CN107611594A - A kind of new Archimedian screw directional aerial - Google Patents
A kind of new Archimedian screw directional aerial Download PDFInfo
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- CN107611594A CN107611594A CN201710573149.2A CN201710573149A CN107611594A CN 107611594 A CN107611594 A CN 107611594A CN 201710573149 A CN201710573149 A CN 201710573149A CN 107611594 A CN107611594 A CN 107611594A
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Abstract
The invention belongs to ultra-wideband antenna design field, there is provided a kind of new Archimedian screw directional aerial, preferably to take into account performance requirement of the Archimedian spiral antenna in miniaturization, broadband, high directionality and high radiation efficiency；Inventive antenna includes medium substrate, antenna arm, filled and process, absorbing material, metallic enclosure, feed Balun and coaxial fitting, antenna arm is that the circular antenna piece 32 being outwards sequentially connected by center the two-arm antenna piece that shape antenna sheet forms in shape antenna sheet 4 of shape antenna sheet 8, the spiral growth rate of shape antenna sheet in shape antenna sheet and 4 of shape antenna sheet, 8 at shape antenna sheet, 16 of circular antenna piece, 32 in shape antenna sheet 16 are incremented by successively.Inventive antenna has good broadband character, can effectively reduce the size of antenna, reduces the antenna number of turns, so as to reduce transmission loss and lift the efficiency of antenna, and have good far-field pattern and good directionality.
Description
Technical field
The invention belongs to ultra-wideband antenna design field, and in particular to a kind of new Archimedian screw directional aerial.
Background technology
Ultra-wideband antenna is with the bandwidth characteristic of its ultra-wide and is widely applied scope, causes the pass of countries in the world scholar
Note and research, particularly in ULTRA-WIDEBAND RADAR, missile guidance and the communications field, ultra-wideband antenna is one of its key technology.
In frequency domain stepping radar system, if thinking the properties of raising system, the lifting beamwidth of antenna is one good
Breach, using the frequency domain stepping radar system of ultra-wideband antenna, the bandwidth of antenna and the resolution ratio of system are within the specific limits
It is directly proportional, for example in frequency domain stepping ground penetrating radar system, lifts the beamwidth of antenna, broadening system frequency stepping scope is to carry
Rise a kind of good means of resolution ratio.In missile guidance field, particularly antiradiation missile, the bandwidth of antenna is wider, and its is right
The coverage of radiation signal is wider, so as to which when carrying out precision strike to radar target, effect is also more obvious, if antenna
Bandwidth it is sufficiently wide, then using the same antenna antiradiation missile can to various radar carry out precision strike, therefore study ultra-wide
Band antenna has extremely important military value.In the communications field, particularly safe and secret communication, if using frequency hopping, that
One ultra-wideband antenna of good performance is extremely important for him.
Though traditional Archimedian spiral antenna possesses the bandwidth of ultra-wide, there is also it is more the problem of：First it
It is the circular polarized antenna of bidirectional radiation, but one-way radiation is often required that in current demand；Secondly, based on its radiation theory, most
Small radiation frequency is related with maximum radius, and greatest irradiation frequency is related to least radius, and day will often be increased by reducing minimum frequency
Linear dimension, particularly often there is higher requirement to antenna size in the case where frequency is relatively low in actual applications；Furthermore will
The bandwidth of extended antenna, it will increase the number of turns of antenna, the number of turns is more, and transmission loss is also bigger, so as to influence the effect of antenna
Rate.At present, Archimedian spiral antenna mainly uses two kinds of structures, it is a kind of be it is square, it is a kind of be it is circular, based on can band reason
When electromagnetic wavelength being occurred mainly in by radiation areas and is equal to circumference circle, thus it is square more circular in the suitable time-frequency of size
Rate can reduce by 2 2% or so, but relative to the Archimedian spiral antenna of circle, square Archimedian spiral antenna axle ratio
Performance can be weaker；Therefore, a kind of miniaturization, broadband, high directionality, the new Archimedian screw of high radiation efficiency are developed
Antenna is urgent need to resolve problem.
The content of the invention
In view of the above-mentioned problems, it is an object of the invention to provide a kind of new Archimedian screw directional aerial, to more
Good takes into account performance requirement of the Archimedian spiral antenna in miniaturization, broadband, high directionality and high radiation efficiency, the antenna
Working frequency is 200MHz~1600MHz.
To achieve the above object, the present invention takes following technical scheme：
A kind of new Archimedian screw directional aerial, including medium substrate 1, antenna arm 2, filled and process 3, absorbing material
4th, metallic enclosure 5, feed Balun 6 and coaxial fitting 7, it is characterised in that the antenna arm is outwards to be sequentially connected by center
Circular antenna piece -32 in shape antenna sheet -16 shape antenna sheet -8 in shape antenna sheet -4 shape antenna sheet form two-arm antenna
Piece, the spiral of the shape antenna sheet in shape antenna sheet and 4 of shape antenna sheet, 8 at shape antenna sheet, 16 of the circular antenna piece, 32 increase
Long rate is enclosed incremented by successively with stepping 2mm-5mm/.
Further, the number of turns of the circular antenna piece is not less than 3 not less than 4 circles, the number of turns of the 32 side shape antenna sheet
Circle, the number of turns of the 16 side shape antenna sheet is not less than 3 circles, and the number of turns of the 8 side shape antenna sheet is not less than 2 circles, the 4 side shape day
The number of turns of line piece is not less than 2 circles.
The antenna arm line width is 1 with gap width ratio：1 to 3：Between 1.
Further, in the Archimedian screw directional aerial, the antenna arm 2 is arranged on medium substrate 1, institute
State medium substrate 1 to be arranged at the top of metallic enclosure 5, collectively form absorbing cavity with metallic enclosure 5, the absorbing cavity coating is inhaled
Wave material 4, filled and process 3, the medium are provided between the absorbing material 4 and metallic enclosure 5 and in absorbing cavity
Substrate 1, filled and process 3, the center of absorbing material 4 are provided with air via, and the feed Balun 6 passes through air via
Antenna arm 2 is connected with coaxial fitting 7 realization electrical connection.
Due to taking above technical scheme, its advantage is the present invention：
1) in inventive antenna, antenna arm is using the circular form for arriving square transition, in the case where meeting antenna axial ratio
Effectively reduce the size of antenna；
2) in inventive antenna, the shape in shape antenna sheet -4 of shape antenna sheet -8 in shape antenna sheet -16 of circular antenna piece -32
In the two-arm antenna piece of antenna sheet transition, spiral growth rate uses incremental manner, effectively reduces the antenna number of turns, so as to reduce transmission
Loss, lift the efficiency of antenna；
3) in inventive antenna, the bifilar helical growth rate using rational transition, rational antenna causes aerial radiation
Good matching is realized from inside to outside in region；
4) inventive antenna has good far-field pattern, is used using rounded transitional to square structure and back
Absorbing cavity causes antenna all to keep preferable waveform from high frequency to low frequency；
5) inventive antenna has good directionality, in antenna sheet back designs absorbing cavity, by the backward radiation of antenna
Energy absorption is fallen, and realizes one-way radiation, and longitudinal size is far smaller than traditional reflection cavity.
Brief description of the drawings
Fig. 1 is the new Archimedian screw directional antenna arrangement diagrammatic cross-section of the present invention；Wherein, 1 is medium substrate, 2
It is filled and process for antenna arm, 3,4 be absorbing material, 5 be metallic enclosure, 6 be matching balun, 7 is coaxial fitting.
Fig. 2 is the new Archimedian screw directional antenna arrangement schematic top plan view of the present invention；Wherein, A segment tables show circular day
Line piece, B segment tables show 32 side shape antenna sheets, and C segment tables show 16 side shape antenna sheets, and D segment tables show 8 side shape antenna sheets, and E segment tables show 4 side shapes
Antenna sheet.
Fig. 3 is return loss (S11) curve map of new Archimedian screw directional aerial in the embodiment of the present invention.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
The present embodiment provides a kind of new Archimedian screw directional aerial, and its structure is as shown in Fig. 2 including including medium
Substrate 1, antenna arm 2, filled and process 3, absorbing material 4, metallic enclosure 5, feed Balun 6 and coaxial fitting 7, the A Ji
In Mead helical-beam antenna, the antenna arm 2 is arranged on medium substrate 1, and the medium substrate 1 is arranged at metallic enclosure
5 tops, absorbing cavity, the absorbing cavity Coated With Absorbing Material 4, the absorbing material 4 and gold are collectively formed with metallic enclosure 5
Filled and process 3, the medium substrate 1, filled and process 3, absorbing material 4 are provided between category shielding cavity 5 and in absorbing cavity
Center be provided with air via, antenna arm 2 is connected by the feed Balun 6 by air via with coaxial fitting 7
Realize electrical connection；The antenna arm be by the circular antenna piece -32 that center is outwards sequentially connected in shape antenna sheet -16 shape antenna
The two-arm antenna piece that shape antenna sheet forms in shape antenna sheet -4 of piece -8, the circular antenna piece, 32 are at shape antenna sheet, 16
The spiral growth rate of shape antenna sheet in shape antenna sheet and 4 of shape antenna sheet, 8 is incremented by successively with stepping；As shown in Figure 2.
In the present embodiment, medium substrate 1 uses FR-4 or similar electrical parameter dielectric constant dielectric substrate；Feed Balun
6 use the matching balun of non-equilibrium-balance, can realize preferable matching so that in 100MHz~16000MHz frequency band model
Enclose interior return loss and be less than -10dB；The antenna width of two-arm antenna piece is 3mm, start radius 3mm, maximum radius 240
Mm, i.e. antenna both arms size are：480mm × 480mm, both arms are made up of five regions of A, B, C, D, E, a-quadrant：It is shaped as justifying
Shape, the number of turns are 5 circles, and the growth rate of spiral is enclosed for 12mm/, B domains：32 side shapes are shaped as, the number of turns is 4 circles, and the growth rate of spiral is
14mm/ is enclosed, C regions：16 side shapes are shaped as, the number of turns is 3 circles, and the growth rate of spiral is enclosed for 16mm/, D regions：It is shaped as 8 sides
Shape, the number of turns are 2 circles, and the growth rate of spiral is enclosed for 18mm/, E regions：4 side shapes are shaped as, the number of turns is 2 circles, and the growth rate of spiral is
20mm/ is enclosed；I.e. the growth stepping of spiral growth rate is enclosed for 2mm/.
Above-mentioned Archimedian screw directional aerial is emulated, its result is as shown in figure 3, it emulates clawback loss
(S11) curve map, return loss is less than -10dB in 100MHz~1600MHz frequency band ranges, shows that antenna has well
Broadband character.
The foregoing is only a specific embodiment of the invention, any feature disclosed in this specification, except non-specifically
Narration, can alternative features equivalent by other or with similar purpose replaced；Disclosed all features or all sides
Method or during the step of, in addition to mutually exclusive feature and/or step, can be combined in any way.
Claims (4)
1. a kind of new Archimedian screw directional aerial, including medium substrate (1), antenna arm (2), filled and process (3), suction ripple
Material (4), metallic enclosure (5), feed Balun (6) and coaxial fitting (7), it is characterised in that the antenna arm is by center
The circular antenna piece -32 being outwards sequentially connected shape antenna sheet group in shape antenna sheet -4 of shape antenna sheet -8 in shape antenna sheet -16
Into two-arm antenna piece, the shape day in shape antenna sheet and 4 of shape antenna sheet, 8 at shape antenna sheet, 16 of the circular antenna piece, 32
The spiral growth rate of line piece is enclosed incremented by successively with stepping 2mm~5mm/.
2. the Archimedian screw directional aerial as described in claim 1, it is characterised in that the number of turns of the circular antenna piece is not small
In 4 circles, the number of turns of the 32 side shape antenna sheet is not less than 3 circles, and the number of turns of the 16 side shape antenna sheet is not less than 3 circles, 8 side
For the number of turns of shape antenna sheet not less than 2 circles, the number of turns of the 4 side shape antenna sheet is not less than 2 circles.
3. the Archimedian screw directional aerial as described in claim 1, it is characterised in that the antenna arm line width and gap width
Than for 1：1 to 3：Between 1.
4. press any Archimedian screw directional aerial of claims 1 to 3, it is characterised in that the Archimedian screw
In directional aerial, the antenna arm (2) is arranged on medium substrate (1), and the medium substrate (1) is arranged at metallic enclosure
(5) top and metallic enclosure collectively form absorbing cavity, the absorbing cavity Coated With Absorbing Material (4), the absorbing material (4)
Filled and process (3), the medium substrate (1), filled and process are provided between metallic enclosure (5) and in absorbing cavity
(3) and the center of absorbing material (4) is provided with air via, and the feed Balun (6) is by air via by antenna
Arm (2) is connected with coaxial fitting (7) realizes electrical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710573149.2A CN107611594A (en) | 2017-07-14 | 2017-07-14 | A kind of new Archimedian screw directional aerial |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710573149.2A CN107611594A (en) | 2017-07-14 | 2017-07-14 | A kind of new Archimedian screw directional aerial |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107611594A true CN107611594A (en) | 2018-01-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710573149.2A Pending CN107611594A (en) | 2017-07-14 | 2017-07-14 | A kind of new Archimedian screw directional aerial |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112701463A (en) * | 2020-12-17 | 2021-04-23 | 国家电网有限公司 | Combined antenna structure based on circular and rectangular spirals |
| CN116995433A (en) * | 2023-08-03 | 2023-11-03 | 中国民航大学 | Ultra-wideband planar spiral antenna based on microwave cerebral apoplexy detection |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1917285A (en) * | 2006-09-06 | 2007-02-21 | 上海集成电路研发中心有限公司 | Antenna structure on IC and manufacturing method |
| CN201623259U (en) * | 2009-12-30 | 2010-11-03 | 中国电子科技集团公司第三十六研究所 | Composite loaded plane helical antenna |
| WO2013096867A1 (en) * | 2011-12-23 | 2013-06-27 | Trustees Of Tufts College | System method and apparatus including hybrid spiral antenna |
| CN103956581A (en) * | 2014-04-28 | 2014-07-30 | 中国人民解放军空军工程大学 | Method for manufacturing Archimedes helical antenna |
-
2017
- 2017-07-14 CN CN201710573149.2A patent/CN107611594A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1917285A (en) * | 2006-09-06 | 2007-02-21 | 上海集成电路研发中心有限公司 | Antenna structure on IC and manufacturing method |
| CN201623259U (en) * | 2009-12-30 | 2010-11-03 | 中国电子科技集团公司第三十六研究所 | Composite loaded plane helical antenna |
| WO2013096867A1 (en) * | 2011-12-23 | 2013-06-27 | Trustees Of Tufts College | System method and apparatus including hybrid spiral antenna |
| CN103956581A (en) * | 2014-04-28 | 2014-07-30 | 中国人民解放军空军工程大学 | Method for manufacturing Archimedes helical antenna |
Non-Patent Citations (2)
| Title |
|---|
| 丁孝翔: "宽带圆极化定向微带印制天线研究", 《中国优秀硕士学位论文全文数据库（电子期刊）》 * |
| 费元春: "《超宽带雷达理论与技术》", 31 August 2010 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112701463A (en) * | 2020-12-17 | 2021-04-23 | 国家电网有限公司 | Combined antenna structure based on circular and rectangular spirals |
| CN116995433A (en) * | 2023-08-03 | 2023-11-03 | 中国民航大学 | Ultra-wideband planar spiral antenna based on microwave cerebral apoplexy detection |
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Application publication date: 20180119 |
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| RJ01 | Rejection of invention patent application after publication |