CN208350680U - A kind of near field electromagnetic wave measuring system - Google Patents
A kind of near field electromagnetic wave measuring system Download PDFInfo
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- CN208350680U CN208350680U CN201821068960.1U CN201821068960U CN208350680U CN 208350680 U CN208350680 U CN 208350680U CN 201821068960 U CN201821068960 U CN 201821068960U CN 208350680 U CN208350680 U CN 208350680U
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Abstract
The utility model discloses a kind of near field electromagnetic wave measuring system, two-dimensional surface mobile system, host computer, vector network analyzer, lifting platform, level(l)ing device, near-field measurement probes；Host computer is connected with vector network analyzer, and the input terminal of vector network analyzer is connected with near-field measurement probe, and output end is connected with sample, and sample is placed on level(l)ing device；Level(l)ing device is fixed on lifting platform；Lifting platform is fixed on two-dimensional plane coordinate mobile system；Near-field measurement probe is fixed on sample upper space.The utility model can be not only used for the measurement of waveguide (resonant cavity, photonic crystal, negative refractive index material etc.) sample, it can be used for the measurement of the antenna sample in open environment again, convenient adjustment member component is only needed to realize, can be with the excessively high problem of effective solution experimental cost, while the measurement for various samples can also effectively save experimental period and space.
Description
Background technique
The utility model belongs to microwave near-field field of measuring technique, and in particular to a kind of near field electromagnetic wave measuring system background
Technology
Microwave near-field measuring technique is low to environmental requirement, does not need the dark room conditions to involve great expense, does not also need to radio frequency
System has very high requirement, and the requirement to equipment is lower, and near field measurement does scanning motion by the surface to sample, acquires sample
Then the data of near-field region radiation field release far field data by computer Near-field Data by near field Far-Zone Field Transformation.As long as
Guarantee that measurement accuracy can obtain accurate far-field characteristic.
Existing technical solution is different sample and needs to select different measuring device and method, could scanning survey sample
The amplitude and phase of the electromagnetic wave in product near field obtain the distribution map of electromagnetic wave.
For waveguide (resonant cavity, photonic crystal, negative refractive index material) sample measurement be the need for one it is relatively closed
Electromagnetic beam is tied in space by space；This just needs a set of for waveguide (resonant cavity, photonic crystal, negative refractive index material)
Measuring system and method.
Measurement to antenna is exactly an opening space measurement, it is necessary to replace another kind of unbonded measuring system
And method.The detection mode of such test macro itself is relatively simple, limitation is big.Different surveys is equipped with for different samples
Amount system will increase fund cost, and do needed when two different measurements laboratory technician to two sets of different measuring systems into
Row debugging and setting increase the working time, and two different test macros and method will also result in tying up for lab space.
Summary of the invention
The purpose of the utility model is to overcome the defects of prior art, in order to solve the problems, such as having a single function for measuring system,
It is proposed a kind of near field electromagnetic wave measuring system.
The near field electromagnetic wave measuring system of the utility model includes: two-dimensional surface mobile system, host computer, vector network point
Analyzer, lifting platform, level(l)ing device, near-field measurement probe；Host computer is connected with vector network analyzer, vector network analysis
The input terminal of instrument is connected by RF connection with near-field measurement probe, and the output end of vector network analyzer is connected by radio frequency
Line is connected with sample, and sample is placed on level(l)ing device；Level(l)ing device is fixed on lifting platform；Lifting platform is fixed on
On two-dimensional plane coordinate mobile system；Near-field measurement probe is fixed on sample upper space；The two-dimensional surface mobile system
Drive lifting platform in the movement of X-axis and Y direction by PC control, lifting platform is used to adjust the height of level(l)ing device
Degree.
As a preferred embodiment of the present invention, the near field electromagnetic wave measuring system further includes detachable upper plate beam
Wave apparatus；Two-dimensional surface mobile system, lifting platform and level(l)ing device are arranged at the detachable upper plate beam wave apparatus
It is interior；Detachable upper plate beam wave apparatus includes upper plate, frame；The upper plate is metal plate；The sample is located at upper plate and level
Between regulating device.For frame preferably with nonmetallic, nonmetallic baffle is can be used in four side walls of frame, can also not keep off
Plate, but cannot absolutely want metal baffle.
As a preferred embodiment of the present invention, the upper plate intermediate region offers detection mouth, near-field measurement probe
By being clamped and fastened on sample upper space after the detection mouth on detachable upper plate beam wave apparatus；Or near-field measurement probe
It is clamped and fixed in detection mouth, probe syringe needle is parallel with upper plate lower surface.
As a preferred embodiment of the present invention, the near field electromagnetic wave measuring system further includes detachable probe clip
Hold device；Near-field measurement probe is clamped and fastened on sample upper space, detachable spy by detachable probe clamping device
Head clamping device is non-metallic material.
As a preferred embodiment of the present invention, the detachable probe clamping device includes pedestal fixed block, light
Axis, support rail, T-type connection sliding block, cable line card；Pedestal fixed block is fixedly connected with the pedestal of two-dimensional surface mobile system,
Pedestal fixed block is connect with optical axis, and optical axis is connected with support rail by T-type connection sliding block, and near-field measurement probe passes through cable wire
Card is clamped on support rail.
As a preferred embodiment of the present invention, the near field electromagnetic wave measuring system further includes detachable probe clip
Hold device and detachable upper plate beam wave apparatus；Detachable upper plate beam wave apparatus detachably connects with two-dimensional surface mobile system
It connects；Detachable upper plate beam wave apparatus includes upper plate, frame；Upper plate is metal plate；Sample is located at upper plate and level(l)ing device
Between；Two-dimensional surface mobile system, lifting platform, level(l)ing device and detachable probe clamping device are arranged at the frame
In frame；Upper plate intermediate region offers detection mouth；Detachable probe clamping device is non-metallic material；Detachable probe clip
Holding device includes optical axis, T-type connection sliding block and support rail；Optical axis is fixedly connected with two-dimensional surface mobile system, optical axis and branch
Cross bar is supportted to be connected by T-type connection sliding block；Support rail is located at sample upper area and is equipped with for clamping near-field measurement probe
Clip；Near-field measurement probe is clamped on support rail or is clamped in detection mouth.
As a preferred embodiment of the present invention, the two-dimensional surface mobile system includes the first single armed straight line machine
People, the second single armed linear robot, equipment base, linear guides；The first single armed linear robot and the second single-arm straight
Line machine includes servo controller, sliding rail and sliding block per capita；Servo controller control sliding block moves along a straight line on the slide rail；Line
Property guide rail and the first single armed linear robot are arranged on the equipment base, linear guides and the first single armed linear robot
Sliding rail be set in parallel, and the two height it is equal, one end of the second single armed linear robot is fixed on first single-arm straight
On the sliding block of line robot, the other end is slidably mounted on linear guides, the sliding rail of the second single armed linear robot
With the perpendicular installation of linear guides；Lifting platform is fixed on the sliding block of the second single armed linear robot.
As a preferred embodiment of the present invention, if the level(l)ing device include lower plate, support limit plate and
Dry Level tune part；The support limit plate upper surface is equipped with recessed portion identical with lower writing board shape, the recessed portion
For installing lower plate；Level tune part is fixed on support limit plate, and lower flat plate bottom is by several Level tune parts
It is supported.
As a preferred embodiment of the present invention, the lower plate offers string holes, the recess of the support limit plate
Wire casing is equipped in portion；The coaxial line of the output end of the vector network analyzer after wire casing and string holes with sample by being connected.
This test macro is modular design, and the utility model can be not only used for waveguide (resonant cavity, photonic crystal, negative folding
Penetrate material etc.) sample measurement, and can be used for the measurement of open antenna sample, it is only necessary to convenient adjustment member component, that is, cough
Cough realization, can be with the excessively high problem of effective solution experimental cost, while the measurement for various samples can also be saved effectively
Experimental period and space.
Detailed description of the invention
Fig. 1 is one waveguide measurement figure of the utility model embodiment；
Fig. 2 is the open antenna measurement figure of the utility model embodiment two；
Fig. 3 is the structural schematic diagram of the two-dimensional surface mobile system of the utility model；
Fig. 4 is the structural schematic diagram of the level(l)ing device of the utility model；
Fig. 5 is the structural schematic diagram of the detachable probe clamping device of the utility model；
Fig. 6 is the structural schematic diagram of the detachable upper plate beam wave apparatus of the utility model.
Specific embodiment
The utility model is described further with reference to the accompanying drawings and examples.
As shown in Figure 1, the near field electromagnetic wave measuring system of the utility model include: two-dimensional surface mobile system 1, it is upper
Machine, vector network analyzer, lifting platform 2, level(l)ing device 3, near-field measurement probe；Host computer and vector network analyzer phase
Even, the input terminal of vector network analyzer is connected by RF connection with near-field measurement probe, vector network analyzer it is defeated
Outlet is connected by RF connection with sample, and sample is placed on level(l)ing device 3；Level(l)ing device 3 is fixed on liter
It drops on platform 2；Lifting platform 2 is fixed on 1 on two-dimensional plane coordinate mobile system；Near-field measurement probe is fixed on sample upper space；
The two-dimensional surface mobile system 1 drives lifting platform mobile in X-axis and Y direction by PC control, and lifting platform is used for
Adjust the height of level(l)ing device.Sample is placed in above level(l)ing device, is then issued instructions to by host computer
Vector network analyzer and servo motion controller, servo motion controller control two one armed robots, one armed robot with
Dynamic lifting platform, level(l)ing device and sample do equidistant regular automatically scanning, move to each coordinate points of setting
Data acquisition is done, to complete the data collection task of sample surfaces electromagnetic wave amplitude and phase.Servo motion control in whole system
Device processed and one armed robot, which cooperate, makes to test the repetitive positioning accuracy that probe reaches ± 0.01mm, in sweep test, leads to
The setting for crossing host computer allows measuring system to be automatically performed scanning, obtains the field strength point for accurately measuring very much the electromagnetic wave of sample surfaces
Cloth and field strength size.Simultaneously a set of measuring system using different mount schemes can real different samples measurement, greatly save
Fund cost, experimental period and space.
Embodiment 1
It as shown in figs. 1 and 6, in the present embodiment, mainly include the mobile system of two-dimensional surface for near-field microwave measuring system
System 1, host computer, vector network analyzer, lifting platform 2, level(l)ing device 3, near-field measurement probe and detachable upper plate beam
Wave apparatus 4,
Detachable upper plate beam wave apparatus 4 includes upper plate 42, frame 41；The upper plate is metal plate；The sample is located at
Between upper plate and level(l)ing device.For frame preferably with nonmetallic, nonmetallic baffle is can be used in four side walls of frame,
Can should not baffle, but metal baffle cannot be used.
As shown in fig. 6,42 intermediate region of upper plate offers detection mouth 44, near-field measurement probe passes through detachable
Sample upper space is clamped and fastened on by line card 43 after detection mouth 44 on upper plate beam wave apparatus；Or near-field measurement probe is pressed from both sides
It holds and is fixed in detection mouth, probe syringe needle is parallel with upper plate lower surface.
As shown in figure 3, the two-dimensional surface mobile system 1 includes the first single armed linear robot 13, the second single-arm straight
Line robot 14, equipment base 11, linear guides 12；The first single armed linear robot and the second single armed linear robot
It include servo controller 141, sliding rail 142 and sliding block 143；Servo controller 141 controls sliding block 143 and carries out on sliding rail 142
Linear motion；Linear guides 12 and the first single armed linear robot 13 are arranged on the equipment base, linear guides and
The sliding rail of one single armed linear robot is set in parallel, and the two height is equal, and one end of the second single armed linear robot 14 is solid
It is scheduled on the sliding block of the first single armed linear robot, the other end is slidably mounted on linear guides, and second is single
The sliding rail of arm linear robot and the perpendicular installation of linear guides；Lifting platform is fixed on the sliding block of the second single armed linear robot
On.The movement of lifting platform in the horizontal plane can be realized by the driving of two servo controllers.
As shown in figure 4, the level(l)ing device 3 includes lower plate 32, support limit plate 31, several Level tune parts
33 and cable line card 34；The support limit plate upper surface is equipped with recessed portion identical with lower writing board shape, the recess
Portion is for installing lower plate；Level tune part is fixed on support limit plate, and lower flat plate bottom is by several Level tunes
Part is supported.Cable line card 34 is for installing and fixing coaxial line.The Level tune part of the present embodiment is to adjust bolt, totally 4
It is a, four corners of support limit plate are distributed in, the mode manually or electrically controlled to adjust adjusts the height at each angle of lower plate
Degree, can be suitably used for the requirement for needing lower platen parallel state.
When to needing to fetter the measurement such as field sample such as waveguide, resonant cavity, photonic crystal, negative refractive index material, this can be used
The constructional device of embodiment, level(l)ing device and detachable upper plate beam wave apparatus are parallel to each other, constitute a closed wave
Sample is placed in above level(l)ing device by guide structure, and closed waveguiding structure can be by the unified orderly constraint of electromagnetic wave
In parallel space, vector network analyzer and servo control are then issued instructions to by the host computer inside computer
Device, servo motion controller control two one armed robots, and one armed robot drives lifting platform, level(l)ing device and sample to do
Equidistant regular automatically scanning, each coordinate points for moving to setting do data acquisition, to complete the wave of our needs
Lead the data collection task of the amplitude and phase on surface.Specific embodiment described herein only to explain the utility model,
It is not used to limit the utility model.
Embodiment 2
As shown in Figure 2 and Figure 5, embodiment 2 with detachable probe clamping device 5 the difference from embodiment 1 is that replaced
Detachable upper plate beam wave apparatus 4 in embodiment 1.Near-field measurement probe is gripped by detachable probe clamping device
In sample upper space, detachable probe clamping device is non-metallic material.
The detachable probe clamping device 5 includes pedestal fixed block 51, optical axis 52, support rail 54, T-type connection
Sliding block 53, cable line card 55；Pedestal fixed block is fixedly connected with the pedestal of two-dimensional surface mobile system, pedestal fixed block and optical axis
Connection, optical axis are connected with support rail by T-type connection sliding block, and near-field measurement probe is clamped to support by cable wire card
On cross bar.
When to open antenna sample measurement, the constructional device of embodiment 2, the support rail 54 in device can be used
It is non-metallic material with cable line card 55, there can be smaller reflectivity in electromagnetic field, caused result can be very
Good inhibition receives the influence of data to measuring probe, guarantees the precision of measurement data, and antenna sample is placed in Level tune dress
It sets above and is connected with the output end of vector network analyzer, measuring probe is connected with the input terminal of vector network analyzer,
Then measuring probe is referred to by being fixed after the cable line card on support rail by line card by the host computer sending inside computer
It enables to vector network analyzer and servo motion controller, servo motion controller controls two one armed robots, single armed machine
People drives lifting platform, level(l)ing device and sample to do equidistant regular automatically scanning, moves to each seat of setting
Punctuate does data acquisition, come complete we needs antenna surface electromagnetic wave amplitude and phase data collection task.Because
Antenna can emit a free electromagnetic field, without metal object in magnetic field, can come to avoid the back wave of metal to electromagnetism
The interference of field, the data accuracy obtained are higher.Specific embodiment described herein is only to explain the utility model, not
For limiting the utility model.
Embodiment 3
It in the present embodiment, include simultaneously detachable upper plate beam wave apparatus 4 and removable for near-field microwave measuring system
Formula probe clamping device 5 is unloaded, detachable probe clamping device is connected with the pedestal of two-dimensional surface mobile system；On detachable
The frame bottom end of plate beam wave apparatus is installed by pulley；Measuring probe is surveyed by being fixed after the cable line card on support rail by line card
Where height where the height of amount probe is located at upper plate and lower plate between height.
The structure of detachable upper plate beam wave apparatus 4 and detachable probe clamping device 5 can be respectively such as Examples 1 and 22
In shown in corresponding modular construction.
When carrying out open field measurement, detachable upper plate beam wave apparatus is removed into measured zone；
When carrying out constraint field measurement, detachable upper plate beam wave apparatus is moved into measured zone, sample is made to be located at upper plate
Between level(l)ing device, upper plate plays the role of beam wave.
The two sides of base of two-dimensional surface mobile system may also set up the sliding rail for pulley rolling.
In concrete application the utility model, when carrying out constraint field measurement, detachable upper plate beam wave apparatus is selected, it will
The pedestal of detachable upper plate beam wave apparatus and two-dimensional plane coordinate mobile system is mutually fixed, two-dimensional surface mobile system, lifting
Platform, level(l)ing device and sample are arranged inside detachable upper plate beam wave apparatus；Near-field measurement probe passes through detachable
Detection mouth on formula upper plate beam wave apparatus enters inside measuring system and is clamped and fastened on above sample；
When carrying out open field measurement, detachable probe clamping device is selected；Detachable probe clamping device and two
The pedestal of dimensional plane coordinate mobile system is mutually fixed, and near-field measurement probe is clamped and fastened on by detachable probe clamping device
Above sample, detachable probe clamping device is non-metallic material；
After selecting according to measurement demand and install device, sample is placed in above level(l)ing device, is then passed through
Host computer issues instructions to vector network analyzer and servo motion controller, and servo motion controller controls two single armed machines
People, one armed robot drive lifting platform, level(l)ing device and sample to do equidistant regular automatically scanning, move to setting
Each coordinate points do data acquisition, to complete the data collection task of sample surfaces electromagnetic wave amplitude and phase.
The above is only the preferred embodiment of the utility model only, only to explain the utility model, and does not have to
In limitation the utility model, made any modifications, equivalent replacements, and improvements within all principles in the utility model and spirit
Deng being included within the protection scope of the utility model.
Claims (9)
1. a kind of near field electromagnetic wave measuring system, characterized by comprising: two-dimensional surface mobile system, host computer, vector network
Analyzer, lifting platform, level(l)ing device, near-field measurement probe；
Host computer is connected with vector network analyzer, and the input terminal of vector network analyzer passes through RF connection and near field measurement
Probe is connected, and the output end of vector network analyzer is connected by RF connection with sample, and sample is placed on Level tune dress
It sets；Level(l)ing device is fixed on lifting platform；Lifting platform is fixed on two-dimensional plane coordinate mobile system；Near field measurement is visited
Head is fixed on sample upper space；
The two-dimensional surface mobile system drives lifting platform mobile in X-axis and Y direction by PC control, and lifting platform is used
In the height for adjusting level(l)ing device.
2. near field electromagnetic wave measuring system according to claim 1, it is characterised in that the near field electromagnetic wave measurement system
System further includes detachable upper plate beam wave apparatus；Two-dimensional surface mobile system, lifting platform and level(l)ing device are arranged at institute
It states in detachable upper plate beam wave apparatus；Detachable upper plate beam wave apparatus includes upper plate, frame；The upper plate is metal plate；
The sample is between upper plate and level(l)ing device.
3. near field electromagnetic wave measuring system according to claim 2, it is characterised in that the upper plate intermediate region opens up
There is detection mouth, near-field measurement probe after the detection mouth on detachable upper plate beam wave apparatus by being clamped and fastened on above sample
Space；Or near-field measurement probe is clamped and fixed in detection mouth, probe syringe needle is parallel with upper plate lower surface.
4. near field electromagnetic wave measuring system according to claim 1, it is characterised in that the near field electromagnetic wave measurement system
System further includes detachable probe clamping device；Near-field measurement probe is clamped and fastened on sample by detachable probe clamping device
Product upper space, detachable probe clamping device are non-metallic material.
5. near field electromagnetic wave measuring system according to claim 4, it is characterised in that the detachable probe clamping
Device includes pedestal fixed block, optical axis, support rail, T-type connection sliding block, cable line card；Pedestal fixed block and two-dimensional surface move
The pedestal of dynamic system is fixedly connected, and pedestal fixed block is connect with optical axis, and optical axis is connected with support rail by T-type connection sliding block,
Near-field measurement probe is clamped on support rail by cable wire card.
6. near field electromagnetic wave measuring system as described in claim 1, it is characterised in that the near field electromagnetic wave measuring system
It further include detachable probe clamping device and detachable upper plate beam wave apparatus；Detachable upper plate beam wave apparatus and two dimension are flat
Face mobile system is detachably connected；Detachable upper plate beam wave apparatus includes upper plate, frame；Upper plate is metal plate；Sample is located at
Between upper plate and level(l)ing device；Two-dimensional surface mobile system, lifting platform, level(l)ing device and the clamping of detachable probe
Device is arranged in the frame；Upper plate intermediate region offers detection mouth；Detachable probe clamping device is nonmetallic
Material；Detachable probe clamping device includes optical axis, T-type connection sliding block and support rail；Optical axis and the mobile system of two-dimensional surface
System is fixedly connected, and optical axis is connected with support rail by T-type connection sliding block；Support rail be located at sample upper area be equipped be used for
Clamp the clip of near-field measurement probe；Near-field measurement probe is clamped on support rail or is clamped in detection mouth.
7. near field electromagnetic wave measuring system according to claim 1, it is characterised in that the two-dimensional surface mobile system
Including the first single armed linear robot, the second single armed linear robot, equipment base, linear guides；First single-arm straight
Line robot and the second single armed linear robot include servo controller, sliding rail and sliding block；Servo controller control sliding block exists
It moves along a straight line on sliding rail；Linear guides and the first single armed linear robot are arranged on the equipment base, linearly lead
The sliding rail of rail and the first single armed linear robot is set in parallel, and the two height is equal, and the one of the second single armed linear robot
End is fixed on the sliding block of the first single armed linear robot, and the other end is slidably mounted on linear guides, the
The sliding rail of two single armed linear robots and the perpendicular installation of linear guides；Lifting platform is fixed on the cunning of the second single armed linear robot
On block.
8. near field electromagnetic wave measuring system according to claim 1, it is characterised in that the level(l)ing device includes
Lower plate, support limit plate and several Level tune parts；The support limit plate upper surface is equipped with identical as lower writing board shape
Recessed portion, the recessed portion is for installing lower plate；Level tune part is fixed on support limit plate, lower flat plate bottom by
Several Level tune parts are supported.
9. near field electromagnetic wave measuring system according to claim 8, it is characterised in that the lower plate offers string holes,
Wire casing is equipped in the recessed portion of the support limit plate；The coaxial line of the output end of the vector network analyzer passes through wire casing
It is connected with after string holes with sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201821068960.1U CN208350680U (en) | 2018-07-06 | 2018-07-06 | A kind of near field electromagnetic wave measuring system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821068960.1U CN208350680U (en) | 2018-07-06 | 2018-07-06 | A kind of near field electromagnetic wave measuring system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108872269A (en) * | 2018-07-06 | 2018-11-23 | 深圳凌波近场科技有限公司 | Near field electromagnetic wave measuring system and multifunctional near-field electromagnetic wave measurement method |
| CN111856121A (en) * | 2020-06-03 | 2020-10-30 | 南方电网科学研究院有限责任公司 | Novel electricity testing operation equipment |
-
2018
- 2018-07-06 CN CN201821068960.1U patent/CN208350680U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108872269A (en) * | 2018-07-06 | 2018-11-23 | 深圳凌波近场科技有限公司 | Near field electromagnetic wave measuring system and multifunctional near-field electromagnetic wave measurement method |
| CN111856121A (en) * | 2020-06-03 | 2020-10-30 | 南方电网科学研究院有限责任公司 | Novel electricity testing operation equipment |
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