CN105609908A - Dual-band band-pass filter insensitive to polarization and wide-angle incidence - Google Patents
Dual-band band-pass filter insensitive to polarization and wide-angle incidence Download PDFInfo
- Publication number
- CN105609908A CN105609908A CN201610124612.0A CN201610124612A CN105609908A CN 105609908 A CN105609908 A CN 105609908A CN 201610124612 A CN201610124612 A CN 201610124612A CN 105609908 A CN105609908 A CN 105609908A
- Authority
- CN
- China
- Prior art keywords
- wide
- structured metal
- metal layer
- waveband
- insensitive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- H01P1/201—Filters for transverse electromagnetic waves
- H01P1/203—Strip line filters
Abstract
The invention relates to a dual-band band-pass filter insensitive to polarization and wide-angle incidence. The dual-band band-pass filter comprises a first structured metal layer, two dielectric layers and two second structured metal layers, wherein the two dielectric layers respectively cover the upper surface and the lower surface of the first structured metal layer, the second structured metal layers are completely same and respectively cover one surface of each dielectric layer, a plurality of first round holes and a plurality of second round holes are formed in the first structured metal layer, the first round holes and the second round holes are arranged in a square manner and have different sizes, each round hole is a center of a square block formed by nearest neighbor four round holes, and the second structured metal layers are metal surfaces formed by two concentric metal square-ring resonant units which are embedded to each other and arranged periodically. The filter has the favorable characteristics of polarization insensitivity, wide-angle incidence and high passband selectivity; and moreover, the geometric structure is simple in design, and the filter is convenient to process.
Description
Technical field
The present invention relates to a kind of polarization and the insensitive two waveband bandpass filter of wide-angle incident, belong to microwave technical field.
Background technology
Two waveband wave filter can allow the electromagnetic wave of two frequency ranges pass through simultaneously, has two pass-band performances, is convenient to application in practice. Xu Rongrong etc. have designed a kind of two waveband bandpass filter of loading capacitance of microwave section, in traditional resonant element, access the capacitor of different capacitances, two kinds of corresponding two resonance band of different capacitors, are grouped together like this and have just formed two waveband bandpass filter. But due to the access of capacitor, make the processing of whole wave filter special loaded down with trivial details and be not easy to practical application. A kind of two waveband bandpass filter of the present invention is operated in two frequency ranges simultaneously, stable performance, have selectively good, the advantage such as polarization mode is insensitive, wide-angle incident is stable, insertion loss is low of passband concurrently, can be good at being applied in reality, such as the making of bilateral band antenna house etc.
Summary of the invention
The object of the invention is to provide a kind of polarization and the insensitive two waveband bandpass filter of wide-angle incident. This kind of wave filter has that polarization is insensitive, wide-angle incident and the selective good good characteristic of passband, and geometry simplicity of design, is convenient to processing.
For achieving the above object, adopt following technical scheme: polarization and the insensitive two waveband bandpass filter of wide-angle incident, it comprises dielectric layer and two-layer second structured metal layer that be equal to completely, that be covered in respectively described dielectric layer one side of the first structured metal layer, the two-layer top and bottom that are covered in respectively described the first structured metal layer; Described the first structured metal layer is offered multiple square the first circular port and the second circular ports that arrange, different size separately, and the center of the square block of four the circular port compositions of arest neighbors of respectively doing for oneself; Described the second structured metal layer is the metal surface that two mutually nested concentric metal side ring resonant element periodic arrangement form.
Preferably, described first, second structured metal layer material therefor is copper.
Preferably, the material that described dielectric layer is selected is polytetrafluoroethylglass glass fiber cloth laminated board (F4B), the relative dielectric constant ε of described F4Br=2.65, losstangenttanδ=0.001.
Preferably, described the first circular port diameter is greater than described the second circular port diameter.
Preferably, the diameter of described the first circular port is 8.4mm, and the diameter of described the second circular port is 3mm.
Preferably, the outer length of side of described two mutually nested concentric metal side ring outer-loops is 9.6mm, and width is 0.8mm, and the outer length of side of interior ring is 7mm, and width is 0.5mm, and described two side's ring spacings are 0.5mm.
Preferably, the thickness of described first, second structured metal layer is 0.025mm, and the thickness of described two dielectric layers is 1.5mm.
Preferably, the hole heart distance of described two arest neighbors the first circular ports or two second circular ports is 10mm.
Polarization and the insensitive two waveband bandpass filter of wide-angle incident, it comprises dielectric layer and two-layer second structured metal layer that be equal to completely, that be covered in respectively described dielectric layer of the first structured metal layer, the two-layer top and bottom that are covered in respectively described the first structured metal layer; Described the first structured metal layer is offered multiple square the first circular port and the second circular ports that arrange, different size separately, and the foursquare center of four the circular port compositions of arest neighbors of respectively doing for oneself; Described the second structured metal layer is the metal surface that two mutually nested concentric metal side ring resonant element periodic arrangement form.
Compared with prior art, the present invention has following advantage: 1, the insensitive two waveband bandpass filter of polarization of the present invention and wide-angle incident can be operated in two independently microwave frequency bands simultaneously, and each frequency range has the characteristic of high wave transparent. 2, the insensitive two waveband bandpass filter structures of polarization of the present invention and wide-angle incident is simple, only need first in the first structured metal layer described in a pcb board one side etching, periodically the first and second circular ports described in etching, opposite etching the second structured metal layer. Engrave described the second structured metal layer in another piece pcb board one side again, and the metal etch on its opposite is fallen, and then two pcb board subcenters are superimposed relatively. 3, the insensitive two waveband bandpass filter of polarization of the present invention and wide-angle incident is easy to processing, and cost is low, and common manufacturing process can complete.
Brief description of the drawings
Fig. 1 is two waveband band-pass filter unit structure perspective view of the present invention.
Fig. 2 is floor map and the cellular construction of the first structured metal layer of two waveband bandpass filter of the present invention.
Fig. 3 is floor map and the cellular construction of the second structured metal layer of two waveband bandpass filter of the present invention.
Fig. 4 is two waveband bandpass filter of the present invention emulation transmission spectrum and absorption spectra under TE, two kinds of polarization modes of TM in the time of electromagnetic wave vertical incidence.
Fig. 5 is the transmission spectrum of two waveband bandpass filter of the present invention electromagnetic wave multi-angle (0 °-40 °) incident gained under TE polarization mode.
Fig. 6 is the transmission spectrum of two waveband bandpass filter of the present invention electromagnetic wave multi-angle (0 °-40 °) incident gained under TM polarization mode.
Fig. 7 two waveband band-pass filter unit of the present invention structure separates emulation transmission spectrum.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is done further and explained.
As shown in Figure 1, cellular construction perspective view of double-passband filter of the present invention, a corresponding first structured metal layer cellular construction, the second structured metal layer cellular construction that two are equal to completely and two dielectric layers form a filter cell structure, and whole wave filter comprises 25 × 25 respectively along the filter cell structure of x, y both direction periodic arrangement. Described the first structured metal layer cellular construction is made up of four four/1 second circular port of described the first circular port and arest neighbors. Described the second structured metal layer cellular construction is made up of two mutually nested concentric metal Fang Huan.
As shown in Figure 2, described the first structured metal layer is offered multiple the first circular ports and the second circular port (in figure, black part is divided expression metal level, adopts material copper, and white portion is first and second circular port). Described the first circular port and the second circular port are square separately to be arranged, and planar the cycle launches, and the foursquare center of four the circular port compositions of arest neighbors of respectively doing for oneself. The diameter of described the first circular port is greater than the second circular port diameter, and the diameter of the first circular port is 8.4mm, and the diameter of the second circular port is 3mm. The hole heart distance of described two arest neighbors the first circular ports or two second circular ports is 10mm.
As shown in Figure 3, described the second structured metal layer is the metal surface that two mutually nested concentric metal side ring resonant element periodic arrangement form. The material that described the second structured metal layer adopts is also copper, and the outer length of side of two mutually nested concentric metal side ring outer-loops is 9.6mm, and width is 0.8mm, and the outer length of side of interior ring is 7mm, and width is 0.5mm, and described two side's ring spacings are 0.5mm.
In the present embodiment, described first, second structured metal layer material therefor is copper (also can be other metal materials as gold, silver etc.), described dielectric layer material is polytetrafluoroethylglass glass fiber cloth laminated board (F4B), the relative dielectric constant ε of described F4Br=2.65, losstangenttanδ=0.001.
Utilize the CST of 3 D electromagnetic simulation software to carry out emulation, arrange according to said structure parameter, in software, set up filter construction model of element as shown in Figure 1. Wherein the length of filter construction unit and width are 10mm, are the described first or second circular port hole heart distance. Add electric field E in x direction, y direction adds magnetic field H, and whole electromagnetic wave impinges perpendicularly on wave filter surface, as shown in Figure 1. Emulation obtains polarization of the present invention and the insensitive two waveband bandpass filter of wide-angle incident transmission coefficient S21With reflectance factor S11With the change curve of wave frequency f. As shown in Figure 4, be double-passband filter of the present invention emulation transmission spectral line and absorption line under TE, two kinds of polarization modes of TM when the electromagnetic wave vertical incidence. Because filter construction has rotational symmetry, so the spectral line obtaining under two kinds of polarization modes is the same. From figure, we can find out, in microwave frequency band 0-12GHz frequency range, occurred that two transmissions are high, reflected low passband, other parts transmission low, reflect highly, form stopband. In other words, two waveband bandpass filter of the present invention has the characteristic of bilateral band, and the transmitance of two passbands is also very high, and Out-of-band rejection might as well.
In actual applications, we not only will consider the performance performance of wave filter in the time of electromagnetic wave vertical incidence, also will consider the performance performance under electromagnetic wave multi-angle condition of incidence. As shown in Figure 5, Figure 6, be the transmission spectrum of two waveband bandpass filter of the present invention electromagnetic wave multi-angle (0 °-40 °) incident gained under TE, two kinds of polarization modes of TM. From figure, we find out, no matter electromagnetic wave is TE polarization mode or TM polarization mode, under two kinds of polarization modes, gained filter transmission performance is all very stable, and two passbands all can not produce " red shift " or " blue shift ", even to 40oThe transmitance of two passbands is still very high. In other words, two waveband bandpass filter of the present invention is not only irrelevant with incident electromagnetic wave polarization mode (TE polarization, TM polarization), and still shows excellent performance under the incident of electromagnetic wave wide-angle.
For the formation mechanism of clear and definite two waveband, the present invention has done separation simulation process to filter construction unit. As shown in Figure 7, for two waveband bandpass filter structures of the present invention unit separates emulation transmission spectrum. (brief note is U specifically to comprise two-layer described the second structured metal layer resulting structures unit of removal1) emulation transmission spectrum (spectrum 1), (brief note is U to remove described in one deck the first structured metal layer resulting structures unit2) emulation transmission spectrum (spectrum 2) and the emulation transmission spectrum (composing 3) of filter construction of the present invention unit (brief note is U). From figure, we can find out, spectrum 1 and spectrum 2 are superimposed together and have formed spectrum 3, and the existence of spectrum 1 has just in time dragged down the curve of composing 2 low frequency part, has formed first passband. In other words, described in one deck, the low frequency part of the first structured metal layer and the low frequency part of two-layer described the second structured metal layer have formed low frequency pass band, the HFS formation high frequency passband of two-layer described the second structured metal layer jointly. The transmitance of two passbands is high, and in band, ripple is also very low, and Out-of-band rejection is also fine.
In actual fabrication, we select two blocks of living two-sided PCB dielectric-slabs that are all covered with metallic copper, first in the first structured metal layer described in a pcb board one side etching, periodically the first and second circular ports described in etching, opposite etching the second structured metal layer. Engrave described the second structured metal layer in another piece pcb board one side again, and the metal etch on its opposite is fallen, and then two PCB piece plank centers are superimposed relatively. Described multiple first circular port hole hearts and described metal side ring center-aligned. Described the first circular port all can adopt the technology such as plating, photoetching to process with the second circular port, described mutually nested concentric metal side ring.
The above is the preferred embodiment of the present invention, should not be construed as limiting the invention. For those skilled in the art; do not departing under the prerequisite of the concrete principle of the present invention; some retouchings and the improvement done, as the thickness etc. of structured metal layer and dielectric layer as described in changing, these retouchings and improve and be also all considered as protection scope of the present invention.
Claims (8)
1. polarization and the insensitive two waveband bandpass filter of wide-angle incident, is characterized in that: the dielectric layer and two-layer the second structured metal layer that be equal to completely, that be covered in respectively described dielectric layer one side that comprise the first structured metal layer, the two-layer top and bottom that are covered in respectively described the first structured metal layer; Described the first structured metal layer is offered multiple square the first circular port and the second circular ports that arrange, different size separately, and the center of the square block of four the circular port compositions of arest neighbors of respectively doing for oneself; Described the second structured metal layer is the metal surface that two mutually nested concentric metal side ring resonant element periodic arrangement form.
2. the insensitive two waveband bandpass filter of polarization according to claim 1 and wide-angle incident, is characterized in that: described first, second structured metal layer material therefor is copper.
3. the insensitive two waveband bandpass filter of polarization according to claim 1 and wide-angle incident, is characterized in that: described dielectric layer is polytetrafluoroethylglass glass fiber cloth laminated board (F4B).
4. the insensitive two waveband bandpass filter of polarization according to claim 1 and wide-angle incident, is characterized in that: described the first circular port diameter is greater than described the second circular port diameter.
5. the insensitive two waveband bandpass filter of polarization according to claim 4 and wide-angle incident, is characterized in that: the diameter of described the first circular port is 8.4mm, the diameter of described the second circular port is 3mm.
6. the insensitive two waveband bandpass filter of polarization according to claim 1 and wide-angle incident, it is characterized in that: the outer length of side of described two mutually nested concentric metal side ring outer-loops is 9.6mm, width is 0.8mm, the outer length of side of interior ring is 7mm, width is 0.5mm, and described two side's ring spacings are 0.5mm.
7. the insensitive two waveband bandpass filter of polarization according to claim 1 and wide-angle incident, is characterized in that: the thickness of described first, second structured metal layer is 0.025mm, and the thickness of described two dielectric layers is 1.5mm.
8. the insensitive two waveband bandpass filter of polarization according to claim 1 and wide-angle incident, is characterized in that: the hole heart of described two arest neighbors the first circular ports or two second circular ports is apart from being 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610124612.0A CN105609908A (en) | 2016-03-07 | 2016-03-07 | Dual-band band-pass filter insensitive to polarization and wide-angle incidence |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610124612.0A CN105609908A (en) | 2016-03-07 | 2016-03-07 | Dual-band band-pass filter insensitive to polarization and wide-angle incidence |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105609908A true CN105609908A (en) | 2016-05-25 |
Family
ID=55989574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610124612.0A Pending CN105609908A (en) | 2016-03-07 | 2016-03-07 | Dual-band band-pass filter insensitive to polarization and wide-angle incidence |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105609908A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493603A (en) * | 2018-04-24 | 2018-09-04 | 南京信息工程大学 | A kind of polarization of ele reconfigurable antenna cover |
| CN110034408A (en) * | 2019-04-24 | 2019-07-19 | 西安电子科技大学 | A kind of broad passband 3D frequency-selective surfaces |
| CN112290225A (en) * | 2020-10-26 | 2021-01-29 | 中国人民解放军空军工程大学 | Large-angle broadband frequency selective surface |
| CN112736481A (en) * | 2020-12-25 | 2021-04-30 | 南京航空航天大学 | Three-screen double-passband high-selectivity frequency selection surface and design method thereof |
| CN113036323A (en) * | 2021-03-02 | 2021-06-25 | 南京邮电大学 | Double-passband terahertz wave broadband filter |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120013989A1 (en) * | 2010-07-15 | 2012-01-19 | Electronics And Telecommunications Research Institute | Meta material and method of manufacturing the same |
| CN102683846A (en) * | 2012-04-28 | 2012-09-19 | 深圳光启创新技术有限公司 | Metamaterial antenna cover and antenna system |
| CN102983409A (en) * | 2012-12-11 | 2013-03-20 | 电子科技大学 | High-transmissivity flat left-handed material |
| CN103545618A (en) * | 2013-09-25 | 2014-01-29 | 华中科技大学 | Terahertz waveband broadband absorbing metamaterial |
| US20140085693A1 (en) * | 2012-09-26 | 2014-03-27 | Northeastern University | Metasurface nanoantennas for light processing |
| CN104409803A (en) * | 2014-11-20 | 2015-03-11 | 中国矿业大学 | Terahertz bandwidth band-pass filter based on artificial electromagnetic material |
| CN104485514A (en) * | 2015-01-08 | 2015-04-01 | 山西大学 | Wide-frequency-band low-dispersion and negative-refraction material |
| CN104810583A (en) * | 2015-05-07 | 2015-07-29 | 中国矿业大学 | Polarization and wide-angle-incidence insensitive three-band metamaterial band-pass filter |
| CN105071036A (en) * | 2015-07-16 | 2015-11-18 | 武汉市灵动时代智能技术有限公司 | X-waveband intelligent metamaterial wide-angle wave-transparent radome |
-
2016
- 2016-03-07 CN CN201610124612.0A patent/CN105609908A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120013989A1 (en) * | 2010-07-15 | 2012-01-19 | Electronics And Telecommunications Research Institute | Meta material and method of manufacturing the same |
| CN102683846A (en) * | 2012-04-28 | 2012-09-19 | 深圳光启创新技术有限公司 | Metamaterial antenna cover and antenna system |
| US20140085693A1 (en) * | 2012-09-26 | 2014-03-27 | Northeastern University | Metasurface nanoantennas for light processing |
| CN102983409A (en) * | 2012-12-11 | 2013-03-20 | 电子科技大学 | High-transmissivity flat left-handed material |
| CN103545618A (en) * | 2013-09-25 | 2014-01-29 | 华中科技大学 | Terahertz waveband broadband absorbing metamaterial |
| CN104409803A (en) * | 2014-11-20 | 2015-03-11 | 中国矿业大学 | Terahertz bandwidth band-pass filter based on artificial electromagnetic material |
| CN104485514A (en) * | 2015-01-08 | 2015-04-01 | 山西大学 | Wide-frequency-band low-dispersion and negative-refraction material |
| CN104810583A (en) * | 2015-05-07 | 2015-07-29 | 中国矿业大学 | Polarization and wide-angle-incidence insensitive three-band metamaterial band-pass filter |
| CN105071036A (en) * | 2015-07-16 | 2015-11-18 | 武汉市灵动时代智能技术有限公司 | X-waveband intelligent metamaterial wide-angle wave-transparent radome |
Non-Patent Citations (1)
| Title |
|---|
| SOMAK BHATTACHARYYA .ET AL: "Dual Layer Polarazation Insensitive Dual Band Metamaterrial Absorber with Enhanced Bandwidths", 《PROCEEDING OF ASIA-PACIFIC MICROWAVE CONFERENCE 2014》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108493603A (en) * | 2018-04-24 | 2018-09-04 | 南京信息工程大学 | A kind of polarization of ele reconfigurable antenna cover |
| CN108493603B (en) * | 2018-04-24 | 2023-10-13 | 南京信息工程大学 | Electromagnetic wave polarization reconfigurable antenna housing |
| CN110034408A (en) * | 2019-04-24 | 2019-07-19 | 西安电子科技大学 | A kind of broad passband 3D frequency-selective surfaces |
| CN112290225A (en) * | 2020-10-26 | 2021-01-29 | 中国人民解放军空军工程大学 | Large-angle broadband frequency selective surface |
| CN112736481A (en) * | 2020-12-25 | 2021-04-30 | 南京航空航天大学 | Three-screen double-passband high-selectivity frequency selection surface and design method thereof |
| CN113036323A (en) * | 2021-03-02 | 2021-06-25 | 南京邮电大学 | Double-passband terahertz wave broadband filter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105609908A (en) | Dual-band band-pass filter insensitive to polarization and wide-angle incidence | |
| CN101421918B (en) | Layered band pass filter | |
| CN106602252B (en) | 2.5-dimensional ultra-wideband mobile communication radome with grid square ring loaded via hole structure | |
| CN103151580B (en) | Double-frequency-band submillimeter wave FSS (frequency selective surface) with loading fractal structure | |
| CN107946762B (en) | X-waveband miniaturized high-wave-permeability FSS (frequency selective surface system) based on C-type interlayer radar cover wall structure | |
| US10840871B2 (en) | Multilayer LC filter | |
| US8502623B2 (en) | Band pass filter | |
| CN104064840B (en) | Miniaturization band resistance type frequency-selective surfaces | |
| CN102738541A (en) | Layered bandpass filter | |
| CN104092010A (en) | Frequency selection surface structure based on multilayer annular slit pasters | |
| CN100524941C (en) | Three-frequency bad high-performance frequency selection surface based on adjacent unit micro interference | |
| CN110690577A (en) | Dual-polarization band-pass three-dimensional frequency selection surface with bilateral steep drop characteristic | |
| CN103959645A (en) | Electronic component | |
| US9583806B2 (en) | Multi-band pass filter | |
| CN207052765U (en) | The dimension of one kind 2.5 closes ring-like frequency-selective surfaces structure | |
| CN101286584A (en) | Novel bilateral frequency selecting surface having sudden drop characteristic | |
| CN105703042A (en) | S type miniaturized frequency selective surface formed broadband wave-transmission structure | |
| US10153532B2 (en) | Filter structure improvement | |
| CN102931455B (en) | Dual-frequency millimeter wave frequency selective surface | |
| CN201117773Y (en) | Frequency selection surface possessing bilateral dropping characteristic | |
| Choudhary et al. | A band-reject frequency selective surface with stable response for WLAN applications | |
| CN201117774Y (en) | Three frequency range high performance frequency selection surface based on adjacent unit perturbation | |
| CN109361042A (en) | A kind of frequency demultiplexer | |
| KR101158848B1 (en) | Dielectric block band-stop filter | |
| CN113851801B (en) | Bandwidth-stable frequency selective surface structure based on pole coupling and splitting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160525 |