CN105261828B - More line width gradual change Archimedian spiral antennas and its implementation - Google Patents
More line width gradual change Archimedian spiral antennas and its implementation Download PDFInfo
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- CN105261828B CN105261828B CN201510746503.8A CN201510746503A CN105261828B CN 105261828 B CN105261828 B CN 105261828B CN 201510746503 A CN201510746503 A CN 201510746503A CN 105261828 B CN105261828 B CN 105261828B
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Abstract
The invention discloses more line width gradual change Archimedian spiral antennas and its implementation.The present invention can expand the working band scope of Archimedian spiral antenna, make Archimedian spiral antenna being capable of Net long wave radiation electromagnetic wave in superwide range.The present invention expands the band bandwidth of Archimedian spiral antenna using multigroup gradual change spiral line width structure, make Archimedian spiral antenna small in superwide range inner port impedance variations, antenna pattern is good, and can reach the yield value of general broadband Archimedian spiral antenna in low-band gain.Multigroup gradual change spiral line width structure that the present invention uses makes Archimedian spiral antenna working band more than 30 octaves, and antenna can realize good directional diagram, gain and standing wave performance in the range of working band, the present invention replaces the function that original multiple Archimedes's antennas are realized with an antenna, the quantity and size of antenna when ultrabroad band uses are reduced, while has saved cost.
Description
Technical field
The invention belongs to Passive Detention System field of microwave antennas, more particularly to a kind of ultra wide band Archimedian spiral antenna
Design and its implementation.
Background technology
With developing rapidly for the technologies such as electronics, communication, radar, the working band of whole electronic system is more and more wider, day
Line is increasing to the demand of broad-band antenna as the carrier for radiating and receiving electromagnetic wave.Earliest Archimedian spiral antenna
Nineteen fifties are appeared in, its Net long wave radiation region changes with the change of frequency, therefore can be very wide
Worked in frequency band range.Archimedian spiral antenna has a compact-sized, in light weight, low cost and other advantages simultaneously, thus its
The fields such as passive detection, satellite communication obtain a wide range of applications.
In passive detection field, the working band of system is all very wide, and antenna part is generally by multiple frequency range polytypes
Antenna forms.If a kind of all channel antenna can be designed, it can cover the scope that original several antennas could cover, then not
It is only capable of the volume of reduction system, moreover it is possible to reduce the cost of antenna.Therefore design bandwidth, while electrical property meets the A Ji of requirement
Mead helical antenna, there is extremely important meaning for Passive Detention System.
The content of the invention
The invention aims to expand the working band of Archimedian spiral antenna, enable Archimedian spiral antenna
It is enough to realize good directional diagram, gain in the range of the even more big octave of 30 octaves.
The present invention is that solution is used by solving its technical problem：A Ji meter is determined according to the working band of antenna
The internal-and external diameter of moral spiral radiator, using the traditional Archimedian spiral antenna of multigroup gradual change spiral line width structure of modification, reduce
Excessive winding turns caused by original single line width, its innermost layer line width must adapt to high-frequency work, and outermost layer line width must adapt to low
Frequency works, and for other line width values between inside and outside line width, total winding turns can cover low frequency spoke between 20-30
Size requirement is penetrated, while utilizes the line width and each group helix of electromagnetic simulation software HFSS/CST analysis optimizations multigroup helixes
Winding turns.Multigroup gradual change spiral line width structure only needs to transform traditional single line width helix structure, you can in an antenna
On realize the frequency bandwidth that several helical antennas can be only achieved, by originally by the function that multiple antennas are realized by an antenna generation
Replace, reduce superwide range internal antenna quantity and size on the whole, while saved cost.
Compared with prior art, its remarkable advantage is the present invention：(1) Archimedian spiral antenna working band can reach 30
Octave；(2) Archimedian spiral antenna antenna pattern in the range of 30 octaves is good；(3) individual antenna instead of more
Individual traditional Archimedian spiral antenna, reduces antenna amount and installing space, while saved processing cost on the whole.
The present invention is described in further detail below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is multigroup gradual change spiral line width structure Archimedian screw radiator；
Fig. 2 is micro-strip exponential fade feed Balun；
Fig. 3 is the antenna pattern of 0.4GHz Archimedian spiral antennas；
Fig. 4 is the antenna pattern of 2GHz Archimedian spiral antennas；
Fig. 5 is the antenna pattern of 8GHz Archimedian spiral antennas；
Fig. 6 is the antenna pattern of 12GHz Archimedian spiral antennas.
Embodiment
The present invention proposes a kind of more line width gradual change Archimedian spiral antennas and its implementation, specific implementation step
For：
(1) the working band scope of antenna is determined：fmin-fmax；
(2) internal-and external diameter of antenna spiral radiator is determined：2πrmax≤1.25λmax, rmin≤λmin/8(λmaxFor low frequency fmin
Corresponding wavelength, λminFor high frequency fmaxCorresponding wavelength, rmaxFor the outermost radius of spiral radiator, rminFor spiral radiator
Start radius)；
(3) multigroup gradual change line width structure spiral radiator is designed：
Spiral starting line width W is determined according to Antenna Operation high frequency1；Helix termination line width is determined according to Antenna Operation low frequency
Wn(n is multigroup line width sum)；
According to helical antenna external diameter rmax, starting line width W1, terminate line width Wn, determine W2To Wn-1And n values, and make spiral
The line of line is around the number of turns between 20-30；
According to above parameter, Archimedian screw radiator model is established using electromagnetic simulation software HFSS/CST, is imitated
True optimization line width W1To WnSpiral radiator winding turns corresponding to value and different line widths；
(4) micro-strip exponential fade feed Balun is designed：
Microstrip line line width is calculated according to spiral radiator port Impedance；
Using exponential equation y=a × ebx+ c × (a, b, c are constant to x design exponential fades balun, and its numerical value is by base
Plate material, length and balun both ends port Impedance determine)；
(5) installation cavity according to corresponding to multigroup gradual change line width spiral radiator, the design of micro-strip exponential fade balun；Ultra wide band
Archimedian spiral antenna working band reaches 30 octaves, and in order to keep its broadband character, inside cavity filling microwave is inhaled
Wave material.
The more line width gradual change Archimedian spiral antennas for designing to obtain according to the above method, multigroup gradual change helical antenna line width
Stepping increase from inside to outside, innermost layer line width determine that outermost layer line width is according to the low of working band according to the high frequency of working band
Frequency determines that other line widths are between two line widths, and total winding turns of a variety of gradual change spiral line widths are between 20-30.
Example：
Multigroup wide Archimedian spiral antenna working band of transition line the wide line is 0.4GHz-12GHz's；Spiral radiator is adopted
It is made up of by the use of Arlon AD255 as sheet material, dielectric constant 2.55, thickness 1.016mm, spiral radiator four groups of line widths, from interior
It is respectively W to outer each line width1=0.6mm, W2=0.9mm, W3=1.5mm, W4=2.2mm, helix are 28 around number of total coils；It is micro-
Band balun is using Rogers RO4350B as sheet material, dielectric constant 3.48, dielectric substrate thickness 1.524mm, according to impedance
Matching requires that microstrip balun upper strata metal both ends line width is respectively 0.8mm and 3.6mm, two end lines of microstrip balun lower metal ground
Width is respectively 0.8mm and 30mm；Fig. 3 is the antenna pattern of 0.4GHz Archimedian spiral antennas；Fig. 4 is 2GHz Archimedes
The antenna pattern of helical antenna；Fig. 5 is the antenna pattern of 8GHz Archimedian spiral antennas；Fig. 6 is 12GHz Archimedes
The antenna pattern of helical antenna.
Claims (1)
- The gradual change Archimedian spiral antenna implementation method of line width more than 1., it is characterized in that：Step 1：Determine the working band scope of antenna：fmin-fmax；Step 2：Determine the internal-and external diameter of antenna spiral radiator：2πrmax≤1.25λmax, rmin≤λmin/ 8, wherein λmaxFor low frequency fminCorresponding wavelength, λminFor high frequency fmaxCorresponding wavelength, rmaxFor the outermost radius of spiral radiator, rminFor spiral radiation The start radius of device；Step 3：Design multigroup gradual change line width structure spiral radiator：(1) spiral starting line width W is determined according to Antenna Operation high frequency1；Helix termination line width W is determined according to Antenna Operation low frequencynIts Middle n is multigroup line width sum；(2) according to helical antenna external diameter rmax, starting line width W1, terminate line width Wn, determine W2To Wn-1And n Value, and make the line of helix around the number of turns between 20-30；(3) according to above parameter, electromagnetic simulation software HFSS/CST is utilized Establish Archimedian screw radiator model, simulation optimization line width W1To WnSpiral radiator coiling corresponding to value and different line widths The number of turns；Step 4：Design micro-strip exponential fade feed Balun：(1) microstrip line line width is calculated according to spiral radiator port Impedance；(2) exponential equation y=a × e is usedbx+ c × x designs Exponential fade balun, wherein a, b, c are constant, and its numerical value is determined by baseplate material, length and balun both ends port Impedance；Step 5：According to installation cavity corresponding to multigroup gradual change line width spiral radiator, the design of micro-strip exponential fade balun；Ultra wide band Archimedian spiral antenna working band reaches 30 octaves, and in order to keep its broadband character, inside cavity filling microwave is inhaled Wave material.
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| CN201510746503.8A CN105261828B (en) | 2015-11-05 | 2015-11-05 | More line width gradual change Archimedian spiral antennas and its implementation |
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| CN201510746503.8A CN105261828B (en) | 2015-11-05 | 2015-11-05 | More line width gradual change Archimedian spiral antennas and its implementation |
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| CN105261828A CN105261828A (en) | 2016-01-20 |
| CN105261828B true CN105261828B (en) | 2017-11-24 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108110411A (en) * | 2017-11-29 | 2018-06-01 | 上海无线电设备研究所 | A kind of ultra wide band circular polarisation combined antenna of line width gradual change |
| CN108232447B (en) * | 2018-02-28 | 2023-09-15 | 中国人民解放军国防科技大学 | Impedance converter for self-compensating structure antenna |
| CN112397890B (en) * | 2020-10-26 | 2022-04-08 | 中国电子科技集团公司第二十九研究所 | Support medium, helical antenna and method for manufacturing the same |
| CN113111493B (en) * | 2021-03-18 | 2022-03-22 | 东莞理工学院 | N-arm Archimedes spiral antenna broadband multi-OAM vortex electromagnetic wave generation method |
| CN113533919B (en) * | 2021-09-07 | 2021-12-17 | 湖北工业大学 | Miniaturized built-in flexible antenna sensor for partial discharge detection of power equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4424483A (en) * | 1981-04-16 | 1984-01-03 | The Narda Microwave Corporation | Microwave radiation monitor |
| US6201513B1 (en) * | 1997-08-25 | 2001-03-13 | Steven G. Ow | Compact low phase error antenna for the global positioning system |
| 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 |
| CN203983479U (en) * | 2014-07-18 | 2014-12-03 | 华南理工大学 | A kind of novel ultra-wideband flat helical antenna of integrated barron structure |
-
2015
- 2015-11-05 CN CN201510746503.8A patent/CN105261828B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4424483A (en) * | 1981-04-16 | 1984-01-03 | The Narda Microwave Corporation | Microwave radiation monitor |
| US6201513B1 (en) * | 1997-08-25 | 2001-03-13 | Steven G. Ow | Compact low phase error antenna for the global positioning system |
| 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 |
| CN203983479U (en) * | 2014-07-18 | 2014-12-03 | 华南理工大学 | A kind of novel ultra-wideband flat helical antenna of integrated barron structure |
Non-Patent Citations (1)
| Title |
|---|
| "Null Forming in Circularly Polarized Antenna Patterns Using Reactive Loading of Multi-Arm Archimedean Spiral Antenna";Waldemar Kunysz等;《IEEE Transactions on Antennas and Propagation》;20140904;第62卷(第11期);第5547-5556页 * |
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