CN110133389A - A kind of tangential near field electrical field test probe in broadband suitable for GPS frequency range - Google Patents
A kind of tangential near field electrical field test probe in broadband suitable for GPS frequency range Download PDFInfo
- Publication number
- CN110133389A CN110133389A CN201910396754.6A CN201910396754A CN110133389A CN 110133389 A CN110133389 A CN 110133389A CN 201910396754 A CN201910396754 A CN 201910396754A CN 110133389 A CN110133389 A CN 110133389A
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- tangential
- electric field
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- 230000005684 electric field Effects 0.000 title claims abstract description 48
- 238000012360 testing method Methods 0.000 title claims abstract description 36
- 239000000523 sample Substances 0.000 title claims abstract description 33
- 230000005540 biological transmission Effects 0.000 claims abstract description 15
- 239000002184 metal Substances 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 12
- 239000010949 copper Substances 0.000 claims description 12
- 238000010276 construction Methods 0.000 claims description 11
- 238000013461 design Methods 0.000 claims description 9
- 230000010363 phase shift Effects 0.000 claims description 4
- 238000012545 processing Methods 0.000 claims description 2
- 238000003745 diagnosis Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 239000004020 conductor Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
Classifications
-
- 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
- G01R29/12—Measuring electrostatic fields or voltage-potential
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The present invention discloses a kind of tangential near field electrical field test probe in the broadband suitable for GPS frequency range, is made of electric dipole, integrated balun transmission line；Electric dipole is for detecting tangential electric field, including two dipole arms；Electric field probe is based on four layer printed circuit board structures, is successively top layer, the first middle layer, the second middle layer and bottom from top to bottom；Integrated balun is integrated into the tangential electric field probe, and the differential voltage sensed by electric dipole is switched to common-mode voltage；Defeated line is the co-planar waveguide and strip line group layer by having metal backing.The present invention can extract the tangential electric field component in the radio circuit surface worked in GPS frequency band by the probe, obtain more tangential electric field component bring electromagnetic informations, it assists Radio Frequency Engineer to complete the diagnosis to radio circuit failure, provides advantageous means of testing to promote electronic system performance.
Description
[technical field]
The present invention relates to a kind of tangential near field electrical field test probes in broadband suitable for GPS frequency range, exist for capturing work
The tangential electric field of the microwave radio circuit surface of GPS wave band obtains the radio circuit Electromagnetic Launching symbolized by tangential electric field
Feature tracks the coupling path of electromagnetic interference source, belongs to electromagnetic compatibility and electromagnetic field near-field test field.
[background technique]
Modern electronic equipment has used a large amount of integrated electricity just towards multifunction and intelligent development in electronic equipment
Road, highdensity integrated circuit distributed the region of a large amount of different function in narrow space, are compared to conditional electronic and set
Standby, electromagnetic radiation and electromagnetic interference problem are increasingly complex, and the analysis and design of electromagnetic compatibility problem are also more difficult.It is high
In the integrated circuit of density small size, usually multiple chips are placed in the field of a very little, share the same power supply and
Ground networks form mixed-signal system, these chips may include the radio frequency of the even high sensitivity of digital circuit, analog circuit
Front end.
A practical problem for appearing in face of engineer at present is how by a near-field test to complete multiple planes
Radiation prediction.In order to solve this problem, the modeling method based on dipole moment is suggested, but test data needs tangential electricity
The component of field, the ring bring dipole effect for studying magnet field probe are also required to accurately test the parallel component of electric field.To understand
Certainly above-mentioned technical problem, meets the growth requirement of electronics industry, and for radio circuit of the work in GPS frequency band, test is parallel
In the horizontal electric field component of circuit surface, the present invention has developed a kind of tangential near field electricity in the novel broadband suitable for GPS frequency range
Field test probe.
[summary of the invention]
The present invention devises a kind of tangential near field electrical field test probe in the broadband suitable for GPS frequency range, it is therefore an objective to extract work
Make in the tangential electric field component in radio circuit surface in GPS frequency band, Radio Frequency Engineer is assisted to complete to radio circuit failure
Diagnosis provides advantageous means of testing to promote electronic system performance.
In order to meet above-mentioned purpose, the solution of the present invention is as follows:
A kind of tangential near field electrical field test probe in broadband suitable for GPS frequency range, it is passed by electric dipole, integrated balun
Defeated line composition.
The effect of the electric dipole is that tangential electric field is effectively detected；The electric dipole includes two dipoles
Arm, the length of each dipole arm are 4mm, and the spacing between two dipole arms is 0.4mm.
The design and processing of the electric field probe are based on four layer printed circuit board structures；Four layer printed circuits are hardened
Structure is successively top layer, the first middle layer, the second middle layer and bottom from top to bottom.The four layer printed circuit boards medium is by 3 layers
The Rogers 4350B of 0.254mm thickness and the Rogers 4450F of 2 layers of 0.19mm thickness are constituted, wherein the Rogers of 0.19mm thickness
4450F plate is as the prepreg in the laminated construction of four layer printed circuit boards.Two pieces of 0.254mm thickness covers copper Rogers
4350B plate is located at top and bottom end in laminated construction.One piece of the non-of 0.254mm covers copper Rogers's 4350B plate position
Center in laminated construction.Wherein, the copper of the top layer and bottom of the circuit board with a thickness of 0.035mm, in first
Interbed and the copper of the second middle layer with a thickness of 0.017mm.
The differential voltage sensed by electric dipole is switched to common-mode voltage by the integrated balun；The integrated balun
It is integrated into the tangential electric field probe, is not to be connect in a manner of the termination of outside with the tangential electric field probe.Described is integrated
Balun is the design based on power divider and 180 degree phase-shifter, and the signal of power divider output is after 180 degree phase-shifter
Become two constant amplitudes and has the differential signal of stable phase shift.
The tangential electric field tested is transferred to outside the tangential electric field by the transmission line, in order to be tested test instrument institute
It receives.The transmission line is the co-planar waveguide and strip line group layer by having metal backing, and the line width of strip line is 0.38mm,
Characteristic impedance is 50 Ω, and impedance reference plane is that the line width of the co-planar waveguide of top layer and bottom with metal backing is 0.44mm,
Characteristic impedance is 50 Ω, and impedance reference plane is located at the first middle layer.
The tangential near field electrical field test probe in a kind of broadband suitable for GPS frequency range of the invention, advantage and effect are: logical
The tangential electric field component in the radio circuit surface worked in GPS frequency band can be extracted by crossing the probe, obtain more tangential electric fields
Component bring electromagnetic information assists Radio Frequency Engineer to complete the diagnosis to radio circuit failure, to promote electronic system performance
Advantageous means of testing is provided.
[Detailed description of the invention]
Fig. 1 is a kind of tangential near field electrical field test probe printed circuit board laminated structure figure in broadband suitable for GPS frequency range.
Fig. 2 is a kind of overall structure figure of the tangential near field electrical field test probe in broadband suitable for GPS frequency range.
Fig. 3 is the connection schematic diagram of power divider and 180 degree phase-shifter.
Fig. 4 is a kind of calibrated tester figure of the tangential near field electrical field test probe in broadband suitable for GPS frequency range.
Fig. 5 is the calibration characteristics, emulation and test of a kind of tangential near field electrical field test probe in broadband suitable for GPS frequency range
Curve.
Drawing reference numeral explanation:
1-1:SMA connector, 1-2: the co-planar waveguide central metal conductor with metal backing,
1-3: signal via, 1-4: strip line, 1-5: power divider, 1-6:180 degree phase-shifter,
1-7: electric dipole
2-1: uneven port 2-2:1/4 wavelength transmission line 2-3: open stub
2-4: closed stub 2-5: main transmission line 2-6: reference transmission line 2-7: balance ports
3-1: vector network analyzer, 3-2: coaxial cable, 3-3:50 Ω calibrate microstrip line,
3-4:50 Ω matched load, 3-5: the tangential near field electrical field test probe in broadband.
[specific embodiment]
In conjunction with attached drawing, the specific structure, each of the tangential near field electrical field test probe in broadband for GPS frequency range is furtherd elucidate
The positional relationship of the function of component part and each composition part-structure.
Fig. 1 illustrates the tangential near field electrical field test probe printed circuit board in the broadband of the present invention for GPS frequency range
Laminated construction figure.The Rogers 4450F plate of 0.2mm thickness is as the semi-solid preparation in the laminated construction of four layer printed circuit boards
Piece.The top and bottom end covering copper Rogers's 4350B plate and be located in laminated construction of two pieces of 0.254mm thickness.One piece
The non-center covering copper Rogers 4350B plate and being located in laminated construction of 0.254mm.The present invention demonstrated in Figure 1 is related to
The tangential near field electrical field test in the broadband for GPS frequency range pop one's head in laminated construction, the copper of the top layer and bottom of lamination with a thickness of
0.035mm, intermediate 1 layer with intermediate 2 layers of copper with a thickness of 0.017mm.
Fig. 2 illustrates the overall structure of the tangential near field electrical field test probe in the broadband of the present invention for GPS frequency range
Figure.From top to bottom, sub-miniature A connector 1-1, the co-planar waveguide central metal conductor 1-2 with metal backing, signal via 1-3 are band-like
Line 1-4, power divider 1-5,180 degree phase-shifter 1-6 are sequentially connected with dipole.Sub-miniature A connector 1-1 with metal backing
Co-planar waveguide central metal conductor 1-2 is connected by way of pressing, and sub-miniature A connector 1-1 insertion loss is low, has good frequency
Characteristic.
Power divider 1-5 is a bisection power divider, and the signal of power divider output passes through 180 degree phase shift
Become two constant amplitudes after device and has the differential signal of stable phase shift.Fig. 3 clearly shows power divider 1-5 and 180 degree phase
Move the connection equivalent schematic of device.Power divider 1-5 is made of uneven port 2-1 and two section of 1/4 wavelength transmission line 2-2.
180 degree phase instrument 1-6 is joined by two sections of closed stubs 2-4, one section of main transmission line 2-5 of two sections of open stub 2-3 and one section
Examine transmission line 2-6 composition.In the present embodiment, the characteristic impedance of uneven port 2-1 and balance ports 2-7 is designed to 50
Ω, but design scheme of the invention can be not limited to 50 Ω.The spy of two section of 1/4 wavelength transmission line 2-2 of power divider
Property impedance be 70.7 Ω；Open stub 2-3 and closed stub 2-4 is the strip line of 1/8 wavelength, characteristic impedance 63.5
Ω；Main transmission line 2-5 is the strip line of 1/2 wavelength, and characteristic impedance is 80.5 Ω；Reference transmission line 2-6 is the band-like of 1 wavelength
Line, characteristic impedance are 50 Ω.
The frequency characteristic of the tangential near field electrical field test probe in the broadband that GPS frequency range is used for designed by the present invention is surveyed
Examination, as shown in Figure 4.50 Ω calibrate microstrip line 3-3 and terminate 50 Ω matched load 3-4 of broadband, guarantee that traveling wave is propagated along x-axis.Institute
Design tangential electric field probe according to the requirement of Fig. 4 be placed on 50 Ω calibration microstrip line 3-3 above 2mm height and along y-axis it is inclined
From 2.5mm.At sustained height, deviateing the position 2.5mm along y-axis is 50 Ω calibration microstrip line 3-3y axis direction electric field strength
Maximum value.Vector network analyzer 3-1, setting test frequency range are 1.35GHz to 1.85GHz.The end of vector network analyzer 3-1
Mouth 2 calibrates microstrip line 3-3 by 50 Ω of coaxial cable 3-2 connection, and port 1 is connected to tangential electric field by coaxial cable 3-2 and visits
The sub-miniature A connector 1-1 of head.The frequency characteristic tested is as shown in figure 5, emulation | S12 | curve is obtained with test |
S12 | curve coincide very well.
It should be pointed out that technological means disclosed by the invention, design method are not limited only to the present invention, it is also applied for simultaneously
The other sides derived in conjunction with design philosophy of the present invention, inventive method, technological means and technical characteristic of the present invention
Case, inventive method, invention product, therefore these other schemes for being derived, inventive method, invention product are regarded as this hair
The range of bright protection.
Claims (4)
1. a kind of tangential near field electrical field test probe in broadband suitable for GPS frequency range, it is characterised in that: the test is popped one's head in by galvanic couple
Extremely son, integrated balun transmission line composition；
The electric dipole is for detecting tangential electric field；The electric dipole includes two dipole arms,
The design and processing of the electric field probe are based on four layer printed circuit board structures；Four layer printed circuits are hardened
Structure is successively top layer, the first middle layer, the second middle layer and bottom from top to bottom；The four layer printed circuit boards medium is by 3 layers
The Rogers 4350B of 0.254mm thickness and the Rogers 4450F of 2 layers of 0.19mm thickness are constituted, wherein the Rogers of 0.19mm thickness
4450F plate is as the prepreg in the laminated construction of four layer printed circuit boards；Two pieces of 0.254mm thickness covers copper Rogers
4350B plate is located at top and bottom end in laminated construction；One piece of the non-of 0.254mm covers copper Rogers's 4350B plate position
Center in laminated construction；Wherein, the copper of the top layer and bottom of the circuit board with a thickness of 0.035mm, in first
Interbed and the copper of the second middle layer with a thickness of 0.017mm；
The differential voltage sensed by electric dipole is switched to common-mode voltage by the integrated balun；The integrated balun is collection
It is not to be connect in a manner of the termination of outside with the tangential electric field probe at arriving in the tangential electric field probe；The integrated balun
It is the design based on power divider and 180 degree phase-shifter, the signal of power divider output becomes after 180 degree phase-shifter
Two constant amplitudes and the differential signal for having stable phase shift；
The tangential electric field tested is transferred to outside the tangential electric field by the transmission line, in order to which tested test instrument is connect
It receives；The transmission line is the co-planar waveguide and strip line group layer by having metal backing.
2. the tangential near field electrical field test probe in a kind of broadband suitable for GPS frequency range according to claim 1, feature exist
In: the length of each dipole arm is 4mm, and the spacing between two dipole arms is 0.4mm.
3. the tangential near field electrical field test probe in a kind of broadband suitable for GPS frequency range according to claim 1, feature exist
In: the line width of the strip line is 0.38mm, and characteristic impedance is 50 Ω, and impedance reference plane is top layer and bottom.
4. the tangential near field electrical field test probe in a kind of broadband suitable for GPS frequency range according to claim 1, feature exist
It is 0.44mm in: the line width of the co-planar waveguide with metal backing, characteristic impedance is 50 Ω, and impedance reference plane is located at the
One middle layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910396754.6A CN110133389A (en) | 2019-05-14 | 2019-05-14 | A kind of tangential near field electrical field test probe in broadband suitable for GPS frequency range |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910396754.6A CN110133389A (en) | 2019-05-14 | 2019-05-14 | A kind of tangential near field electrical field test probe in broadband suitable for GPS frequency range |
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| CN110133389A true CN110133389A (en) | 2019-08-16 |
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| CN201910396754.6A Pending CN110133389A (en) | 2019-05-14 | 2019-05-14 | A kind of tangential near field electrical field test probe in broadband suitable for GPS frequency range |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110824261A (en) * | 2019-10-21 | 2020-02-21 | 北京航空航天大学 | Active magnetic field probe adopting hybrid bias filter network |
| CN110927499A (en) * | 2019-12-10 | 2020-03-27 | 中国民航大学 | Radio frequency integrated circuit near field electromagnetic compatibility test equipment and test method thereof |
| CN112684253A (en) * | 2020-11-12 | 2021-04-20 | 西安交通大学 | Non-contact load impedance test system and working method thereof |
| CN113238098A (en) * | 2021-05-12 | 2021-08-10 | 厦门大学 | Wide-frequency electric field probe capable of simultaneously measuring double-component electric field |
| CN113702878A (en) * | 2021-08-04 | 2021-11-26 | 中国民航大学 | Miniaturized active differential magnetic field probe with high common-mode rejection ratio and high sensitivity |
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| CN107947741A (en) * | 2017-12-04 | 2018-04-20 | 中国电子科技集团公司第四十研究所 | A kind of wide band radio-frequency sampling frequency mixer and frequency mixing method |
| CN109521374A (en) * | 2018-10-18 | 2019-03-26 | 北京航空航天大学 | It is embedded in integrated balun and loads the tangential electric field probe of resonance of modified dipole |
-
2019
- 2019-05-14 CN CN201910396754.6A patent/CN110133389A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107947741A (en) * | 2017-12-04 | 2018-04-20 | 中国电子科技集团公司第四十研究所 | A kind of wide band radio-frequency sampling frequency mixer and frequency mixing method |
| CN109521374A (en) * | 2018-10-18 | 2019-03-26 | 北京航空航天大学 | It is embedded in integrated balun and loads the tangential electric field probe of resonance of modified dipole |
Non-Patent Citations (1)
| Title |
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| 赵龙: "射频仿真系统中宽带射频前端的研究", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110824261A (en) * | 2019-10-21 | 2020-02-21 | 北京航空航天大学 | Active magnetic field probe adopting hybrid bias filter network |
| CN110927499A (en) * | 2019-12-10 | 2020-03-27 | 中国民航大学 | Radio frequency integrated circuit near field electromagnetic compatibility test equipment and test method thereof |
| CN112684253A (en) * | 2020-11-12 | 2021-04-20 | 西安交通大学 | Non-contact load impedance test system and working method thereof |
| CN113238098A (en) * | 2021-05-12 | 2021-08-10 | 厦门大学 | Wide-frequency electric field probe capable of simultaneously measuring double-component electric field |
| CN113702878A (en) * | 2021-08-04 | 2021-11-26 | 中国民航大学 | Miniaturized active differential magnetic field probe with high common-mode rejection ratio and high sensitivity |
| CN113702878B (en) * | 2021-08-04 | 2024-03-29 | 中国民航大学 | High common mode rejection ratio and high sensitivity miniaturized active differential magnetic field probe |
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Application publication date: 20190816 |
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