CN205609750U - A superfrequency microstrip antenna that is used for GIS metal basin plug hole department - Google Patents
A superfrequency microstrip antenna that is used for GIS metal basin plug hole department Download PDFInfo
- Publication number
- CN205609750U CN205609750U CN201620179309.6U CN201620179309U CN205609750U CN 205609750 U CN205609750 U CN 205609750U CN 201620179309 U CN201620179309 U CN 201620179309U CN 205609750 U CN205609750 U CN 205609750U
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- microstrip
- antenna
- superfrequency
- plug hole
- metal basin
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- 239000002184 metal Substances 0.000 title claims abstract description 20
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 20
- 230000005855 radiation Effects 0.000 claims abstract description 28
- 239000000758 substrate Substances 0.000 claims description 28
- 239000000463 material Substances 0.000 claims description 8
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 description 9
- 230000005611 electricity Effects 0.000 description 5
- 239000004020 conductor Substances 0.000 description 3
- 239000012212 insulator Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Abstract
The utility model discloses a superfrequency microstrip antenna that is used for GIS metal basin plug hole department, including the medium base plate, medium base plate upper surface sets up semi -circular radiation fin, medium base plate lower surface sets up semi -circular earth lug and microstrip ba lun, the radiation fin through first microstrip line with microstrip ba lun connects, the earth lug pass through the second microstrip line with microstrip ba lun connects. The utility model discloses a microstrip line makes the frequency band exhibition of antenna wide with the ba lun structure, has good frequency response characteristic in 2.3GHz~3.6GHz frequency range. And because microstrip ba lun's joining makes the characteristic impedance of antenna be 50 ohm, can be directly and rear end circuit matching.
Description
Technical field
This utility model relates to high-tension electricity apparatus local discharge detection technique field, is specifically related to a kind of at GIS
The broadband semicircle micro-strip paster antenna of ultrahigh frequency electromagnetic wave signal is detected at metal disc insulator plug hole.
Background technology
Special (surpassing) high pressure equipment technical sophistication, its operational reliability affects the safe operation of electrical network, to ensureing national energy
Safety is significant.GIS is the visual plant of special (surpassing) high voltage substation, is to ensure that extra-high (surpassing) pressure engineering is properly functioning
Basis, once fault may cause spy's (surpassing) high-tension line (electrical network) off-the-line even full cut-off.Additionally, due to GIS fault is carried out
During unplanned interruption maintenance, not only needing a large amount of manpower and materials, also need longer maintenance time, this will bring huge economic damage
Lose, so before GIS breaks down, if it is possible to detect and judge its internal flaw situation, it appears particularly important.
Superfrequency method is to receive, by superfrequency sensor, the electromagnetic wave signal produced because of GIS partial discharge, it is achieved locally
The detection of electric discharge.At present, on market, superfrequency sensor is mainly used at the GIS disc insulator of unprotected becket detecting
Shelf depreciation, but recent years due in GIS device disc insulator have employed metal tape weather resisteant guard technology, according to electromagnetism
Theory of wave propagation, electromagnetic wave is propagated, through a gap or hole, the electromagnetic wave signal revealed and be there occurs bigger change on frequency spectrum
Changing, leakage signal spectral characteristic has substantial connection with the size in gap, and the influence of fading that the part that frequency is on the low side is subject to is maximum,
Cannot detect with this existing superfrequency sensor.
From the spectrum analysis of GIS slot leakage shelf depreciation it will be seen that the leakage frequency range in different size gap the most not
Equally, so what we needed is not only wide band antenna, it should be the antenna of a suitable frequency range targetedly.With
The most real shelf depreciation electromagnetic wave signal can more effectively be measured by the antenna of suitable frequency range, is used for analyzing putting in insulation
Electrical characteristics.
Utility model content
Problem to be solved in the utility model is to provide a kind of superfrequency micro-strip sky at GIS metal basin plug hole
Line, has preferable broadband character and can be used in ultrahigh-frequency signal reception, use microstrip transmission line and triangle microstrip balun
Line realizes impedance matching, it is possible to make antenna realize good mating with back-end circuit.
For solving above-mentioned technical problem, the technical solution adopted in the utility model is:
A kind of superfrequency microstrip antenna at GIS metal basin plug hole, including medium substrate, on described medium substrate
Surface configuration semicircle radiation fin, described medium substrate lower surface arranges semi-circular ground sheet and microstrip balun, described radiation fin
Being connected with described microstrip balun by the first microstrip line, described ground strip is connected with described microstrip balun by the second microstrip line.
Preferably, described radiation fin is tangent also with the projection in the plane parallel with described medium substrate of the described ground strip
Symmetrical.
Preferably, the material of described medium substrate is epoxy resin fiber, and its relative dielectric constant is。
Preferably, the thickness of described medium substrate is 1mm.
Preferably, described radiation fin is 16mm with the radius of described ground strip.
Preferably, a length of 25mm of described first microstrip line, a width of 3mm.
Preferably, a length of 12mm of described second microstrip line, a width of 3mm.
Preferably, described microstrip balun top is round platform vertical section structure, and a width of 3mm in upper end, a height of 10mm, lower end is a width of
23mm, described microstrip balun bottom is rectangular configuration, a height of 3mm, a width of 23mm.
This utility model uses half-round metal paster to be presented by the i.e. microstrip line of microstrip transmission line as radiation fin, radiation fin
Electricity, the length and width of microstrip transmission line is through being specifically designed.Another side at medium substrate uses an equal amount of one block of semicircle gold
Belong to paster place up and down with ground strip symmetry as ground strip, radiation fin, i.e. radiation fin with ground strip parallel with medium substrate
Plane in projection tangent and symmetrical.Ground strip is connected by microstrip transmission line with microstrip balun.By microstrip line and micro-strip
Balun is designed to make antenna realize impedance matching in corresponding band.Additionally the addition of microstrip balun is equivalent to asymmetric same
The imbalance transducer to balance is inserted between axis structure and antenna.I.e. can be by not by the appropriate design of microstrip balun
Balanced balanced current is converted into balanced balanced current, it is ensured that the performance of antenna.
This utility model makes the band spread of antenna by microstrip line and barron structure, in 2.3GHz ~ 3.6GHz frequency
In the range of have good frequency response characteristic.And owing to the addition of microstrip balun makes the characteristic impedance of antenna be 50 ohm,
Can directly mate with back-end circuit.Again due to microstrip balun structure be designed to out-of-balance current is converted into balance electricity
Stream, this microstrip antenna can use coaxial line direct feed, it is to avoid on the antenna that the unsymmetry of coaxial internal and external conductor is brought
CURRENT DISTRIBUTION is asymmetric such that the unmatched impact of antenna.
Accompanying drawing explanation
Below in conjunction with the accompanying drawings this utility model is further described:
Fig. 1 is the structural representation of this utility model superfrequency microstrip antenna at GIS metal basin plug hole；
Fig. 2 is the structural representation of this utility model upper antenna surface；
Fig. 3 is the structural representation of this utility model lower antenna surface；
Fig. 4 is the return loss plot of the antenna under this utility model HFSS emulation；
Fig. 5 is the standing-wave ratio figure of the antenna under this utility model HFSS emulation；
Fig. 6 is the input impedance figure of the antenna under this utility model HFSS emulation；
Fig. 7 is this utility model antenna 3 D stereo gain pattern；
Fig. 8 is the return loss plot of the antenna under this utility model material object runs；
Fig. 9 is the standing-wave ratio figure of the antenna under this utility model material object runs；
Figure 10 is the input impedance figure of the antenna under this utility model material object runs.
Detailed description of the invention
Below in conjunction with Fig. 1 to Figure 10 displaying further to technical solutions of the utility model, detailed description of the invention is as follows:
Embodiment one
Present embodiments provide a kind of superfrequency microstrip antenna at GIS metal basin plug hole, including medium substrate
1, described medium substrate 1 upper surface arranges semicircle radiation fin 2, and described medium substrate 1 lower surface arranges semi-circular ground sheet 3 He
Microstrip balun 5, described radiation fin 2 is connected with described microstrip balun 5 by the first microstrip line 4, and described ground strip 3 is micro-by second
Band wire 6 is connected with described microstrip balun 5.
Preferably, described radiation fin 2 and the described ground strip 3 projection phase in the plane parallel with described medium substrate 1
Cut and symmetrical.
This utility model uses half-round metal paster to be presented by the i.e. microstrip line of microstrip transmission line as radiation fin, radiation fin
Electricity, the length and width of microstrip transmission line is through being specifically designed.Another side at medium substrate uses an equal amount of one block of semicircle gold
Belong to paster place up and down with ground strip symmetry as ground strip, radiation fin, i.e. radiation fin with ground strip parallel with medium substrate
Plane in projection tangent and symmetrical.Ground strip is connected by microstrip transmission line with microstrip balun.By microstrip line and micro-strip
Balun is designed to make antenna realize impedance matching in corresponding band.Additionally the addition of microstrip balun is equivalent to asymmetric same
The imbalance transducer to balance is inserted between axis structure and antenna.I.e. can be by not by the appropriate design of microstrip balun
Balanced balanced current is converted into balanced balanced current, it is ensured that the performance of antenna.
This utility model makes the band spread of antenna by microstrip line and barron structure, in 2.3GHz ~ 3.6GHz frequency
In the range of have good frequency response characteristic.And owing to the addition of microstrip balun makes the characteristic impedance of antenna be 50 ohm,
Can directly mate with back-end circuit.Again due to microstrip balun structure be designed to out-of-balance current is converted into balance electricity
Stream, this microstrip antenna can use coaxial line direct feed, it is to avoid on the antenna that the unsymmetry of coaxial internal and external conductor is brought
CURRENT DISTRIBUTION is asymmetric such that the unmatched impact of antenna.
Embodiment two
As described in Figure 1: present embodiments provide a kind of superfrequency microstrip antenna at GIS metal basin plug hole, bag
Including medium substrate 1, described medium substrate 1 upper surface arranges semicircle radiation fin 2, and described medium substrate 1 lower surface arranges semicircle
Shape ground strip 3 and microstrip balun 5, described radiation fin 2 is connected with described microstrip balun 5 by the first microstrip line 4, described ground strip
3 are connected with described microstrip balun 5 by the second microstrip line 6.Described radiation fin 2 and described ground strip 3 with described medium substrate 1
The parallel projection in plane is tangent and symmetrical.The present embodiment semicircle microstrip antenna uses the FR4 material conduct of 66*48*1mm
The material of medium substrate 1 described in medium substrate is epoxy resin fiber, and its relative dielectric constant is.Described medium base
The thickness of plate 1 is 1mm.Upper and lower surface at medium substrate etches two symmetrical semicircular patch antennas respectively.Fig. 1 medium
It is that radiation patch is connected with microstrip line above sheet, passes through feed microstrip line.Fig. 1 medium sheet is presented herein below ground patch and micro-strip bar
Human relations are connected.Microstrip line connects with coaxial line heart, and microstrip balun connects with coaxial outer conductor, so can be by out-of-balance current
It is converted into balanced balanced current, it is achieved impedance matching.
Fig. 2 and Fig. 3 is that the concrete structure to medium substrate upper and lower surface is shown:
Described radiation fin 2 is 16mm with the radius of described ground strip 3.
A length of 25mm, a width of 3mm of described first microstrip line 4.
A length of 12mm, a width of 3mm of described second microstrip line 6.
Described microstrip balun 5 top is round platform vertical section structure, a width of 3mm in upper end, a height of 10mm, a width of 23mm in lower end,
Described microstrip balun 5 bottom is rectangular configuration, a height of 3mm, a width of 23mm.
Fig. 4 is the return loss of the semicircle antenna obtained by HFSS emulation, it appeared that at 2.3GHz ~ 3.6GHz frequency
In the range of rate, the return loss of inventive antenna is at below-10dB.
Fig. 5 is the standing-wave ratio of the semicircle antenna obtained by HFSS emulation, it appeared that in 2.3GHz ~ 3.6GHz frequency
In the range of, the standing-wave ratio of inventive antenna is less than 2.0.
In electromagnetic transmission theory, but when return loss is less than 2.0 less than-10dB or standing-wave ratio, antenna transmission energy
Power more than 89%, this time, the impact of standing wave can not consider further that.Meet the frequency range of the standard of these electrical quantitys
Being working frequency range, its bandwidth is referred to as the beamwidth of antenna.As can be seen from the figure the working frequency range of the present invention is at 2.3GHz ~ 3.6GHz
In frequency range.
If Fig. 6 is the input impedance of antenna, it will be seen that the input resistance of antenna exists in the band limits meeting condition
50 ohms, reaction component is at 0 ohms.Such input impedance is easy to detect equipment with rear end in engineer applied
Coupling.
Fig. 7 is the 3 D stereo gain pattern of aerial radiation, depicts antenna radiation characteristics visually with space coordinates
The relation of change.
Fig. 8 to Figure 10 is that the semicircle antenna according to design size actual fabrication utilizes Agilent vector network analyzer
Return loss that Agilent Techologies N5230 records, standing-wave ratio, input impedance.Test result shows that this antenna exists
There is in 2.3GHz ~ 3.8GHz frequency range good frequency response characteristic, meet the test request in engineering, say, that
In this test frequency range, the local discharge signal credibility of gained is that comparison is high.This beamwidth of antenna refers to when operating frequency changes
Time, the satisfactory scope of relevant performance parameter of antenna.The absolute bandwidth 1.5GHz of this antenna, relative bandwidth 49.2%, frequency multiplication
Bandwidth 1.65, in 2.3GHz ~ 3.8GHz frequency band, return loss is less than-10dB, and voltage standing wave ratio (VSWR) is less than 2, with emulation
The parametric results of antenna is basically identical.
Figure 10 is the distribution of impedance circle diagram of semicircle antenna, antenna in the range of effective band 2.3GHz ~ 3.8GHz around
50 ohm point are shunk, and this point can illustrate that the impedance of semicircle antenna has well coupling in this frequency range.
Finally illustrate, above example only in order to the technical solution of the utility model to be described and unrestricted, this area
Other amendment or equivalents that the technical solution of the utility model is made by those of ordinary skill, without departing from this practicality
The spirit and scope of new technique scheme, all should contain in the middle of right of the present utility model.
Claims (8)
1. the superfrequency microstrip antenna at GIS metal basin plug hole, it is characterised in that: include medium substrate, described
Medium substrate upper surface arranges semicircle radiation fin, and described medium substrate lower surface arranges semi-circular ground sheet and microstrip balun,
Described radiation fin is connected with described microstrip balun by the first microstrip line, and described ground strip is by the second microstrip line and described micro-strip
Balun connection.
2. the superfrequency microstrip antenna at GIS metal basin plug hole as claimed in claim 1, it is characterised in that: described
Radiation fin is tangent and symmetrical with the projection in the plane parallel with described medium substrate of the described ground strip.
3. the superfrequency microstrip antenna at GIS metal basin plug hole as claimed in claim 1, it is characterised in that: described
The material of medium substrate is epoxy resin fiber, and its relative dielectric constant is。
4. the superfrequency microstrip antenna at GIS metal basin plug hole as claimed in claim 3, it is characterised in that: described
The thickness of medium substrate is 1mm.
5. the superfrequency microstrip antenna at GIS metal basin plug hole as claimed in claim 1, it is characterised in that: described
Radiation fin is 16mm with the radius of described ground strip.
6. the superfrequency microstrip antenna at GIS metal basin plug hole as claimed in claim 1, it is characterised in that: described
A length of 25mm of the first microstrip line, a width of 3mm.
7. the superfrequency microstrip antenna at GIS metal basin plug hole as claimed in claim 1, it is characterised in that: described
A length of 12mm of the second microstrip line, a width of 3mm.
8. the superfrequency microstrip antenna at GIS metal basin plug hole as claimed in claim 1, it is characterised in that: described
Microstrip balun top is round platform vertical section structure, a width of 3mm in upper end, a height of 10mm, and a width of 23mm in lower end, under described microstrip balun
Portion is rectangular configuration, a height of 3mm, a width of 23mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620179309.6U CN205609750U (en) | 2016-03-09 | 2016-03-09 | A superfrequency microstrip antenna that is used for GIS metal basin plug hole department |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620179309.6U CN205609750U (en) | 2016-03-09 | 2016-03-09 | A superfrequency microstrip antenna that is used for GIS metal basin plug hole department |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205609750U true CN205609750U (en) | 2016-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620179309.6U Expired - Fee Related CN205609750U (en) | 2016-03-09 | 2016-03-09 | A superfrequency microstrip antenna that is used for GIS metal basin plug hole department |
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| Country | Link |
|---|---|
| CN (1) | CN205609750U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771931A (en) * | 2017-01-22 | 2017-05-31 | 国网河南省电力公司检修公司 | A kind of extra-high video sensor at GIS metal basin plug holes |
| CN109921181A (en) * | 2019-04-10 | 2019-06-21 | 西南交通大学 | A kind of bilayer butterfly antenna |
| CN113422200A (en) * | 2021-07-05 | 2021-09-21 | 江苏方天电力技术有限公司 | Back reflection multi-frequency-point hollow built-in antenna and design method thereof |
| CN109921181B (en) * | 2019-04-10 | 2024-05-14 | 西南交通大学 | Double-layer butterfly antenna |
-
2016
- 2016-03-09 CN CN201620179309.6U patent/CN205609750U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771931A (en) * | 2017-01-22 | 2017-05-31 | 国网河南省电力公司检修公司 | A kind of extra-high video sensor at GIS metal basin plug holes |
| CN109921181A (en) * | 2019-04-10 | 2019-06-21 | 西南交通大学 | A kind of bilayer butterfly antenna |
| CN109921181B (en) * | 2019-04-10 | 2024-05-14 | 西南交通大学 | Double-layer butterfly antenna |
| CN113422200A (en) * | 2021-07-05 | 2021-09-21 | 江苏方天电力技术有限公司 | Back reflection multi-frequency-point hollow built-in antenna and design method thereof |
| CN113422200B (en) * | 2021-07-05 | 2023-11-10 | 江苏方天电力技术有限公司 | Back reflection multi-frequency-point hollowed-out built-in antenna and design method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160928 Termination date: 20170309 |