame top and is arranged on support frame lower end
Four rollers coordinated with track；The speculum is fixed on support bar；The bottom of support frame as described above is additionally provided with for even
The geometrical clamp of lace.
Preferably：The cross section of the guide rail is V-shaped structure；The belt is toothed timing belt.
The utility model also describes a kind of antenna/Field probe extrapolation calibration system, it is characterised in that it includes above-mentioned
The accurate running gear of the antenna of structure/Field probe extrapolation calibration, the calibration system also includes being fixed on support bar
Tested antenna/probe, and it is fixed on the two-frequency laser interferometer coordinated with accurate running gear on transmitting antenna, the double frequency
Laser interferometer is oppositely arranged with the speculum in accurate running gear.
The beneficial effects of the utility model are：The utility model meets high-precision antenna and Field probe uses extrapolation
The demand of calibration, be not only simple in structure it is compact, it is reliable and stable, also with it is easy to operate, accurate high the features such as；It is widely portable to
The occasions such as calibration, the test of microwave antenna and microwave Field probe.
Brief description of the drawings
Fig. 1 is the structural front view of the utility model precision running gear one embodiment.
Fig. 2 is the structure top view of embodiment illustrated in fig. 1.
Fig. 3 is the structural side view of embodiment illustrated in fig. 1.
Fig. 4 is the attachment structure front view of the utility model guide rail and drive mechanism.
Fig. 5 is the attachment structure side view shown in Fig. 4.
Fig. 6 is the structural front view of the utility model walking mechanism one embodiment.
Fig. 7 is the structure upward view of embodiment illustrated in fig. 6.
Fig. 8 is the structural side view of embodiment illustrated in fig. 6.
Specific embodiment
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings.
The utility model is achieved in that as Figure 1-3 the accurate running gear includes guide rail 1, is arranged on guide rail
Walking mechanism 2 on 1 and the drive mechanism 3 for driving walking mechanism 2 to be moved along guide rail 1；The top of the walking mechanism 2
It is fixed with the speculum 4 for calibrating；The utility model drives walking mechanism 2 to be moved along guide rail 1 using drive mechanism 3, from
And driving the speculum 4 in walking mechanism 2 to move, such guide rail 1 can realize good grazing and contour, so as to ensure
Speculum 4 is walked along the track precision of setting.
For the convenience for improving reliability of structure He install and use, the utility model to accurate running gear each
Implementing structure has carried out structure design, and the structure of its middle guide 1 is as shown in figure 4, it includes two straight tracks 101 and divides
Be not connected to the two ends of track 101 for keep the contour connecting plate 102 of two tracks 101；The structure of the drive mechanism 3 such as Fig. 5
Shown, it includes stepper motor 301, Pulley shaft 302 and the skin being connected between stepper motor 301 and Pulley shaft 302
Band 303；The stepper motor 301 and Pulley shaft 302 are separately positioned on the connecting plate 102 at the two ends of track 101；Specific real
What Shi Shi, guide rail 1 and drive mechanism 3 were connected together, guide rail 1 includes two high-precision orbitals 101 and two pieces of connecting plates
102, its middle orbit 101 has high linearity, for supporting walking mechanism, is installed on straight firm ground, two
Block connecting plate 102 is used to fix two tracks 101, it is ensured that two contours of track；Two pieces of connecting plates 102 install stepper motor
301 and Pulley shaft 302, the belt by the drive connection of stepper motor 301 between stepper motor 301 and Pulley shaft 302
303.In specific implementation, the linearity of track 101 and the quality of contour directly affect the precision of measurement result, in order to improve
The reliability of track, the cross section of track 101 can use but be not limited to V-shaped structure.
The utility model has also carried out structure design to the structure of walking mechanism 2, its specific implementation structure such as Fig. 6-8 institute
Show, it include support frame 201, be fixed on the top of support frame 201 support bar 202 and be arranged on the four of the lower end of support frame 201
The individual roller 203 coordinated with track 101；The speculum 4 is fixed on support bar 202；The bottom of support frame as described above 201 also sets
It is equipped with the geometrical clamp 204 for connecting belt 303；When implementing, 4 high accuracy rollers 203 are positioned on track 101, can
Walked along track 101；Support frame 201 is firm with 4 high accuracy rollers 203 to be connected；Because support frame 201 passes through geometrical clamp 204
Belt 303 is connected to, when stepper motor 301 is rotated, support frame 201 will be as belt 303 be along the steady straight line of track 101
Motion, and speculum 4 will steadily move along a straight line with support frame 201；When implementing, 4 circularity of high accuracy roller 203 and
Concentricity quality directly affects the precision of measurement result.4 high accuracy wheels can be used but be not limited to handstand V-shaped wheel, it with
Precise Orbit 101 is used cooperatively.Simultaneously in order to improve the precision for using, the belt 303 can use toothed timing belt.
The utility model also describes a kind of antenna/Field probe extrapolation calibration system, and its antenna including said structure/
The accurate running gear of Field probe extrapolation calibration, the calibration system also include being fixed on tested antenna on support bar 202/
Probe, and it is fixed on the two-frequency laser interferometer coordinated with accurate running gear on transmitting antenna, the double-frequency laser interference
Instrument is oppositely arranged with the speculum 4 in accurate running gear.The Two bors d's oeuveres laser interferometer is used for the shift length of measuring mechanism,
It is a kind of experiment common instrument, it is by calculating Laser emission to returning to the time of the machine from speculum come measurement distance；This reality
The principle worked with the new calibration system is such, with the movement of walking mechanism 2, the quilt in walking mechanism 2
Survey antenna/probe and speculum 4 moved together along guide rail 1, the reflected mirror 4 of the laser that two-frequency laser interferometer sends is returned,
Both distances can be measured, due on two-frequency laser interferometer FRPA-Fixed Radiation Pattern Antenna, therefore obtain transmitting antenna with by observation
The distance of line/probe；In antenna/Field strength calibration, meeting far field condition is, the field intensity E following formula tables at range transmission antenna d
Show：
In formula, E, the field intensity of receiving point, V/m；
D, the distance of dual-mode antenna, m；
P, the transmission power of feed-in transmitting antenna, W；
G, the gain of transmitting antenna；
If setting E '=E/d, above formula becomes：
E ' be referred to as normalize field intensity, unit is V, it with apart from unrelated.When feed-in power P is constant, transmitter antenna gain (dBi) g is adopted
Also should be to determine with far gain value, so E ' should be the value for determining.Therefore the E for being measured under different distancei' value should
It is identical, if different, then it is assumed that be that site error and near field measurement error are introduced, can subtract through trend extrapolation
Few these errors.Tested by correcting, measurement result of the uncertainty better than 0.2dB, and its range measurement can be obtained
It is accurate to 0.2 millimeter of rank.
Claims (7)
1. the accurate running gear of a kind of antenna/Field probe extrapolation calibration, it is characterised in that it includes guide rail (1), sets
Walking mechanism (2) on guide rail (1) and the drive mechanism (3) for driving walking mechanism (2) to be moved along guide rail (1)；Institute
State walking mechanism (2) top be fixed with for calibrate speculum (4).
2. the accurate running gear of antenna as claimed in claim 1/Field probe extrapolation calibration, it is characterised in that described
Guide rail (1) including two straight tracks (101) and be connected to track (101) two ends for keep two tracks (101)
Contour connecting plate (102).
3. the accurate running gear of antenna as claimed in claim 2/Field probe extrapolation calibration, it is characterised in that described
Drive mechanism (3) is including stepper motor (301), Pulley shaft (302) and is connected to stepper motor (301) and Pulley shaft
(302) belt (303) between；
The stepper motor (301) and Pulley shaft (302) are separately positioned on the connecting plate (102) at track (101) two ends.
4. the accurate running gear of antenna as claimed in claim 3/Field probe extrapolation calibration, it is characterised in that described
Walking mechanism (2) including support frame (201), be fixed on the support bar (202) on support frame (201) top and be arranged on support frame
(201) roller (203) that four of lower end coordinate with track (101)；
The speculum (4) is fixed on support bar (202)；The bottom of support frame as described above (201) is additionally provided with for connecting skin
The geometrical clamp (204) of band (303).
5. the accurate running gear of the antenna as described in claim 3 or 4/Field probe extrapolation calibration, it is characterised in that institute
The cross section for stating guide rail (1) is V-shaped structure.
6. the accurate running gear of antenna as claimed in claim 5/Field probe extrapolation calibration, it is characterised in that described
Belt (303) is toothed timing belt.
7. a kind of antenna/Field probe extrapolation calibration system, it is characterised in that it includes that the antenna/field described in claim 6 is visited
The accurate running gear of head extrapolation calibration, the calibration system also includes the tested antenna/spy being fixed on support bar (202)
Head, and it is fixed on the two-frequency laser interferometer coordinated with accurate running gear on transmitting antenna, the two-frequency laser interferometer
It is oppositely arranged with the speculum (4) in accurate running gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621230586.1U CN206178127U (en) | 2016-11-16 | 2016-11-16 | Accurate running gear and calbiration system of antenna / field probe extrapolation calibration usefulness |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621230586.1U CN206178127U (en) | 2016-11-16 | 2016-11-16 | Accurate running gear and calbiration system of antenna / field probe extrapolation calibration usefulness |
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| Publication Number | Publication Date |
|---|---|
| CN206178127U true CN206178127U (en) | 2017-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621230586.1U Active CN206178127U (en) | 2016-11-16 | 2016-11-16 | Accurate running gear and calbiration system of antenna / field probe extrapolation calibration usefulness |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353709A (en) * | 2016-11-16 | 2017-01-25 | 广州赛宝计量检测中心服务有限公司 | Precise walking device for extrapolation method correction of antenna/field probe and correcting system |
| CN109738785A (en) * | 2018-12-24 | 2019-05-10 | 贵州航天计量测试技术研究所 | A kind of device and method for microwave chip detection calibration |
| CN113579770A (en) * | 2021-08-04 | 2021-11-02 | 洛阳航准精密制造有限公司 | Multifunctional large-scale external preset loading and unloading platform |
-
2016
- 2016-11-16 CN CN201621230586.1U patent/CN206178127U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353709A (en) * | 2016-11-16 | 2017-01-25 | 广州赛宝计量检测中心服务有限公司 | Precise walking device for extrapolation method correction of antenna/field probe and correcting system |
| CN109738785A (en) * | 2018-12-24 | 2019-05-10 | 贵州航天计量测试技术研究所 | A kind of device and method for microwave chip detection calibration |
| CN113579770A (en) * | 2021-08-04 | 2021-11-02 | 洛阳航准精密制造有限公司 | Multifunctional large-scale external preset loading and unloading platform |
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