CN105846017A - Frequency selective surface structure with wide passband and ultra-wide stopband - Google Patents
Frequency selective surface structure with wide passband and ultra-wide stopband Download PDFInfo
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- CN105846017A CN105846017A CN201610243497.9A CN201610243497A CN105846017A CN 105846017 A CN105846017 A CN 105846017A CN 201610243497 A CN201610243497 A CN 201610243497A CN 105846017 A CN105846017 A CN 105846017A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
- H01Q1/422—Housings not intimately mechanically associated with radiating elements, e.g. radome comprising two or more layers of dielectric material
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- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention relates to a frequency selective surface structure with wide passband and ultra-wide stopband. The frequency selective surface structure comprises a fine square ring array layer, a spiral meander line array layer and a thick square ring array layer, wherein the fine square ring array layer is etched on an upper surface inner side dielectric plate, the spiral meander line array layer is etched on an intermediate metal layer lower side dielectric plate, the thick square ring array layer is etched on a lower surface outer side dielectric plate, an upper side foam material interlayer is further arranged between the upper surface inner side dielectric plate and the intermediate metal layer lower side dielectric plate, and a lower side foam material interlayer is further arranged between the intermediate metal layer lower side dielectric plate and the lower surface outer side dielectric plate. The frequency selective surface structure has the advantages of small unit size, small thickness, low transmission loss, wide passband, good out-of-band rejection, further has the beneficial effects of ultra-wide stopband, wide electromagnetic wave scanning angular domain and stable scanning along azimuth angle of frequency response, and can be widely applied to antenna housing design in platforms such as radars, satellite communication and aircrafts.
Description
Technical field
The present invention relates to frequency-selective surfaces antenna house technical field, particularly broad passband ultra-wide stop-band frequency and select surface texture.
Background technology
In modern communications, radar, aircraft and electronic warfare system, often require that antenna has certain operational frequency bandwidth, and wish, outside the working band of antenna, the electromagnetic signal that need not frequency is had certain suppression, i.e. possess capacity of resisting disturbance.The most in such systems, usually require that its frequency-selective surfaces antenna house used has the characteristics such as low insertion loss, wide scanning angular domain and angle stability are good in passband, do not affect the original radiance of antenna as far as possible；Outside passband, require there is the outer inhibition of excellent broadband even ultra wide band, out of band signal effectively can be reflected, reduce the impact of interference frequency component.In actual application, it is also desirable to antenna house has certain mechanical strength and corrosion resistance characteristic, sleet, high temperature and dust storm can be protected an antenna from and corrode.
And existing research, most investigate is the frequency-selective surfaces transmission capacity to electromagnetic wave in operating frequency range, and transmission bandwidth is the most limited, and discusses less to Out-of-band rejection effect.But broad passband ultra-wide stop-band frequency selects skin antenna cover to have broad prospect of application.How to be designed with good broadband transmission characteristics and have excellent ultra broadband Out-of-band rejection concurrently, be one problem demanding prompt solution of frequency-selective surfaces antenna house.
Summary of the invention
It is an object of the invention to overcome the shortcoming of prior art, it is provided that a kind of broad passband ultra-wide stop-band frequency selects surface texture, and it has low insertion loss and the feature along azimuth sweep stable performance in 0 ~ 45 ° of incident angular domain.Meanwhile, there is outside passband ultra-wide stopband characteristic, to electromagnetic transmission suppression more than 20dB in stop band frequency range.
nullThe purpose of the present invention is achieved through the following technical solutions: broad passband ultra-wide stop-band frequency selects surface texture，Including thin side ring array layer、Helical curve broken line array layer and thick side ring array layer，Thin side ring array layer is etched in inside upper surface on dielectric-slab by PCB photoetching process，Thin side ring array layer is made up of multiple thin side's ring elements，And the arrangement of multiple thin side's ring element rectangular array，The top of thin side ring array layer is coated with upper surface lateral media plate，Helical curve broken line array layer is etched on intermediate metal layer lower media plate by PCB photoetching process，Helical curve broken line array layer is made up of multiple helical curve broken line unit，And the arrangement of multiple helical curve broken line unit rectangular array，Intermediate metal layer upper dielectric plate it is coated with above helical curve broken line array layer，Thick side ring array layer is etched on lower surface lateral media plate by PCB photoetching process，Thick side ring array layer is made up of multiple thick side's ring elements，And the arrangement of multiple thick side's ring element rectangular array，Upside foamed materials interlayer it is additionally provided with between dielectric-slab and intermediate metal layer upper dielectric plate inside upper surface，Downside foamed materials interlayer it is additionally provided with between dielectric-slab inside intermediate metal layer lower media plate and lower surface.
As preferably, described thin side ring element, helical curve broken line unit and thick side ring element are 90 ° of rotational symmetry structures.
As preferably, the cycle of described thin side ring element, helical curve broken line unit and thick side ring element is respectively less than 1/50 of the operation wavelength corresponding to mid frequency.
As preferably, the dielectric constant of upside foamed materials interlayer and downside foamed materials interlayer is 1.1.
The invention have the advantages that
1. within 0～45 ° of electromagnetic wave incident angular domain and operating frequency range, the loss of TE and TM polarized wave is the least, and rotational symmetric metal unit is preferable to TE and TM wave response concordance.
2. novel helical curve broken line unit effectively extends current path under limit cycle, and uses more metal layers cascade structure, improves pass band width.
3. metal array both sides are loaded with the medium substrate material of high intensity, not only reduce the unit cycle, and improve the transmission response stability along azimuth sweep so that the frequency response of the present invention is insensitive to the change of incident orientation angle, are conducive to reality application.
4. the unit cycle is much smaller than wavelength, is effectively delayed higher order resonances pattern and the high-order Floquet communication mode of unit, improves bandwidth of rejection, the transmission of electromagnetic wave in suppression stopband.
5. filter response squareness factor is high, the filter response of high squareness factor both ensure that the original radiation characteristic of working band internal antenna, and outside working band, effectively suppress interference, therefore can reduce and carry outer electromagnetic wave on the impact of wireless device in carrier platform in the case of not affecting antenna in-band communications.
From above-mentioned beneficial effect, the broad passband ultra-wide stop-band frequency that the present invention proposes selects surface texture to have low insertion loss, the wide scanning electrical property advantage such as angular domain and ultra broadband Out-of-band rejection；Also have high intensity, high temperature resistant and good mechanical stability isostructuralism advantage concurrently.The broad passband ultra-wide stop-band frequency proposed selects surface texture to can be widely applied to the antenna house of radio-based electronic devices in radar, satellite communication, navigation and aircraft.
Accompanying drawing explanation
Fig. 1 is the structural representation of thin side ring element；
Fig. 2 is the structural representation of helical curve broken line unit；
Fig. 3 is the structural representation of thick side ring element；
Fig. 4 is the structural representation of thin side ring array layer；
Fig. 5 is the structural representation of helical curve broken line；
Fig. 6 is the structural representation of thick side ring array layer；
Fig. 7 is frequency-selective surfaces medium substrate and the longitudinal profile schematic diagram of metal level distribution；
Fig. 8 is 0 ~ 45°TE polarized wave transmission coefficient figure in electromagnetic wave incident angular domain；
Fig. 9 is 0 ~ 45°TM polarized wave transmission coefficient figure in electromagnetic wave incident angular domain；
In figure: 1-carefully side's ring element, 2-helical curve broken line unit, 3-slightly side's ring element, 4-upper surface lateral media plate, 5-carefully side's ring array layer, dielectric-slab inside 6-upper surface, foamed materials interlayer on the upside of 7-, 8-intermediate metal layer upper dielectric plate, 9-helical curve broken line array layer, 10-intermediate metal layer lower media plate, foamed materials interlayer on the downside of 11-, dielectric-slab inside 12-lower surface, 13-slightly side's ring array layer, 14-lower surface lateral media plate.
Detailed description of the invention
The present invention will be further described below in conjunction with the accompanying drawings, but protection scope of the present invention is not limited to the following stated.
nullSuch as Fig. 1、2、Shown in 3 and 7，Broad passband ultra-wide stop-band frequency selects surface texture，Including thin side ring array layer 5、Helical curve broken line array layer 9 and thick side ring array layer 13，Thin side ring array layer 5 is etched in inside upper surface on dielectric-slab 6 by PCB photoetching process，Thin side ring array layer 5 is made up of multiple thin side's ring elements 1，And the arrangement of multiple thin side's ring element 1 rectangular array，As shown in Figure 4，The top of thin side ring array layer 5 is coated with upper surface lateral media plate 4，Helical curve broken line array layer 9 is etched on intermediate metal layer lower media plate 10 by PCB photoetching process，Helical curve broken line array layer 9 is made up of multiple helical curve broken line unit 2，And the arrangement of multiple helical curve broken line unit 2 rectangular array，As shown in Figure 5，Intermediate metal layer upper dielectric plate 8 it is coated with above helical curve broken line array layer 9，Thick side ring array layer 13 is etched on lower surface lateral media plate 14 by PCB photoetching process，Thick side ring array layer 13 is made up of multiple thick side's ring elements 3，And the arrangement of multiple thick side's ring element 3 rectangular array，As shown in Figure 6，Upside foamed materials interlayer 7 it is additionally provided with between dielectric-slab 6 and intermediate metal layer upper dielectric plate 8 inside upper surface，Downside foamed materials interlayer 11 it is additionally provided with between dielectric-slab 12 inside intermediate metal layer lower media plate 10 and lower surface.Inside upper surface lateral media plate 4, upper surface, inside dielectric-slab 6, intermediate metal layer upper dielectric plate 8, intermediate metal layer lower media plate 10, lower surface, dielectric-slab 12 and lower surface lateral media plate 14 are rigid media substrate, therefore thin side ring array layer 5, helical curve broken line array layer 9 and thick side ring array layer 13 are wrapped in rigid media substrate, it is effectively improved integrally-built mechanical strength and stability so that present invention could apply to the working environment of High Temperature High Pressure even high-speed flight.
As preferably, as Figure 1-3, described thin side ring element 1, helical curve broken line unit 2 and thick side ring element 3 are 90 ° of rotational symmetry structures, have good azimuth plane symmetry.
As preferably, the cycle of described thin side ring element 1, helical curve broken line unit 2 and thick side ring element 3 is respectively less than 1/50 of the operation wavelength corresponding to mid frequency, the unit cycle of thin side ring element 1, helical curve broken line unit 2 and thick side ring element 3 is 2.06mm, the live width of thin side ring element 1 is 0.5mm, and the live width of thick side ring element 3 is 0.72mm.
As preferably, the dielectric constant of upside foamed materials interlayer 7 and downside foamed materials interlayer 11 is 1.1, and suitable froth bed thickness can reduce the loss in passband and reduce weight.
The broad passband ultra-wide stop-band frequency of the present embodiment design selects surface texture, and its mid frequency is 2.12GHz, can work incidence angle territory be 0 ~ 45°, transmit passband frequency range 1.84 ~ 2.40GHz.The unit cycle, gross thickness was about the operation wavelength corresponding to 1/11st mid frequency less than the operation wavelength corresponding to 1/65th mid frequency.Fig. 8 is TE polarized wave transmission coefficient, and Fig. 9 is TM polarized wave transmission coefficient.In this passband frequency range of 1.84 ~ 2.40GHz, for 0 ~ 45°The electromagnetic wave that angular domain is incident, described frequency-selective surfaces structure TE, TM ripple Insertion Loss are respectively less than 0.86dB.Relative frequency band a width of 26.4%, transmission band is wider, and resonant frequency is the most stable with angle of incidence change.In 4.9 ~ 30GHz frequency range, the transmission suppression of TE and TM polarized wave is above 20dB, and Out-of-band rejection is functional.In addition, the cycle of this specific embodiment is far smaller than the operation wavelength corresponding to mid frequency, and therefore its frequency response is insensitive for the change of incident orientation angle.
From the above results, the present invention is that a kind of broad passband ultra-wide stop-band frequency that can provide good bandpass filtering performance in wide-angle territory selects surface texture.Using the present invention, can build the frequency-selective surfaces antenna house with spa-tial filter properties, it is capable of good transmission performance in work angular domain and operating frequency range, has low insertion loss and the feature of high squareness factor.Excellent ultra broadband reflection characteristic (transmission coefficient is less than-20dB) is had outside working band, can effectively suppress with outer electromagnetic wave the interference of wireless device in platform, can be applicable to the radome design in the platforms such as radar, satellite communication, global positioning system and aircraft.
Claims (4)
- null1. broad passband ultra-wide stop-band frequency selects surface texture，It is characterized in that: include thin side's ring array layer (5)、Helical curve broken line array layer (9) and thick side's ring array layer (13)，Thin side's ring array layer (5) is etched on dielectric-slab inside upper surface (6) by PCB photoetching process，Thin side's ring array layer (5) is made up of multiple thin side's ring elements (1)，And the arrangement of multiple thin side's ring element (1) rectangular array，The top of thin side's ring array layer (5) is coated with upper surface lateral media plate (4)，Helical curve broken line array layer (9) is etched on intermediate metal layer lower media plate (10) by PCB photoetching process，Helical curve broken line array layer (9) is made up of multiple helical curves broken line unit (2)，And the arrangement of multiple helical curve broken line unit (2) rectangular array，Helical curve broken line array layer (9) top is coated with intermediate metal layer upper dielectric plate (8)，Thick side's ring array layer (13) is etched on lower surface lateral media plate (14) by PCB photoetching process，Thick side's ring array layer (13) is made up of multiple thick side's ring elements (3)，And the arrangement of multiple thick side's ring element (3) rectangular array，Upside foamed materials interlayer (7) it is additionally provided with between dielectric-slab (6) and intermediate metal layer upper dielectric plate (8) inside upper surface，Downside foamed materials interlayer (11) it is additionally provided with between dielectric-slab (12) inside intermediate metal layer lower media plate (10) and lower surface.
- Broad passband ultra-wide stop-band frequency the most according to claim 1 selects surface texture, it is characterised in that: described thin side's ring element (1), helical curve broken line unit (2) and thick side's ring element (3) are 90 ° of rotational symmetry structures.
- Broad passband ultra-wide stop-band frequency the most according to claim 2 selects surface texture, it is characterised in that: the cycle of thin side's ring element (1), helical curve broken line unit (2) and thick side's ring element (3) is respectively less than 1/50 of the operation wavelength corresponding to mid frequency.
- Broad passband ultra-wide stop-band frequency the most according to claim 1 selects surface texture, it is characterised in that: the dielectric constant of upside foamed materials interlayer (7) and downside foamed materials interlayer (11) is 1.1.
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| CN201610243497.9A CN105846017A (en) | 2016-04-19 | 2016-04-19 | Frequency selective surface structure with wide passband and ultra-wide stopband |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654567A (en) * | 2017-01-20 | 2017-05-10 | 浙江大学 | Miniature high-performance and high-band communication antenna cover of capacitive and sensitive surface coupling mechanism |
| CN107453051A (en) * | 2017-07-06 | 2017-12-08 | 南京航空航天大学 | Antenna and its performance implementation method based on imperfect frequency-selective surfaces |
| CN107579352A (en) * | 2017-08-11 | 2018-01-12 | 西安电子科技大学 | A UWB Frequency Selective Surface for Radome Applications |
| CN107946762A (en) * | 2017-11-15 | 2018-04-20 | 哈尔滨工业大学 | X-band based on C-type clamp layer radome wall construction minimizes high wave transparent FSS |
| CN108387874A (en) * | 2018-01-26 | 2018-08-10 | 合肥驼峰电子科技发展有限公司 | A kind of millimetre-wave radar protective cover using sandwich |
| CN108615974A (en) * | 2018-05-03 | 2018-10-02 | 航天特种材料及工艺技术研究所 | Dissipative type broadband frequency-selective surfaces radome |
| CN108767487A (en) * | 2018-07-20 | 2018-11-06 | 电子科技大学 | A kind of restructural frequency-selective surfaces of bandpass-type Wide stop bands |
| CN109638448A (en) * | 2018-12-12 | 2019-04-16 | 航天科工武汉磁电有限责任公司 | A kind of metamaterial antenna cover and antenna system |
| CN110401041A (en) * | 2019-06-11 | 2019-11-01 | 中国电子科技集团公司第五十四研究所 | A kind of Wide stop bands frequency selection subreflector |
| CN110808475A (en) * | 2019-11-13 | 2020-02-18 | 北京环境特性研究所 | Broadband dual-frequency band-pass structure with stable angle |
| CN110994172A (en) * | 2019-12-26 | 2020-04-10 | 西安邮电大学 | A radome based on a wide stopband low frequency multilayer frequency selective surface |
| CN112186362A (en) * | 2020-09-15 | 2021-01-05 | 重庆邮电大学 | Dual-frequency miniaturized frequency selective surface with complementary structure |
| CN113346250A (en) * | 2021-06-22 | 2021-09-03 | 重庆邮电大学 | Millimeter wave three-frequency selection surface based on multilayer coupling structure |
| CN113937503A (en) * | 2021-10-14 | 2022-01-14 | 中国电子科技集团公司第三十六研究所 | Time-delay circuit board and manufacturing method thereof |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106654567B (en) * | 2017-01-20 | 2023-05-12 | 浙江大学 | Capacitive and Inductive Surface Coupling Mechanism Miniaturized High Performance High Band Communication Radome |
| CN106654567A (en) * | 2017-01-20 | 2017-05-10 | 浙江大学 | Miniature high-performance and high-band communication antenna cover of capacitive and sensitive surface coupling mechanism |
| CN107453051A (en) * | 2017-07-06 | 2017-12-08 | 南京航空航天大学 | Antenna and its performance implementation method based on imperfect frequency-selective surfaces |
| CN107579352B (en) * | 2017-08-11 | 2019-12-24 | 西安电子科技大学 | An ultra-broadband frequency selective surface suitable for radome |
| CN107579352A (en) * | 2017-08-11 | 2018-01-12 | 西安电子科技大学 | A UWB Frequency Selective Surface for Radome Applications |
| CN107946762A (en) * | 2017-11-15 | 2018-04-20 | 哈尔滨工业大学 | X-band based on C-type clamp layer radome wall construction minimizes high wave transparent FSS |
| CN108387874A (en) * | 2018-01-26 | 2018-08-10 | 合肥驼峰电子科技发展有限公司 | A kind of millimetre-wave radar protective cover using sandwich |
| CN108615974A (en) * | 2018-05-03 | 2018-10-02 | 航天特种材料及工艺技术研究所 | Dissipative type broadband frequency-selective surfaces radome |
| CN108767487B (en) * | 2018-07-20 | 2020-07-28 | 电子科技大学 | Band-pass type wide-stop-band reconfigurable frequency selection surface |
| CN108767487A (en) * | 2018-07-20 | 2018-11-06 | 电子科技大学 | A kind of restructural frequency-selective surfaces of bandpass-type Wide stop bands |
| CN109638448A (en) * | 2018-12-12 | 2019-04-16 | 航天科工武汉磁电有限责任公司 | A kind of metamaterial antenna cover and antenna system |
| CN110401041A (en) * | 2019-06-11 | 2019-11-01 | 中国电子科技集团公司第五十四研究所 | A kind of Wide stop bands frequency selection subreflector |
| CN110808475A (en) * | 2019-11-13 | 2020-02-18 | 北京环境特性研究所 | Broadband dual-frequency band-pass structure with stable angle |
| CN110994172A (en) * | 2019-12-26 | 2020-04-10 | 西安邮电大学 | A radome based on a wide stopband low frequency multilayer frequency selective surface |
| CN110994172B (en) * | 2019-12-26 | 2021-04-27 | 西安邮电大学 | A radome based on a wide stopband low frequency multilayer frequency selective surface |
| CN112186362A (en) * | 2020-09-15 | 2021-01-05 | 重庆邮电大学 | Dual-frequency miniaturized frequency selective surface with complementary structure |
| CN112186362B (en) * | 2020-09-15 | 2022-07-01 | 重庆邮电大学 | Dual-frequency miniaturized frequency selective surface with complementary structure |
| CN113346250A (en) * | 2021-06-22 | 2021-09-03 | 重庆邮电大学 | Millimeter wave three-frequency selection surface based on multilayer coupling structure |
| CN113937503A (en) * | 2021-10-14 | 2022-01-14 | 中国电子科技集团公司第三十六研究所 | Time-delay circuit board and manufacturing method thereof |
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Application publication date: 20160810 |