CN1666108A - Electromagnetic irradiation distribution measurement device - Google Patents
Electromagnetic irradiation distribution measurement device Download PDFInfo
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- CN1666108A CN1666108A CN 03815709 CN03815709A CN1666108A CN 1666108 A CN1666108 A CN 1666108A CN 03815709 CN03815709 CN 03815709 CN 03815709 A CN03815709 A CN 03815709A CN 1666108 A CN1666108 A CN 1666108A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
- G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
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Abstract
It is possible to measure a neighboring electromagnetic field distribution irradiated from a small-size radio communication device such as a mobile telephone with a high accuracy at a high speed. An electromagnetic irradiation distribution measurement device includes a plurality of U-shaped loop elements (1a to 1n) mounted at a predetermined interval on a printed circuit board (2), a holding substrate (5) having on its lower surface an electromagnetic wave absorption sheet (6), and level detection sections (7a to 7n) to which the loop elements (1a to 1n) are connected via coaxial cables (4a to 4n) fixed to the holding substrate (5). Neighboring electromagnetic field signals detected by the loop elements (1a to 1n) are converted into DC voltage signals (11a to 11n) in the level detection sections (7a to 7n) and output. The signals are converted into digital data by an AD converter (15) and the measurement data on the neighboring electromagnetic field level obtained by detection of a magnetic field component is stored in a processing section (16).
Description
Technical field
The present invention relates to a kind of device that is used to measure electromagnetic radiation characteristic, be specifically related to the electromagnetic radiation apparatus for measuring distribution, be used to measure nearly electromagnetic field distribution from such as cellular radio communication device radiation.
Background technology
Generally, importantly, Design of device and EMC countermeasure are understood the nearly electromagnetic field distribution such as cellular radio communication device, promptly from the electromagnetic wave of what intensity of which partial radiation of device.In the prior art, there is the well known device that is used to measure nearly electromagnetic field distribution, for example disclosed in JP-A-62-237363.This device is a selection type measurement mechanism successively, and wherein about 1000 micro loop devices are arranged in the plane with mesh shape, and the signal that is detected is selected successively by switching diode.
JP-A-9-304456 discloses the parallel detection measurement mechanism, wherein is connected to frequency with each of a plurality of antenna devices of arranged in arrays and selects level sensitive circuit, so that store and handle the signal that is detected simultaneously.Use this configuration, might be by move the plane distribution that a plurality of antenna devices are measured nearly electromagnetic field at predetermined direction.
But, have a problem: existingly select measurement mechanism to finish all successively to need considerable time before measuring at it because by select successively nearly 1000 and the micro loop device measure.Another problem is: detection sensitivity reduces, the perhaps isolation variation between adjacent micro loop device, and especially in the high-frequency range such as the 2GHz frequency band, this is because the capacity between the terminal of switching diode and the frequency response of transmission line.
Only need short Measuring Time though parallel detection type measurement mechanism is favourable at it, because its parallel processing is from the detection signal of a plurality of antenna devices, but this measurement mechanism does not correspond to the measurement of the object to be measured---such as cell phone---with compact size and complicated shape.And, do not consider fully selecting electromagnetic screen between the level detection circuit between antenna device and the level detector and in radio communication device and frequency.
The measurement mechanism that relates to of described two examples does not correspond to the setting or the measurement during intermittently sending of the needed level detection frequency of nearly electromagnetic field of measuring transmission frequency when launching such as cellular radio communication device.And described device does not correspond to and is used for the measure that strengthens measuring accuracy by the detection sensitivity and the variation in the circuit characteristic of level detector or frequency levels detector circuit of proofreading and correct at each micro loop device or antenna device.
The supposition of related these device is from the measurement of the 1GHz that reveals such as the planar object to be measured of electronic circuit board or the lower nearly electromagnetic field of lower frequency.In such as the measurement as the nearly electromagnetic field of the high frequency of the 2GHz frequency band of cellular transmission frequency, the isolation between micro loop device or antenna device is unsatisfactory.
The present invention finishes considering under the above-mentioned situation, and its objective is provides the electromagnetic radiation apparatus for measuring distribution, can measure the nearly electromagnetic field distribution such as the radio communication device radiation of cellular compactness in high speed and high precision.
Summary of the invention
The invention provides the electromagnetic radiation apparatus for measuring distribution, be used to measure nearly electromagnetic field distribution from the radio communication device radiation, it is characterized in that comprising: with a plurality of electromagnetic field sensor that the array shape is arranged, described unit is according to exporting electric signal from the electromagnetic field of radio communication device radiation; Level detector is connected to each of described a plurality of electromagnetic field sensor, and described level detector detects the level that uses the electric signal that each electromagnetic field sensor obtains; Electromagnetic screen, it is disposed between electromagnetic field sensor and the radio communication device and between electromagnetic field sensor and the level detector; Forwarder is used to change the electromagnetic field sensor on measurement plane and the relative position of radio communication device; Arithmetic processing unit is used to store and handle the electromagnetic intensity (electromagnetic field level) as the testing result of the level detector that is associated with relative position.
Use this configuration, might measure in high speed and high precision from distributing such as the nearly electromagnetic field of the high level of cellular radio communication device radiation.
Described electromagnetic radiation apparatus for measuring distribution is characterized in that: described a plurality of electromagnetic field sensor have the printed circuit board (PCB) of the array that a plurality of annular devices have been installed, described printed circuit board (PCB) comprises a plurality of original patterns (ground pattern), and an end of each of described a plurality of annular devices is connected with described a plurality of original patterns one to one.
Use this configuration, might prevent the variation of the isolation (electromagnetic screen) that the electromagnetic coupled by the annular device that constitutes electromagnetic detector causes, improve thus from the measuring accuracy of the nearly electromagnetic field of high frequency of radio communication device radiation.
Described electromagnetic radiation apparatus for measuring distribution is characterized in that: described electromagnetic screen is made of the electromagnetic wave absorber that provides on a face of the support substrate that is used to support described a plurality of electromagnetic field sensor.Use this configuration, the isolation between a plurality of electromagnetic field sensor and level detector is enhanced, and has improved the accuracy of detection of nearly electromagnetic field.
Described electromagnetic radiation apparatus for measuring distribution is characterized in that: provide electromagnetic screen between the adjacent annular device on described a plurality of electromagnetic field sensor.Use this configuration, strengthened the isolation between the annular device that constitutes described electromagnetic field sensor, and can measure accurately from the nearly electromagnetic field distribution of the high frequency of radio communication device radiation.
Described electromagnetic radiation apparatus for measuring distribution is characterized in that: described electromagnetic radiation apparatus for measuring distribution comprises local oscillator, be used to produce local oscillated signal, and described level detector detects electromagnetic intensity in characteristic frequency by the electric signal that mix to use electromagnetic field sensor and obtain and local oscillated signal.
Use this configuration, might measure in high speed and high precision corresponding to nearly electromagnetic field distribution from the optional frequency of the transmission frequency of radio communication device radiation.
Described electromagnetic radiation apparatus for measuring distribution is characterized in that: described electromagnetic radiation apparatus for measuring distribution comprises controller, be used for coming the control survey operation according to the transmit operation of radio communication device, and, when radio communication device was carried out transmission intermittently according to the control of controller, the electromagnetic intensity that is detected by level detector was regularly synchronously stored in the transmission of described arithmetic processing unit and radio communication device.
Use this configuration, might measure in high speed and high precision from the nearly electromagnetic field distribution of the radio communication device radiation of carrying out intermittently sending.
Described electromagnetic radiation apparatus for measuring distribution is characterized in that: the integrated value or the mean value of the described arithmetic processing unit electromagnetic intensity that storage is detected by level detector between the detection period that sends the intermittence corresponding to the predetermined quantity of radio communication device.
Use this configuration, might measure in high speed and high precision from the nearly electromagnetic field distribution of the radio communication device radiation of carrying out intermittently sending.
Described electromagnetic radiation apparatus for measuring distribution is characterized in that: described electromagnetic radiation apparatus for measuring distribution comprises the correction of data getter, be used to obtain each detection sensitivity of a plurality of measuring systems of comprising described a plurality of electromagnetic field sensor and level detector, and acquisition correction of data, described arithmetic processing unit comprises corrector, is used to use described correction of data to correct electromagnetic intensity as the testing result of level detector.
Use this configuration, might improve from the measuring accuracy of the nearly electromagnetic field distribution of radio communication device radiation by following manner: obtain correction of data in advance, and use described correction of data to correct detected electromagnetic intensity corresponding to the characteristic of independent measurement system.
Described electromagnetic radiation apparatus for measuring distribution is characterized in that: described correction of data getter comprises the electromagnetic field generator that is used to produce the reference signal generator of its changeable frequency, arranges explicitly with a plurality of electromagnetic field sensor respectively, described reference signal generator produces with reference to electromagnetic field according to reference signal, and described arithmetic processing unit storage with respect to the detection level of the reference electromagnetic field in a plurality of measuring systems of each frequency dependence connection.
Use this configuration, might improve the measuring accuracy of the radiation of the nearly electromagnetic field that is associated with transmission frequency by following manner: obtain the frequency response the independent measurement system, and correct and use the electromagnetic intensity that depends on the correction of data of described frequency response and detect from the radio communication device radiation.
Description of drawings
Fig. 1 is the configuration according to the electromagnetic radiation apparatus for measuring distribution of the first embodiment of the present invention, (a) is its front view, (b) is its side view;
Fig. 2 according to this embodiment, being used for can be at the block scheme of the electromagnetic wave absorber of the electromagnetic screen between the annular device that the electromagnetic radiation apparatus for measuring distribution is arranged;
Fig. 3 is the side view according to the configuration of the electromagnetic radiation apparatus for measuring distribution of the second embodiment of the present invention;
Fig. 4 illustrates according to the sequential chart second embodiment of the present invention, that follow the measuring operation that sends cellular intermittence;
Fig. 5 is the configuration according to the electromagnetic radiation apparatus for measuring distribution of the third embodiment of the present invention, (a) is its front view, (b) is its side view; And
Fig. 6 is the explanation view of the detection level frequency response data that obtains in the 3rd embodiment.
In the accompanying drawings, label 1a-1n represents annular device, 2 printed circuit board (PCB)s, the 3a-3n original pattern, 5 support substrate, 6,40a-40n electromagnetic wave absorber sheet, the 7a-7n level detector, 8a-8n mixer, 9a-9n bandpass filter, 10a-10n logic detection device, 11a-11n dc voltage signal, 12a-12n local oscillated signal, 13 distributors, 14 local oscillators, 15 AD converter, 16 Arithmetic Sections, 17 cell phones, 18 transfer tables, 22 controllers, the 28a-28n strip line, 29 original patterns, 30a-30n terminating resistor, 31 derived reference signals, 32 distributor circuit, 33a-33n detects the level frequency response data.
Embodiment
Below, with reference to accompanying drawing embodiments of the invention are described.
(first embodiment)
Fig. 1 is the key diagram according to the configuration of the electromagnetic radiation apparatus for measuring distribution of the first embodiment of the present invention.Fig. 1 (a) shows its front view, and Fig. 1 (b) shows its side view.Described electromagnetic radiation apparatus for measuring distribution comprises n annular device 1a-1n, n root concentric cable 4a-4n, a n level detector 7a-7n, supports substrate 5, distributor 13, local oscillator 14, AD converter 15 and Arithmetic Section 16.Described electromagnetic radiation apparatus for measuring distribution designs to be measured from being positioned at the nearly electromagnetic field distribution of the cell phone radiation on the transfer table 18 that is arranged on the annular device 1a-1n.The quantity n that comprises the measuring system of annular device 1a-1n and level detector 7a-7n is for example 9, and generally about 10.
Corresponding to the annular device 1a-1n of electromagnetic field sensor each all by form its every side be the U-shaped of 3 millimeters long and for example the copper cash of 0.5 mm dia form plane of a loop.Described plane of a loop with the shape of array in parallel with each other, install perpendicular to printed circuit board (PCB) 2 ground.Spacing between the neighbor of annular device 1a-1n is set to for example 5 millimeters.
One end of each of annular device 1a-1n is connected to each of on the printed circuit board (PCB) 2 independent original pattern 3a-3n that forms with the form that is associated.The other end is connected to each the center conductor of the concentric cable 4a-4n that constitutes transmission line.The external conductor of each concentric cable 4a-4n is connected to each of original pattern 3a-3n.
Mixer 8a-8n mixes the electromagnetic field signal and the local oscillated signal 12a-12n of the characteristic frequency that is detected by the micro loop device, and is the intermediate-freuqncy signal that has corresponding to the frequency of the difference between two kinds of signals with resultant conversion of signals.For example, the transmission frequency of supposing cell phone 17 is 2000MHz, is that 2200MHz obtains that n intermediate-freuqncy signal---each has the frequency of 200MHz by the frequency configuration with local oscillated signal 12a-12n then.
Bandpass filter 9a-9n is made of for example SAW wave filter or ceramic filter, and allows intermediate-freuqncy signal in bandwidth.Logarithmic detector 10a-10n is made up of logarithm output type polystage amplifier, and output dc voltage signal 11a-11n, and dc voltage signal 11a-11n illustrates the linear level with respect to the decibel value of intermediate-freuqncy signal.
At the transfer table of supporting to have installed on the substrate 5 as forwarder 8, it is supported by four wheels 19, is used to arrange the cell phone 17 as object to be measured.Transfer table 18 is made of the non-magnetic member such as acryl resin, so that avoid for the influence from the nearly electromagnetic field of cell phone 17 radiation, and transfer table 18 can move on the directions X of supporting on the substrate 5 via wheel 19, as shown in the figure.
Then, with so operation according to the electromagnetic radiation apparatus for measuring distribution of this embodiment of configuration of explanation.This example belongs to from the situation of the electromagnetic field of cell phone 17 radiation characteristic frequency.If measure the electromagnetic field of optional frequency, then for example use and repeat following operation in Arithmetic Section 16 Be Controlled and setting in the oscillation frequency of local oscillator 12.
Detected field signal is imported into level detector 7a-7n via concentric cable 4a-4n, and output dc voltage signal 11a-11n, is used in reference to the detection level of each position that is shown in annular device 1a-1n.Then, dc voltage signal 11a-11n is converted into numerical data in AD converter 15, and is stored in the Arithmetic Section 16.The numerical data that is obtained shows the nearly electromagnetic field that is fixed on the Y direction of the cell phone 17 under the state of the precalculated position X1 in the directions X at transfer table 18 and distributes.The resolution of electromagnetic field detection is determined for---for example 5 millimeters---by the interval between adjacent annular device 1a-1n.
Then, transfer table moves preset distance, for example moves 5 millimeters on directions X.Use process same as described above, the numerical data of detection level that is used in reference to the magnetic field of the cell phone 17 that is shown in position X2 is acquired and is stored in the Arithmetic Section 16.By repeating this operation m time, obtain to comprise the nearly electromagnetic field distribution figure of m * n point.For example, by the measuring system that comprises nine annular devices and nine level detectors is provided, and when transmitting transfer table, measure nearly electromagnetic field, obtain to comprise 9 * 9=81 the nearly electromagnetic field distribution of putting 9 parts.
As mentioned above, according to this embodiment, detect the nearly electromagnetic intensity of the point on the Y direction by a plurality of annular device of arranging with predetermined space in array, and described level is converted into numerical data, described numerical data is stored in the Arithmetic Section 16 by parallel.This operation is repeated m time.This allows to measure at a high speed the nearly electromagnetic field distribution from cell phone 17 radiation.
To such an extent as to if be leaked to the level detection circuit 7a-7n from the electromagnetic level of cell phone 17 radiation is enough high, then described level shows as noise, and be reduced in S/N in the measurement than (signal to noise ratio (S/N ratio)).In this embodiment, electromagnetic wave absorber sheet 6 is adhered to the bottom of supporting substrate 5, so that might shield effectively from the electromagnetic wave of cell phone 17 radiation, prevents that thus electromagnetic wave is leaked among the level detector 7a-7n.This has improved the S/N ratio in the measurement that nearly electromagnetic field radiation distributes, and improves measuring accuracy.
Variation as the configuration of in this embodiment annular device can provide electromagnetic wave absorber sheet 40a-40n as the electromagnetic shield between adjacent loop member, so that strengthen the effectiveness between annular device 1a-1n.
Each of electromagnetic wave absorber sheet 40a-40n has hierarchy, and has the sheet metal 42 that clips between two magnetic thin films 41 of about 0.5 millimeters thick, and described two magnetic thin films absorb and the decay electromagnetic wave.Each electromagnetic wave absorber sheet 40a-40n is disposed between two adjacent annular devices.Therefore this electromagnetic coupled between the adjacent annular device that decayed has strengthened isolation, and has improved the position resolution in the measurement that nearly electromagnetic field distributes.
Whether the electromagnetic shield of inserting between adjacent annular device 1a-1n has certain effects, no matter and shielding part just electromagnetic wave absorber such as the magnetic material or the conductor plate such as sheet metal just.Therefore, might be only by electromagnetic wave absorber or only by conductor plate in cost-efficient mode at adjacent annular device 1a-1n or supporting to provide electromagnetic wave absorber sheet 40a-40n between the electromagnetic wave absorber sheet 6 on the bottom of substrate.
The example that the structure of annular device 1a-1n or size are not limited to this embodiment, and can be the antenna of shielding, and size can be the size that obtains in the expectation detection sensitivity of survey frequency.Though the annular device of this embodiment mainly detects magnetic component, be to use miniature dipole or monopole device can mainly measure magnetic-field component.
Though transfer table is transmitted to measure the electromagnetic radiation distribution by scan the cell phone of arranging 17 two-dimensionally on transfer table 18 by the artificially in this embodiment, but also can use actuator such as stepper motor as the forwarder of transfer table 18, so that the described actuator of operation is to drive transfer table 18 under the control of Arithmetic Section 16.This makes to measure handles robotization, and allows to measure at a high speed the nearly electromagnetic field distribution from cell phone 17 radiation.
(second embodiment)
Fig. 3 is the side view according to the configuration of the electromagnetic radiation apparatus for measuring distribution of the second embodiment of the present invention.With given identical symbol of those identical parts and the numeral of Fig. 1, and omit corresponding explanation.
Generally, in order battery power consumption to be reduced to minimum level with the expansion talk time, cell phone is carried out transmission intermittently, does not wherein send emitting radio wave when not sending voice.Therefore, cell phone expectation is in intermittently in the transmit status, and this state has reflected to the virtual condition from the measurement of the nearly electromagnetic field of cell phone radiation.In this, this embodiment shows the configuration of electromagnetic radiation apparatus for measuring distribution of nearly electromagnetic field that is used for measuring in transmit status at cellular intermittence.
Electromagnetic radiation apparatus for measuring distribution according to second embodiment of the invention comprises controller 22, is used for the control survey operation.Connector 22 is the links that are used to import in order to the control signal of externally controlling cell phone 17.Shown in Fig. 4 (a), controller 22 produces control signal 23, and it comprises train of impulses, and described train of impulses is with (being four times in the accompanying drawings) intermittently timed sending output of the predetermined quantity in predetermined period.Control signal 23 outputs to cell phone 17 via the cable 21 that is connected to connector 20, and outputs to Arithmetic Section 16 via cable 24.
By this way, according to this embodiment, might work as and correctly measure nearly electromagnetic field distribution in the period in the time of when cell phone 17 is carried out intermittently transmission, can obtaining to be scheduled to transmitted power.
Though the transmission at intermittence of controller 22 control cell phones 17 and the processing and the storage of the detection data in Arithmetic Section 16 in this embodiment, but produce control signal by sending regularly the intermittence that controller 22 detects cell phones 17 and handling, be used to control the processing of Arithmetic Section 16 and the control signal of storage can provide identical effect with generation according to described detection.
(the 3rd embodiment)
Fig. 5 is the key diagram according to the configuration of the electromagnetic radiation apparatus for measuring distribution of the third embodiment of the present invention, and Fig. 5 (a) shows its front view, and Fig. 5 (b) shows its side view.With given prosign of those parts and numeral identical among Fig. 1, and omit corresponding explanation.
In Fig. 5, on the cellular position that annular device 1a-1n dodges, arranged the printed circuit board (PCB) 27 that constitutes the calibration data getter.Form respectively and be engraved on the lower surface and upper surface of printed circuit board (PCB) 27 via printing etc. corresponding to the strip line 28a-28n of electromagnetic field generator and original pattern 29.One end of each of strip line 28a-28n is equivalent to each terminating of the terminating resistor 30a-30n of characteristic impedance (general 500 ohm), and the other end is connected to the distributor circuit 32 of the output signal that is provided derived reference signal (reference signal generator) 31.
With using wherein the calibration according to the measurement of the electromagnetic radiation apparatus for measuring distribution of this embodiment by configuration like this is described to the example of using calibration according to the measurement of first embodiment.
The reference signal of preset frequency is provided to distributor circuit 32 from derived reference signal 31.Distributor circuit 32 is to the strip line 28a-28n described reference signal that distributes.This causes the electromagnetic field of strip line 28a-28n radiation based on corresponding reference signal.On annular device 1a-1n, encouraged known constant electromagnetic radiation, and detected the electromagnetic field that causes by this excitation from strip line 28a-28n.Identical with the description of first embodiment, the detection level of each annular device is converted into numerical data, and described numerical data is stored in the Arithmetic Section 16.In this embodiment, change to f2 from f1, detect the change in nearly electromagnetic field detection level then and be stored in the Arithmetic Section 16 from the frequency of the reference signal of derived reference signal 31 output.
That is, frequency changes to f2 from f1 with step delta f in derived reference signal 31, producing reference signal, and detects level at the nearly electromagnetic field of each frequency to measure for each annular device 1a-1n.All detection level are stored in the Arithmetic Section 16 with the form of numerical data.As a result, obtain and be stored in the frequency response data 33a-33n of nearly electromagnetic field detection level shown in Figure 6.
When the measurement carried out as the nearly electromagnetic field of the cell phone 17 of object, the detection level frequency response data 33a-33n of above-mentioned acquisition is used to correct the measurement result numerical data of each system.This has calibrated the variation in the detection sensitivity that is caused by frequency in a plurality of systems.
By this way, according to this embodiment, might use the derived reference signal 31 that can produce variable frequency reference signal to come the frequency response of detection sensitivity of each measuring system of measure annular device 1a-1n and level detector 7a-7n, and in Arithmetic Section 16 storage as the measurement result that detects level frequency response data 33a-33n.When carrying out the measurement of cellular nearly electromagnetic field distribution, can use level frequency response data 33a-33n to come correcting measuring data, so that calibrate described device, improve measuring accuracy thus significantly.
Though the strip line 28a-28n that encourages by the reference signal that is produced by derived reference signal 32 is used as the unit that is used to produce with reference to nearly electromagnetic field in this embodiment, also can replace the reference antenna of use such as dipole, monopole or tours antenna.Perhaps, can use its nearly electromagnetic field to pass through to measure and known cell phone.
According to this embodiment, might measure in high speed and high precision from nearly electromagnetic field distribution such as cellular compact radio communication device radiation.Also may measure the nearly electromagnetic field distribution that intermittently sends from carrying out accurately such as cellular radio communication device radiation.And, can introduce the measurement data calibration characteristics,, and can be extracted in the frequency response data of the detection level of electromagnetic field and to obtain and be used for calibration, proofread and correct the measurement data that the design of nearly electromagnetic field distributes thus accurately.
Though describe the present invention in detail with reference to certain embodiments, those skilled in the art can understand, can carry out various changes and modification therein in the case of without departing from the spirit and scope.
The application is based on the Japanese patent application of submitting on May 17th, 2002 2002-143327 number, and it is disclosed in this and is merged in by reference.
Application on the industry
As mentioned above, the invention provides electromagnetic irradiation distribution measurement device, it can high speed and high accuracy Ground is measured from the distribution such as the nearly electromagnetic field of cellular compact radio communication device radiation.
Claims (9)
1. an electromagnetic radiation apparatus for measuring distribution is used to measure the nearly electromagnetic field distribution from the radio communication device radiation, comprising:
A plurality of electromagnetic field sensor are arranged in delegation, and according to exporting electric signal from the electromagnetic field of radio communication device radiation;
Level detector is connected to described a plurality of electromagnetic field sensor, and detects from the level of the electric signal of each electromagnetic field sensor acquisition;
Electromagnetic screen, it is provided between electromagnetic field sensor and the radio communication device and between electromagnetic field sensor and the level detector;
Forwarder is used to change the electromagnetic field sensor on measurement plane and the relative position of radio communication device; And
Arithmetic processing unit is used to store and handle the electromagnetic intensity as the testing result of the level detector that is associated with relative position.
2. according to the electromagnetic radiation apparatus for measuring distribution of claim 1, wherein, described a plurality of electromagnetic field sensor comprises a plurality of annular devices, the printed circuit board (PCB) of described annular device has been installed on it, the a plurality of original patterns that form on described printed circuit board (PCB), described a plurality of original patterns connect so that correspond respectively to an end of annular device.
3. according to the electromagnetic radiation apparatus for measuring distribution of claim 1 or 2, the electromagnetic wave absorber that provides on the face of the support substrate that is used to support described a plurality of electromagnetic field sensor is provided described electromagnetic screen.
4. according to the electromagnetic radiation apparatus for measuring distribution of claim 2, wherein, between the adjacent annular device on described a plurality of electromagnetic field sensor, provide electromagnetic screen.
5. according to the electromagnetic radiation apparatus for measuring distribution of claim 1, also comprise local oscillator, be used to produce local oscillated signal,
Wherein level detector uses the electric signal of electromagnetic field sensor acquisition and the electromagnetic intensity that local oscillated signal detects characteristic frequency by mixing.
6. according to the electromagnetic radiation apparatus for measuring distribution of claim 1, also comprise controller, be used for coming the control survey operation according to the transmit operation of radio communication device,
Wherein, carry out under the situation of transmission intermittently according to the control of controller at radio communication device, the electromagnetic intensity that is detected by level detector is regularly synchronously stored in the transmission of described arithmetic processing unit and radio communication device.
7. according to the electromagnetic radiation apparatus for measuring distribution of claim 6, wherein, the integrated value or the mean value of the described arithmetic processing unit electromagnetic intensity that storage is detected by level detector between the detection period that sends the intermittence corresponding to the predetermined quantity of radio communication device.
8. according to the electromagnetic radiation apparatus for measuring distribution of claim 1, also comprise the correction of data getter, be used to obtain each detection sensitivity of a plurality of measuring systems of comprising described a plurality of electromagnetic field sensor and level detector, and obtain correction of data,
Wherein said arithmetic processing unit comprises corrector, is used to use described correction of data to correct electromagnetic intensity as the testing result of level detector.
9. according to the electromagnetic radiation apparatus for measuring distribution of claim 8, wherein, described correction of data getter comprises the reference signal generator that is used to produce its changeable frequency and is used for producing electromagnetic field generator with reference to electromagnetic field according to reference signal that described electromagnetic field generator is arranged explicitly with a plurality of electromagnetic field sensor respectively;
Wherein, the storage of described arithmetic processing unit with respect to the detection level of the reference electromagnetic field in a plurality of measuring systems of each frequency dependence connection.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002143327A JP4112898B2 (en) | 2002-05-17 | 2002-05-17 | Electromagnetic radiation distribution measurement method |
| JP143327/2002 | 2002-05-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1666108A true CN1666108A (en) | 2005-09-07 |
| CN100514073C CN100514073C (en) | 2009-07-15 |
Family
ID=29545013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB038157098A Expired - Fee Related CN100514073C (en) | 2002-05-17 | 2003-05-09 | Electromagnetic irradiation distribution measurement device |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP4112898B2 (en) |
| CN (1) | CN100514073C (en) |
| AU (1) | AU2003235923A1 (en) |
| CZ (1) | CZ20041123A3 (en) |
| WO (1) | WO2003098239A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109906386A (en) * | 2016-11-07 | 2019-06-18 | 韩国标准科学研究院 | Signal generator and measuring system including signal generator |
| CN110398987A (en) * | 2019-04-12 | 2019-11-01 | 桑尼环保（江苏）有限公司 | Field device order control platform |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006003229A (en) * | 2004-06-17 | 2006-01-05 | Ntt Docomo Inc | Measurement position control device and method |
| JP7216397B2 (en) * | 2018-08-27 | 2023-02-01 | 国立大学法人金沢大学 | Magnetic field space distribution detector |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3328506B2 (en) * | 1996-05-20 | 2002-09-24 | 松下電器産業株式会社 | Electromagnetic radiation measurement device |
| JP3300285B2 (en) * | 1998-05-07 | 2002-07-08 | 松下電器産業株式会社 | Electromagnetic radiation measurement device and measurement system |
-
2002
- 2002-05-17 JP JP2002143327A patent/JP4112898B2/en not_active Expired - Fee Related
-
2003
- 2003-05-09 WO PCT/JP2003/005849 patent/WO2003098239A1/en active Application Filing
- 2003-05-09 AU AU2003235923A patent/AU2003235923A1/en not_active Abandoned
- 2003-05-09 CN CNB038157098A patent/CN100514073C/en not_active Expired - Fee Related
- 2003-05-09 CZ CZ20041123A patent/CZ20041123A3/en unknown
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109906386A (en) * | 2016-11-07 | 2019-06-18 | 韩国标准科学研究院 | Signal generator and measuring system including signal generator |
| CN109906386B (en) * | 2016-11-07 | 2021-06-08 | 韩国标准科学研究院 | Signal generator and measuring system comprising a signal generator |
| CN110398987A (en) * | 2019-04-12 | 2019-11-01 | 桑尼环保（江苏）有限公司 | Field device order control platform |
| CN110398987B (en) * | 2019-04-12 | 2020-08-28 | 台州明创科技有限公司 | Field device command control platform |
Also Published As
| Publication number | Publication date |
|---|---|
| CZ20041123A3 (en) | 2005-09-14 |
| JP4112898B2 (en) | 2008-07-02 |
| CN100514073C (en) | 2009-07-15 |
| AU2003235923A1 (en) | 2003-12-02 |
| JP2003337152A (en) | 2003-11-28 |
| WO2003098239A1 (en) | 2003-11-27 |
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