CN205982602U - Device and system are checied to radio frequency electric field probe - Google Patents
Device and system are checied to radio frequency electric field probe Download PDFInfo
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- CN205982602U CN205982602U CN201620919517.5U CN201620919517U CN205982602U CN 205982602 U CN205982602 U CN 205982602U CN 201620919517 U CN201620919517 U CN 201620919517U CN 205982602 U CN205982602 U CN 205982602U
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Abstract
The utility model provides a device and system are checied to radio frequency electric field probe, wherein, the device includes: set up in the inside signal generator of casing to reach the electric feeding means who is connected with this signal generator electricity, the outside of above -mentioned casing be provided with with radio frequency electric field probe assorted probe anchor clamps for fixed radio -frequency electric field probe, the electromagnetic signal that above -mentioned signal generator is used for sending vinyl ester resin and predetermines power to at the stable electromagnetic field of probe anchor clamps position production. The utility model discloses can generate the electromagnetic signal that stablizes of specific frequency and specific power, promoted the accuracy of verifying to radio frequency electric field probe during going on when existing field test, portable is simplified to the structure in addition.
Description
Technical field
This utility model is related to electromagnetic technology field, pops one's head in check device and be in particular to a kind of rf electric field
System.
Background technology
Rf electric field probe is the important component part of electromagnetic radiation monitoring instrument, for the electromagnetic signal in monitoring of environmental,
Generally it is made up of dipole antenna, detector diode, high resistant line.Due to environmental condition (such as electromagnetic interference, radiation, temperature, wet
Degree, power supply etc.) impact and the factor such as movement, vibrations impact, in use for some time, the Electronic Performance of said elements
It is likely to occur change, and then impact is produced on monitoring result.In order to ensure the accuracy of monitoring result, need to rf electric field
Probe is verified during carrying out and (is referred specifically to, for keeping the credibility to equipment Alignment state, carry out between instrument is examined and determine twice
Verify).Verified by period and to determine whether rf electric field probe meets monitoring requirement, and then ensure the matter of monitoring result
Amount.
Using gtem cell, rf electric field would generally be popped one's head in the lab in prior art and verify, will penetrate
Frequency electric field probe is placed in gtem cell, the field intensity value in monitoring gtem cell, and according to the field intensity value monitoring and reality
Field intensity value carries out contrasting the accuracy to assess probe measurement.However, gtem cell bulky it is impossible to carrying and applying existing
In, veritification place is made to be restricted.Additionally, the system price costliness veritified using gtem cell, largely increase
Big verification cost.
Therefore, verify during in order to carry out to the rf electric field probe of electromagnetic radiation monitoring instrument in testing at the scene,
Prior art is generally simply verified to radio-frequency probe by the way of measurement mobile phone signal, however, realizing this practicality
In Novel process, utility model people finds that in prior art, at least there are the following problems：(1) mobile phone signal is not stabilization signal
Source, because the signal intensity that mobile phone sends is related to mobile phone state, for example, whether mobile phone is in call or whether execute other behaviour
Making (as connection network) all can affect the intensity of mobile phone signal it is impossible to ensure the stability of mobile phone signal；(2) handset emissions sky
Distance between line and tested probe and relative position cannot be fixed, and electromagnetic wave can produce decay in free space transmission, therefore
Probe is monitored apart from different orientation in distance signal source, and measured value difference can be very big.
For application mobile phone signal in above-mentioned test at the scene, the rf electric field of electromagnetic radiation monitoring instrument was popped one's head in into the departure date
Between verify and have that interference factor is more, lead to the problem that the accuracy verified is poor, not yet propose effective solution at present.
Utility model content
In view of this, the purpose of this utility model embodiment is to provide a kind of rf electric field probe check device and is
System, can give up the traditional approach using mobile phone signal, rf electric field probe verified in technical staff's on-the-spot test, lead to
Cross and can produce the rf electric field probe check device generation characteristic frequency of stable electromagnetic field and the electromagnetic signal of certain power, pole
Big improves the accuracy verified during rf electric field probe is carried out.
In a first aspect, this utility model embodiment provides a kind of rf electric field probe check device, including：It is arranged at shell
The signal generator in internal portion, and the power supply part electrically connecting with this signal generator；The outside of housing is provided with and radio frequency
The probe gripper that electric field probe matches, for fixed RF electric field probe；Signal generator is used for sending predeterminated frequency and pre-
If the electromagnetic signal of power, to produce stable electromagnetic field in probe gripper position.
In conjunction with a first aspect, this utility model embodiment provides the first possible embodiment of first aspect, its
In, above-mentioned signal generator includes：Local oscillator module, for generating and sending the electromagnetic signal of predeterminated frequency；With local oscillator module phase
The wave filter connecting, for receiving electromagnetic signal, is filtered to this electromagnetic signal processing, exports filtered electromagnetic signal；
The signal amplifier being connected with wave filter, for receiving this filtered electromagnetic signal, according to the voltage amplification factor setting
This filtered electromagnetic signal is carried out with voltage amplification, the electromagnetic signal after output voltage amplification；It is connected with signal amplifier
Power amplifier, for receiving voltage amplify after electromagnetic signal, according to amplification corresponding with predetermined power to this electricity
Electromagnetic signal after pressing greatly carries out power amplification, the electromagnetic signal after output amplification；It is connected with power amplifier
Antenna, for the electromagnetic signal of emission power amplifier output.
In conjunction with the first possible embodiment of first aspect, this utility model embodiment provides the of first aspect
Two kinds of possible embodiments, wherein, above-mentioned signal generator also includes：The power monitor being connected with power amplifier, with
And the main controller being connected respectively with this power monitor and signal amplifier；Power monitor is used for real-time monitoring power amplifier
The power data of the electromagnetic signal of output, and power data is exported to main controller；Main controller is put to signal according to power data
The voltage amplification factor of big device carries out real-time regulation, so that power amplifier output has the electromagnetic signal of predetermined power.
In conjunction with the possible embodiment of the second of first aspect, this utility model embodiment provides the of first aspect
Three kinds of possible embodiments, wherein, above-mentioned local oscillator module includes：Multiple local oscillation circuits, the corresponding frequency range of multiple local oscillation circuit
Different；Wave filter includes the multiple subfilters connecting one to one with multiple local oscillation circuits, each local oscillation circuit with right
The subfilter answered forms a branch road；Above-mentioned main controller is also connected with multiple subfilters respectively, opening for controlling brancher
Open and close.
In conjunction with the possible embodiment of the second of first aspect, this utility model embodiment provides the of first aspect
Four kinds of possible embodiments, wherein, said apparatus also include control button, and this control button is connected with main controller, is used for
Preset frequency and the power of the electromagnetic signal that signal generator sends.
In conjunction with the possible embodiment of the second of first aspect, this utility model embodiment provides the of first aspect
Five kinds of possible embodiments, wherein, the direction that probe gripper is arranged on hull outside is relevant with the direction of antenna；And probe clip
Tool is the interior caulking groove for being fitted together to rf electric field probe.
In conjunction with a first aspect, this utility model embodiment provides the 6th kind of possible embodiment of first aspect, its
In, above-mentioned power supply part includes rechargeable battery and/or power interface, and power interface is used for connecting extraneous electricity by power line
Source.
In conjunction with the possible embodiment of the second of first aspect, this utility model embodiment provides the of first aspect
Seven kinds of possible embodiments, wherein, above-mentioned hull outside is additionally provided with display lamp；Display lamp respectively with main controller and power supply
Part is connected；Wherein, this display lamp includes charging indicator light and relay indicating light.
In conjunction with a first aspect, this utility model embodiment provides the 8th kind of possible embodiment of first aspect, its
In, said apparatus also include display screen, and this display screen is connected with above-mentioned signal generator, for showing what signal generator sent
The parameter value of electromagnetic signal；Wherein, display screen includes：LCDs, LED display, LCD display or touch display screen.
Second aspect, this utility model embodiment also provides a kind of rf electric field probe checking system, and this system includes the
The rf electric field probe check device of one side, also includes electromagnetic radiation monitoring instrument；Wherein, the radio frequency electrical of electromagnetic radiation monitoring instrument
Field probe is matched with probe gripper.
This utility model embodiment provides a kind of rf electric field probe check device and system, is occurred by arranging signal
Device, can produce the electromagnetic signal of predeterminated frequency and predetermined power；By setting outside this device and rf electric field probe phase
The probe gripper of coupling, can preferably fix probe, probe and the position phase of the antenna of transmission of electromagnetic signals can be made to fix.
With test at the scene in prior art in application mobile phone signal the rf electric field of electromagnetic radiation monitoring instrument probe is carried out during core
Look into that to there is interference factor (as unstable in mobile phone signal, antenna for mobile phone and relative probe position be not fixing etc.) more, lead to verify
The poor problem of accuracy compare, this utility model embodiment can produce stable electromagnetic field, and send characteristic frequency and
The electromagnetic signal of especially power carries out the verification of many-sided performance to pop one's head in rf electric field, is greatly improved to rf electric field
Accuracy and reliability that probe is verified during carrying out.
For enabling above-mentioned purpose of the present utility model, feature and advantage to become apparent, preferred embodiment cited below particularly, and
Accompanying drawing appended by cooperation, is described in detail below.
Brief description
In order to be illustrated more clearly that the technical scheme of this utility model embodiment, below will be to use required in embodiment
Accompanying drawing be briefly described it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should be by
Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, also may be used
To obtain other related accompanying drawings according to these accompanying drawings.
Fig. 1 shows a kind of structural representation of rf electric field probe check device that this utility model embodiment is provided
Figure；
Fig. 2 shows a kind of structural representation of signal generator that this utility model embodiment is provided；
Fig. 3 shows the structural representation of another kind of signal generator that this utility model embodiment is provided；
Fig. 4 shows the structural representation of another kind of signal generator that this utility model embodiment is provided；
Fig. 5 shows a kind of concrete size of rf electric field probe check device that this utility model embodiment is provided；
Fig. 6 shows that a kind of backside structure of rf electric field probe check device that this utility model embodiment is provided is shown
It is intended to；
Fig. 7 shows a kind of structural representation of rf electric field probe checking system that this utility model embodiment is provided
Figure；
Fig. 8 shows a kind of broken line graph of radio-frequency probe frequency response of reflection that this utility model embodiment is provided；
Fig. 9 shows a kind of broken line graph of radio-frequency probe frequency response of reflection that this utility model embodiment is provided；
Figure 10 shows a kind of broken line graph of the radio-frequency probe linearity of reflection that this utility model embodiment is provided；
Figure 11 shows the isotropic broken line graph of a kind of radio-frequency probe of reflection that this utility model embodiment is provided；
Illustrate：
100- housing 200- signal generator
300- probe gripper 401- charging indicator light
402- relay indicating light 501- power interface
502- rechargeable battery 600- switchs
210- local oscillator module 211,212,213- local oscillation circuit
220- wave filter 221,222,223- subfilter
230- signal amplifier 240- power amplifier
250- power monitor 260- main controller
1- rf electric field probe check device 2- rf electric field probe
3- monitor main frame
Specific embodiment
Purpose, technical scheme and advantage for making this utility model embodiment are clearer, new below in conjunction with this practicality
Accompanying drawing in type embodiment, is clearly and completely described it is clear that described to the technical scheme in this utility model embodiment
Embodiment be only a part of embodiment of this utility model, rather than whole embodiment.Generally described in accompanying drawing herein
Can be arranged with various different configurations with the assembly of this utility model embodiment illustrating and design.Therefore, below to
The detailed description of the embodiment of the present utility model providing in accompanying drawing is not intended to limit claimed model of the present utility model
Enclose, but be merely representative of selected embodiment of the present utility model.Based on embodiment of the present utility model, those skilled in the art exist
The every other embodiment being obtained on the premise of not making creative work, broadly falls into the scope of this utility model protection.
In view of application mobile phone signal in testing at the scene in prior art, the rf electric field of electromagnetic radiation monitoring instrument is visited
Head is verified during carrying out has interference factor (as unstable in mobile phone signal, antenna for mobile phone and relative probe position be not fixing etc.) relatively
Many, lead to the poor problem of the accuracy of verification, this utility model embodiment provides a kind of rf electric field probe check device
And system, can produce stable electromagnetic field, and send the electromagnetic signal of characteristic frequency and special power to visit to rf electric field
Head carries out the verification of many-sided performance, effectively improves the accuracy verified during rf electric field probe is carried out and reliability.
And structure is simplified and is easy to carry, can verify during multiple occasions carry out scene to radio-frequency probe.Enter below by embodiment
Row is discussed in detail.
Embodiment 1
This utility model embodiment provides a kind of rf electric field probe check device, a kind of radio frequency shown in Figure 1
The structural representation of electric field probe check device, this device includes：It is arranged at the signal generator 200 within housing 100, and
The power supply part electrically connecting with signal generator 200；
The outside of housing 100 is provided with the probe gripper 300 matching with rf electric field probe, for fixed RF electric field
Probe；
Signal generator 200 is used for sending the electromagnetic signal of predeterminated frequency and predetermined power, to be located in probe gripper 300
Position produces stable electromagnetic field.
Above-mentioned rf electric field probe check device passes through to arrange signal generator, can produce predeterminated frequency and predetermined power
Electromagnetic signal；The probe gripper being matched with rf electric field probe by setting outside this device, can be preferably fixing
Probe, can make probe and the position phase of the antenna of transmission of electromagnetic signals fix；And this apparatus structure simplifies, it is easy to carry, energy
Enough apply and carry out on-the-spot test in multiple outdoor occasion.To sum up, the rf electric field probe that this utility model embodiment provides is verified
Device can produce stable electromagnetic field, and send the electromagnetic signal of characteristic frequency and special power with rf electric field is popped one's head in into
The verification of row many-side performance, is greatly improved the accuracy verified during rf electric field probe is carried out and reliability.
During concrete application, a kind of structural representation of signal generator shown in Figure 2, this signal generator
Including：
Local oscillator module 210, for generating and sending the electromagnetic signal of predeterminated frequency；
The wave filter 220 being connected with local oscillator module 210, for receiving electromagnetic signal, is filtered to electromagnetic signal locating
Reason, exports filtered electromagnetic signal；
The signal amplifier 230 being connected with wave filter 220, for the electromagnetic signal after accepting filter, according to set
Voltage amplification factor carries out voltage amplification, the electromagnetic signal after output voltage amplification to filtered electromagnetic signal；
The power amplifier 240 being connected with signal amplifier 230, the electromagnetic signal after amplifying for receiving voltage, press
According to amplification corresponding with predetermined power, the electromagnetic signal after voltage amplification is carried out with power amplification, after output amplifies
Electromagnetic signal；
The antenna being connected with power amplifier 240, for the electromagnetic signal of emission power amplifier output.
Signal generator passes through local oscillator module, can obtain the electromagnetic signal of predeterminated frequency；Pass through wave filter again to signal
It is filtered and signal amplifier carries out voltage amplification etc. and processes to signal, then generate predetermined power via power amplifier
Electromagnetic signal, and the electromagnetic signal that this has predeterminated frequency, predetermined power is sent by antenna.Uncertainty with mobile phone signal
Compare, the signal generator being provided using the present embodiment, the electromagnetism of characteristic frequency and power can be produced according to actual demand
Signal, simultaneously relatively stable.
Further it is contemplated that the power of electromagnetic signal that antenna sends may be had with actual default electromagnetic signal power partially
Difference, not very accurate, in order to accurately be had the electromagnetic signal of predetermined power, shown in Figure 3, in figure
On the basis of 2, above-mentioned signal generator can also include the power monitor 250 being connected with power amplifier 240, and and work(
The main controller 260 that rate monitor 250 and signal amplifier 230 connect respectively；
Wherein, power monitor 250 is used for the power data of the electromagnetic signal of real-time monitoring power amplifier 240 output,
And export power data to main controller 260；Main controller 260 voltage amplification times to signal amplifier 230 according to power data
Number carries out real-time regulation, so that power amplifier 240 output has the electromagnetic signal of predetermined power.
Real-time monitoring is carried out to the electromagnetic signal power that antenna exports by power monitor, and by related power data
Feed back to main controller, main controller, according to the amplification of practical situation Regulate signal amplifier, monitors up to power monitor
Electromagnetic signal can reach certain power (i.e. predetermined power), further ensure that rf electric field pop one's head in check device verification
More accurate.
Verify rf electric field probe frequency respective performances need electromagnetic signal using multiple different frequencies to pop one's head in into
Row detection, in order that result is more representative it will usually the frequency of selection different frequency sections is as predeterminated frequency.In view of individually
The frequency that produces of local oscillation circuit generally only in a certain frequency range, in order that frequency range span is big, multiple local oscillators can be adopted
Circuit realiration, and the filtering frequency range of different wave filter is different, so being also required to arrange the filtering corresponding with local oscillation circuit frequency range
Device.Therefore local oscillator module includes multiple local oscillation circuits, and the corresponding frequency range of multiple local oscillation circuit is different；Wave filter includes and many
Multiple subfilters that individual local oscillation circuit connects one to one, each local oscillation circuit forms one with corresponding subfilter
Road；Meanwhile, main controller is also connected with multiple subfilters respectively, for the open and close of controlling brancher.Specifically permissible
Shown in Figure 4, in figure illustrate only local oscillation circuit 211, local oscillation circuit 212, local oscillation circuit 213 totally 3 local oscillation circuits, and
Subfilter 221, subfilter 222, subfilter 223 totally 3 subfilters, can multiple of relative set according to the actual requirements
Shake circuit and subfilter, will not be described here.
By way of using multiple local oscillation circuits, the larger electromagnetic signal of frequency span can be produced, make to probe
Frequency accordingly verifies result more credibility.During implementing, can once test and only connect using variable connector to control
Connect a branch road, will not be described here.Certainly, can be realized by a local oscillation circuit if verifying the required frequency range of probe,
A local oscillation circuit and a wave filter is only disposed in signal generator.
Set frequency, power of required electromagnetic field etc. for the ease of user, above-mentioned check device can also include controlling
Button processed, control button is connected with main controller, for presetting frequency and the work(of the electromagnetic signal that signal generator sends
Rate, so that signal generator sends the electromagnetic signal needed for user.
The performance that rf electric field probe check device is verified to radio-frequency probe includes each same tropism, and that is, reflection omnidirectional probe exists
The concordance of different directions measurement result；Referring again to shown in Fig. 1, probe gripper is arranged on direction and the antenna of hull outside
Direction is relevant；And probe gripper is the interior caulking groove for being fitted together to rf electric field probe.
Can learn that the dipole antenna (being placed in the spheroid of probe upper end) of probe (is placed with high resistant line based on experience value
Probe support bar in) angle be 54.7 °, the special probe gripper of this check device will be checked spy in actual applications
Head is fixed on the position with 54.7 ° of antenna direction of the launch angle, can be found in a kind of rf electric field probe check device shown in Fig. 5
Concrete size, the axis of probe gripper laterally becomes 54.7 ° with housing；This device overall length 30cm, longitudinally width 7.6cm, very
Compact portable.Can refer to Fig. 5 in actual applications and manufacture rf electric field probe check device it is also possible to flexibly change according to demand
Its size or profile etc., will not be described here.
Because the rf electric field that the present embodiment is provided pops one's head in check device for portable, need to ensure that this check device exists
Outdoor is able to maintain that electricity with normal work, therefore in a particular application, above-mentioned power supply part can using rechargeable battery and/
Or the form realization of power interface, wherein, power interface can be used for connecting extraneous power supply by power line.Can be found in Fig. 1 respectively
Filling in a kind of rf electric field probe check device structure schematic diagram shown in shown power interface 501 and Fig. 6
Battery 502, rechargeable battery 502 may be provided at the bottom position of check device, and specifically in signal generator, (in figure is not shown
Go out) behind, and power interface may be provided at the sidepiece of check device, its power interface device internal with signal generator with
And rechargeable battery is connected.Wherein, when application scenario can provide external power supply, this device can by power interface with
External power supply is connected, and can also charge for rechargeable battery while electricity consumption；When not having external power supply, this device can be by
Rechargeable battery is powered, thus being flexibly applied to multiple occasions.
Additionally, in order to allow user be well understood to the state of check device, hull outside is additionally provided with display lamp；Instruction
Lamp can be connected with main controller and power supply part respectively；Wherein, shown in Figure 1, display lamp includes charging indicator light 401 and work
Make display lamp 402.
The switch 600 of device is also show, for controlling being turned on and off of this device in Fig. 1.
Further, device can also include display screen, and this display screen is connected with signal generator, for showing signal generation
The parameter value of the electromagnetic signal that device sends, wherein, display screen includes：LCDs, LED display, LCD display or touch
Display screen.It should be noted that if touch display screen, user directly can be set by touch display screen needed for electromagnetism
The frequency of field and power are equivalent, now can not need control button.
The said apparatus that the present embodiment provides, can produce stable electromagnetic field, and send characteristic frequency and special power
Electromagnetic signal so that the verification of many-sided performance is carried out to rf electric field probe, being greatly improved and rf electric field probe carried out
Accuracy and reliability that period verifies；And structure is simplified, it is easy to carry it is adaptable to carry out to radio-frequency probe under multiple occasion
On-the-spot test.
Embodiment 2
For the rf electric field probe check device provided in embodiment 1, this utility model embodiment provides one kind
Rf electric field is popped one's head in checking system, and a kind of rf electric field shown in Figure 7 is popped one's head in the structural representation of checking system, this system
The rf electric field probe check device 1 being provided including embodiment 1, also includes electromagnetic radiation monitoring instrument；Wherein, electromagnetic radiation prison
The rf electric field probe 2 surveying instrument is matched with probe gripper.This electromagnetic radiation monitoring instrument specifically includes rf electric field probe 2 and prison
Survey instrument main frame 3.The probe gripper of rf electric field probe check device 1 shown in Fig. 7 and rf electric field probe 2 fasten.
By will the probe of electromagnetic radiation monitoring instrument and rf electric field pop one's head in check device probe gripper mutually chimeric, can
The aerial position phase popped one's head in the signal generator in check device is fixed, this antenna can be at probe position simultaneously
Produce stable electromagnetic field, and the frequency of this electromagnetic field and power can preset according to verifying needs, it is right comprehensively to realize
The period of rf electric field probe verifies, and the rf electric field probe checking system accuracy that therefore the present embodiment provides and reliability are equal
Higher.
Rf electric field that the present embodiment is provided probe checking system, it realizes the technique effect of principle and generation and aforementioned
Embodiment is identical, and for briefly describing, the present embodiment part does not refer to part, refers to corresponding contents in previous embodiment.
Embodiment 3
In conjunction with previous embodiment, this gives the rf electric field probe apparatus pair that a kind of Application Example 1 provides
The concrete application that rf electric field probe is verified during carrying out.
Can be referring back to shown in Fig. 7, when being verified, it is first determined radio-frequency probe is connected with monitor main frame, then
Again radio-frequency probe is put in the special probe gripper of checking system, because radio-frequency probe uses generally in radio frequency testing, because
This verifies during probe being carried out in the range of 800MHz-3GHz, the performance that rf electric field probe apparatus are verified to radio-frequency probe
Including frequency response, the linearity and isotropism.
(1) frequency response
Frequency response is the concordance to different frequency signals response for the reflection probe, the signal measured value to different frequency for the probe
Difference is less, and performance is better.
When carrying out the verification of frequency response, produced the signal of different frequency by local oscillator, by the amplification of amplifier, make not
The signal power of same frequency is identical, that is, being checked the measured value to different frequency signals of popping one's head in should be consistent in theory.And it is real
On border, probe is constantly present difference to the measured value of the signal of different frequency size, and this species diversity just reflects the frequency of probe
Rate response characteristic.Line-of-sight course is typically adopted to weigh the frequency response characteristic of probe.As shown in figure 8, local oscillator creates f1, f2, f3
The signal of totally 3 frequencies, by the control to signal amplifier for the main control unit, the electric field intensity producing in probe gripper is identical
's.And actual be checked pop one's head in the detection income value of these three frequencies and incomplete same, by assessing actual measured value and reason
Difference by measured value, you can the frequency response characteristic of probe must be checked.
Based on the verification principle of said frequencies response, the present embodiment selects tri- frequencies of 900MHz, 1.8GHz, 2.45GHz
Verified.Because frequency ratio is relatively decentralized, signal generator need to realize the generation of these three frequency signals with three local oscillators.Accordingly
Ground, need to realize filtering with three wave filter.The structure chart of signal generator can be referring back to shown in Fig. 4.
By the amplification of main controller Regulate signal amplifier, the signal electric field intensity theoretical value of each frequency is made to be
4V/m.The actually detected frequency response curve that obtains can be found in shown in Fig. 9, therefore can judge that radio frequency is visited based on this frequency response curve
The frequency response performance of head.
(2) linearity
The linearity is to reflect that, when measured signal field intensity Linear proportional increases, probe measurement values Linear proportional increases
Degree.The degree that measured value Linear proportional increases is better, and probe performance is better.
When carrying out the verification of the linearity, by main control unit control signal amplifier, it is allowed to signal is carried out with different amplifications
The amplification of multiple so that being checked the proportional linear increase of theoretical measured value to each signal for the probe, as 1V/m, 5V/m,
10V/m, and the actual measured value being checked probe may be 1.5V/m, 4.8V/m, 10.7V/m, in the increasing of non-linear non-proportional
Long.By assessing the difference of actual measured value and theoretical measured value, you can the linearity of probe must be checked.
Based on the verification principle of the above-mentioned linearity, the present embodiment is verified to probe from the signal of 1.8GHz frequency,
By Regulate signal amplifier, make the preferable measured value of probe be respectively 1V/m, 5V/m, 10V/m, be checked the actual measured value of probe
For 1.5V/m, 4.8V/m, 10.7V/m, thus make broken line graph as shown in Figure 10, you can judge that radio frequency is visited according to this broken line graph
The linearity performance of head.
(3) isotropism
Isotropism is the concordance in different directions measurement result for the reflection omnidirectional probe.Radio-frequency probe passes through three mutually
Vertical dipole antenna (in probe) realizes the omnidirectional measurement of probe.
Specifically, three dipole antennas can be set and be located at X, Y, Z axis respectively, X, Y, Z axis is mutually perpendicular to, with high resistant line
Angle be 54.7 °.And the special probe gripper of the rf electric field probe check device that the present embodiment is provided can be quilt
The position that it is 54.7 ° with aerial radiation angular separation that probing head is fixed on, by rotating detector so that three dipole antennas according to
Secondary directional antenna radiation direction, when the direction of the launch of dipole antenna directional signal generator antenna, this dipole antenna is surveyed
The value obtaining is theoretically determine, by comparing the actual measured value of three dipole antennas, you can the isotropism of assessment probe
Characteristic.
In actual verification, with probe support bar as axle, 360 degree of rotating detector, observe the measured value of monitor main frame simultaneously,
Find three maximums, be as located at the actual measured value of three dipole antennas in X, Y, Z axis direction respectively.
Based on above-mentioned isotropic verification principle, the present embodiment is verified from 900MHz frequency, by rotating quilt
Verify probe measurement when X-axis, Y-axis, Z axis are respectively directed to the antenna direction of the launch when measured value.X-axis, Y-axis, Z axis theoretical measured value equal
For 4V/m.As shown in figure 11 according to the broken line that actual measured value is depicted, you can each of radio-frequency probe is judged according to this broken line graph
To same sex characteristic.
In sum, this utility model embodiment is provided a kind of rf electric field probe check device and system, compare
In problems of the prior art, have the characteristics that and advantage：
(1) stable signal source is produced by signal generator, more stable than mobile phone signal；
(2) pass through probe gripper, can fix tested probe and the antenna of signal generator relative position (include away from
From, orientation and angle etc.) so that signal generator produces a stable electromagnetic field away from tested probe positions；And by
In the antenna of signal generator and the distance that is checked between probe is it was determined that and then can determine and calculate the reason of probe
By measured value.
(3) the multiple local oscillators in signal generator can produce the signal of different frequency, the built-in master of synchronous signal generator
Control device can be according to the amplification of the result Regulate signal amplifier of power monitor feedback so that the signal of different frequency be being visited
Electromagnetism intensity at head identical it is achieved that verification to frequency probe response characteristic.I.e.：Signal generator can produce multiple spies
Determine frequency and the field intensity amplitude identical electromagnetic signal at probe gripper.The frequency response generally popped one's head in using line-of-sight course
Test, preferably 900MHz, 1.8GHz, 2.45GHz.
(4) signal generator is utilized to produce the field intensity of different amplitudes in tested probe positions, the linearity for probe is surveyed
Amount.Using the control to signal amplifier for the main controller, adjust the amplification of amplifier, produce the signal of certain strength.Meanwhile,
Adjust amplification by multiple, the signal of multiple electric field intensity grades can be produced at tested probe, to realize to probe
The verification of the linearity.
(5) probe gripper be arranged on hull outside direction relevant with the direction of antenna, according to probe dipole antenna
Angle with high resistant line is 54.7 ° of feature, and the special probe gripper of this check device will be checked probe in actual applications
It is fixed on position with 54.7 ° of antenna direction of the launch angle so that by around high resistant line (in the support bar being placed on probe) rotation
Turn probe, you can make the direction of the launch of the dipole antenna in three directions within probe directional signal generator antenna successively,
Achieve to isotropic verification of popping one's head in.
(6) bulky compared to gtem cell not portable, and expensive problem, this check device size is little
Ingeniously it is easy to carry, be easy to carry out whenever and wherever possible the verification to probe, and greatly reduce cost.
It should be noted that expression similar terms in similar label and alphabetical superincumbent accompanying drawing, therefore, once a certain Xiang Yi
It is defined in individual accompanying drawing, then do not need it to be defined further and explains in subsequent accompanying drawing.
Further, in description of the present utility model, term " " center ", " on ", D score, "left", "right", " vertical ", " water
Flat ", " interior ", the orientation of instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, merely to just
In description this utility model and simplification description, rather than the device of instruction or hint indication or element must have specific side
Position, with specific azimuth configuration and operation, therefore it is not intended that to restriction of the present utility model.Additionally, term " first ",
" second ", " the 3rd " are only used for describing purpose, and it is not intended that indicating or hint relative importance.
In addition, of the present utility model description in, unless otherwise clearly defined and limited, term " installation ", " being connected ",
" connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or is integrally connected；Can be
It is mechanically connected or electrically connect；Can be to be joined directly together it is also possible to be indirectly connected to by intermediary, can be two
The connection of element internal.For the ordinary skill in the art, above-mentioned term can be understood in this practicality with concrete condition
Concrete meaning in new.
The above, specific embodiment only of the present utility model, but protection domain of the present utility model does not limit to
In this, any those familiar with the art, in the technical scope that this utility model discloses, can readily occur in change
Or replace, all should cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should described to weigh
The protection domain that profit requires is defined.
Claims (10)
1. a kind of rf electric field probe check device is it is characterised in that include：It is arranged at the signal generator of enclosure interior, with
And the power supply part electrically connecting with described signal generator；
The outside of described housing is provided with the probe gripper matching with rf electric field probe, is used for fixing described rf electric field spy
Head；
Described signal generator is used for sending the electromagnetic signal of predeterminated frequency and predetermined power, with place in described probe gripper institute
Put and produce stable electromagnetic field.
2. device according to claim 1 is it is characterised in that described signal generator includes：
Local oscillator module, for generating and sending the electromagnetic signal of predeterminated frequency；
The wave filter being connected with described local oscillator module, for receiving described electromagnetic signal, is filtered to described electromagnetic signal
Process, export filtered described electromagnetic signal；
The signal amplifier being connected with described wave filter, for the described electromagnetic signal after accepting filter, according to the electricity setting
Pressure amplification carries out voltage amplification, the described electromagnetic signal after output voltage amplification to filtered described electromagnetic signal；
The power amplifier being connected with described signal amplifier, the described electromagnetic signal after amplifying for receiving voltage, according to
Amplification corresponding with described predetermined power carries out power amplification to the described electromagnetic signal after voltage amplification, and output is put
Described electromagnetic signal after big；
The antenna being connected with described power amplifier, for launching the electromagnetic signal of described power amplifier output.
3. device according to claim 2 is it is characterised in that described signal generator also includes：With described power amplification
The power monitor that device connects, and the main controller being connected respectively with described power monitor and described signal amplifier；
Described power monitor is used for the power data of the electromagnetic signal of power amplifier output described in real-time monitoring, and will be described
Power data exports to described main controller；
Described main controller carries out real-time regulation according to described power data to the voltage amplification factor of described signal amplifier, so that
Described power amplifier output has the electromagnetic signal of described predetermined power.
4. device according to claim 3 is it is characterised in that described local oscillator module includes：Multiple local oscillation circuits, Duo Gesuo
State the corresponding frequency range of local oscillation circuit different；
Described wave filter includes the multiple subfilters connecting one to one with multiple described local oscillation circuits, each described local oscillator electricity
Road forms a branch road with corresponding subfilter；
Described main controller is also connected with multiple described subfilters respectively, for controlling the open and close of described branch road.
5. device according to claim 3 is it is characterised in that described device also includes control button, described control button
It is connected with described main controller, for presetting frequency and the power of the electromagnetic signal that described signal generator sends.
6. device according to claim 3 is it is characterised in that described probe gripper is arranged on the direction of described hull outside
Relevant with the direction of described antenna；And described probe gripper is the interior caulking groove for being fitted together to described rf electric field probe.
7. device according to claim 1 is it is characterised in that described power supply part includes rechargeable battery and/or power supply
Interface, described power interface is used for connecting extraneous power supply by power line.
8. device according to claim 3 is it is characterised in that described hull outside is additionally provided with display lamp；Described instruction
Lamp is connected with described main controller and described power supply part respectively；Wherein, described display lamp includes charging indicator light and work instruction
Lamp.
9. device according to claim 1 is it is characterised in that described device also includes display screen, described display screen and institute
State signal generator to connect, for showing the parameter value of electromagnetic signal that described signal generator sends；Wherein, described display screen
Including：LCDs, LED display, LCD display or touch display screen.
10. a kind of rf electric field probe checking system is it is characterised in that described system is included described in any one of claim 1 to 9
Rf electric field probe check device, also include electromagnetic radiation monitoring instrument；Wherein, the rf electric field of described electromagnetic radiation monitoring instrument
Probe is matched with described probe gripper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620919517.5U CN205982602U (en) | 2016-08-22 | 2016-08-22 | Device and system are checied to radio frequency electric field probe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620919517.5U CN205982602U (en) | 2016-08-22 | 2016-08-22 | Device and system are checied to radio frequency electric field probe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205982602U true CN205982602U (en) | 2017-02-22 |
Family
ID=58033305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620919517.5U Withdrawn - After Issue CN205982602U (en) | 2016-08-22 | 2016-08-22 | Device and system are checied to radio frequency electric field probe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205982602U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106125031A (en) * | 2016-08-22 | 2016-11-16 | 北京森馥科技股份有限公司 | A kind of rf electric field probe check device and system |
-
2016
- 2016-08-22 CN CN201620919517.5U patent/CN205982602U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106125031A (en) * | 2016-08-22 | 2016-11-16 | 北京森馥科技股份有限公司 | A kind of rf electric field probe check device and system |
| CN106125031B (en) * | 2016-08-22 | 2024-01-05 | 北京森馥科技股份有限公司 | Radio frequency electric field probe checking device and system |
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