CN104810578A - U-shaped slot type artificial surface plasmonband elimination filter - Google Patents
U-shaped slot type artificial surface plasmonband elimination filter Download PDFInfo
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- CN104810578A CN104810578A CN201510238962.5A CN201510238962A CN104810578A CN 104810578 A CN104810578 A CN 104810578A CN 201510238962 A CN201510238962 A CN 201510238962A CN 104810578 A CN104810578 A CN 104810578A
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Abstract
AU-shaped slot type artificial surface plasmonband elimination filter belongs to a multiband band elimination filter. The band elimination filter comprises a flexible dielectric substrate, a periodic metal optical grating, a U-shaped slot, a coplanar waveguide and a coupled structure, wherein the periodic metal optical grating is printed on the flexible dielectric substrate; the periodic metal optical grating is connected with the coupled structure and the coplanar waveguide; the periodic metal optical grating is combined with the U-shaped slot; the U-shaped slot represents that a metal film is not printed. The U-shaped slot type artificial surface plasmonband elimination filter has the advantages that 1, the periodicity of the U-shaped slot is selected as 1,2 and 3, band elimination filtering of one-wave band, two-wave band and three-wave band of a microwave band can be realized; 2, the structure is simple, the manufacturing is convenient, and the periodic metal optical grating structure has strong constraint on an electromagnetic field; 3, the structure of combining the periodic metal optical grating with the U-shaped slot is smaller in size and flexible, and can be applied to a microwave integration circuit with a compact size and a special function; 4, the metal optical grating structure can be applied to microwave, millimeter wave and terahertz frequency band through changing the basic parameters.
Description
Technical field
The present invention relates to a kind of multiband band stop filter, particularly a kind of U-shaped open flume type artificial surface phasmon multiband band stop filter.
Background technology
Band stop filter plays a part very important in modern communications and signal processing system, is indispensable function element in microwave and millimeter wave circuit and communication system.
Artificial surface phasmon by the restriction of diffraction limit, thus not can be used for miniaturized device, in sufacing and integrated circuit etc., has important application.U-shaped open flume type has reduced size and flexibility based on artificial surface phasmon multiband band stop filter, can be applied in the integrated circuit of the synthesis with compact size and specific function and go.This sub-wavelength structure shows very excellent wave-guiding characteristic, can realize the transmission of electromagnetic wave along irregular surfaces such as plane, bending, spirals, have extraordinary application prospect.This device is convenient to processing, is easy to integrated, and band resistance is satisfactory for result, has great practical value.
But these conventional filter great majority existing are all transmission-type or reflection bandstop filter, its thickness is great majority is millimeter ranks, and transmission area or reflective surface area are also larger.Not there is the compact size of this Novel Filter, flexibility, light feature, compare in the microwave integrated circuit being difficult to synthesize and there is compact size and specific function; The filter of existing traditional type is so easily synthesized in the microwave integrated circuit with compact size and specific function unlike this novel surface delivery type band stop filter in other words.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides and be a kind ofly printed on flexible ultra-thin dielectric film, and thickness is close to zero, and U-shaped open flume type is based on artificial surface phasmon multiband band stop filter.
Technical scheme: to achieve these goals, the technical solution used in the present invention is: this multiband band stop filter comprises: flexible dielectric substrate, periodically metal grating, U-type groove, co-planar waveguide and coupled structure; Flexible dielectric substrate is printed periodically metal grating, and periodically metal grating is connected with coupled structure and co-planar waveguide; Periodically metal grating is combined with U-type groove, and U-type groove is expressed as not type metal film; Described co-planar waveguide is guided wave transmission structure.
Described coupled structure is the metallic film of gradual change aperiodicity metal grating and arc shape; Or described coupled structure is the periodicity metal grating of groove depth gradual change and the metallic film of arc shape, be the artificial surface phasmon transmitted on periodicity metal grating structure by the guided wave Efficient Conversion of coplanar wave guide transmission; Or described coupled structure is coupler.
Described periodicity metal grating two ends are linked in sequence coupled structure and co-planar waveguide; Or described periodicity metal grating two ends butt coupling structure and co-planar waveguide respectively.
Described periodicity metal grating is artificial surface phasmon transmitter or artificial surface phasmon transmission line, and this artificial surface phasmon transmitter or artificial surface phasmon transmission line are the metallic film unit of periodic arrangement; Described metallic film unit is U-shaped, and the periodicity continuous gapless arrangement of U-shaped metallic film unit just constitutes so-called periodicity metal grating, i.e. artificial surface phasmon transmitter or artificial surface phasmon transmission line.
Described periodicity metal grating structure (1) supports the high efficiency of transmission of artificial surface phasmon.
Further, the Cycle Length of described U-type groove is consistent with the Cycle Length of metal grating.
Further, for realizing one, two, three wave band bandreject filterings respectively, the periodicity of described U-type groove respectively correspondence chooses 1,2,3.
Beneficial effect and advantage:
(1) take periodically metal grating to be combined with U-type groove, just can realize the bandreject filtering in microwave section;
(2) periodicity of U-type groove chooses 1,2,3, just can realize at a wave band of microwave section, two wave bands and three wave band bandreject filterings, and filter effect is obvious;
(3) structure is simple, easy to make, and periodically metal grating structure has and ties up the intense beam of electromagnetic field, thus makes electromagnetic wave along the transmission of the irregular surfaces such as plane, bending, spiral;
(4) structure that periodically metal grating is combined with U-type groove has reduced size and flexibility, can be applied in the microwave integrated circuit with compact size and specific function;
(5) cycle of the depth of groove of the width of metal grating, metal grating, metal grating is as basic parameter, change basic parameter, can change the dispersion curve of microwave, design meets the metal grating structure of working frequency range, can apply to microwave, millimeter involves Terahertz frequency range.
Accompanying drawing explanation
Fig. 1 (a) is the structural representation realizing single band bandreject filtering of the present invention.
Fig. 1 (b) is the structural representation enlarged drawing of 1 cycle U-type groove in Fig. 1 (a).
Fig. 2 is the structural representation enlarged drawing of 2 the cycle U-type groove of the present invention when realizing two waveband bandreject filtering.
Fig. 3 is the structural representation enlarged drawing of 3 the cycle U-type groove of the present invention when realizing three wave band bandreject filterings.
Fig. 4 is the preferred parameter (default units of numerical value is millimeter) of U-type groove of the present invention.
Fig. 5 is the experimental data analogous diagram that the present invention realizes single band bandreject filtering.
Fig. 6 is the experimental data analogous diagram that the present invention realizes two waveband bandreject filtering.
Fig. 7 is the experimental data analogous diagram that the present invention realizes three wave band bandreject filterings.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
This multiband band stop filter comprises: flexible dielectric substrate, periodically metal grating, U-type groove, co-planar waveguide and coupled structure; Flexible dielectric substrate is printed periodically metal grating, and periodically metal grating is connected with coupled structure and co-planar waveguide; Periodically metal grating is combined with U-type groove, and U-type groove is expressed as not type metal film; Described co-planar waveguide is guided wave transmission structure.
Described coupled structure is the metallic film of gradual change aperiodicity metal grating and arc shape; Or described coupled structure is the periodicity metal grating of groove depth gradual change and the metallic film of arc shape, be the artificial surface phasmon transmitted on periodicity metal grating by the guided wave Efficient Conversion of coplanar wave guide transmission; Or described coupled structure is coupler.
Guided wave Efficient Conversion at coplanar wave guide transmission is the artificial surface phasmon transmitted on the waveguide of periodicity metal grating by described coupled structure; Or described coupled structure is coupler.
Described periodicity metal grating two ends are all linked in sequence coupled structure and co-planar waveguide; Or described periodicity metal grating two ends butt coupling structure and co-planar waveguide respectively.
Described periodicity metal grating is artificial surface phasmon transmitter or for artificial surface phasmon transmission line, this artificial surface phasmon transmitter or for artificial surface phasmon transmission line be the metallic film unit of periodic arrangement; Described metallic film unit is U-shaped, and the arrangement of the continuous gapless of periodicity of U-shaped metallic film unit just constitutes so-called periodicity metal grating, i.e. artificial surface phasmon transmitter or be artificial surface phasmon transmission line.
Described periodicity metal grating structure (1) supports the high efficiency of transmission of artificial surface phasmon.
Further, the Cycle Length of described U-type groove is consistent with the Cycle Length of metal grating.
Further, the periodicity of U-type groove chooses 1,2,3, just can realize at a wave band of microwave section, two wave bands and three wave band bandreject filterings.
Concrete, in Fig. 1 (a), Fig. 1 (b), Fig. 2, Fig. 3, U-shaped open flume type, based on a band stop filter for artificial surface phasmon, comprises ultrathin flexible medium substrate, periodically metal grating, U-type groove, co-planar waveguide and coupled structure.
Artificial surface phasmon transmitter (line) is a kind of metallic film unit of the periodic arrangement be printed on medium substrate same plane, length, the height dimension of metallic film unit are less than operation wavelength, thickness is much smaller than operation wavelength, surface wave transmission can be strapped in the degree of depth sub-wavelength dimensions scope around metal tape, realize the high efficiency of transmission of electromagnetic energy.By changing the basic parameter such as width, the depth of groove of metal grating, the cycle of metal grating of metal grating, the dispersion curve of microwave can be changed, thus design meets the metal grating structure of working frequency range.The multiband band stop filter of this surface delivery type has reduced size and flexibility, can be applied in the microwave integrated circuit with compact size and specific function.This sub-wavelength structure shows very excellent wave-guiding characteristic, can realize the transmission of electromagnetic wave along irregular surfaces such as plane, bending, spirals, have extraordinary application prospect.This device is convenient to processing, is easy to integrated, and band resistance is satisfactory for result, has great practical value.
In the diagram, marked the structural parameters of U-type groove and metal grating optimum organization, default number unit is millimeter, and the cycle choosing U-type groove is here 1, can realize single band bandreject filtering.Realize two, three wave band bandreject filterings if want, by increasing the number of cycles of U-type groove, other structure forming this filter remains unchanged.
In Fig. 5, Fig. 6, Fig. 7, one, two, the three wave band band stop filter performance curves based on artificial surface phasmon comprise: S
21transmission coefficient and S
11reflection coefficient.Abscissa represents frequency component, and unit is GHz, and left ordinate scale represents amplitude variations, and unit is dB.
In Figure 5, single band band stop filter of the present invention, choosing U-type groove is 1 cycle.Be 7.85GHz in frequency, transmission coefficient S
21be about-20.4dB, the energy of output port is very little, and signal ends; And the transmission coefficient S of other frequency bands
21be about-2dB, the energy of output port is very large, and signal passes through.
In figure 6, two waveband band stop filter of the present invention, choosing U-type groove is 2 cycles.Be 5.54GHz and 9.11GHz in frequency, transmission coefficient S
21be about-18.1dB and-25.7dB respectively, the energy of output port is very little, and signal ends; And the transmission coefficient S of other frequency bands
21be about-2dB, the energy of output port is very large, and signal passes through.
In the figure 7, three wave band band stop filters of the present invention, choosing U-type groove is 3 cycles.When frequency is 4.21GHz, 7.46Ghz and 9.60GHz, transmission coefficient S
21be about-17.5dB ,-25.5dB ,-18.2dB respectively, the energy of output port is very little, and signal ends; And the transmission coefficient S of other frequencies
21be about-2dB, the energy of output port is very large, and signal passes through.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. a U-shaped open flume type artificial surface phasmon multiband band stop filter, is characterized in that: this multiband band stop filter comprises: flexible dielectric substrate (5), periodically metal grating (1), U-type groove (2), co-planar waveguide (3) and coupled structure (4); Flexible dielectric substrate is printed periodically metal grating, and periodically metal grating is connected with coupled structure and co-planar waveguide; Periodically metal grating is combined with U-type groove, and U-type groove is expressed as not type metal film; Described co-planar waveguide is guided wave transmission structure.
2. one according to claim 1 U-shaped open flume type artificial surface phasmon multiband band stop filter, is characterized in that: described coupled structure is the metallic film (41) of gradual change aperiodicity metal grating (42) and arc shape; Or described coupled structure is the periodicity metal grating of groove depth gradual change and the metallic film of arc shape, be the artificial surface phasmon transmitted on periodicity metal grating by the guided wave Efficient Conversion of coplanar wave guide transmission; Guided wave Efficient Conversion at coplanar wave guide transmission is the artificial surface phasmon transmitted on the waveguide of periodicity metal grating by described coupled structure; Or described coupled structure is coupler.
3. one according to claim 1 U-shaped open flume type artificial surface phasmon multiband band stop filter, is characterized in that: described periodicity metal grating two ends are linked in sequence coupled structure and co-planar waveguide; Or described periodicity metal grating two ends butt coupling structure and co-planar waveguide respectively.
4. one according to claim 1 U-shaped open flume type artificial surface phasmon multiband band stop filter, it is characterized in that: described periodicity metal grating is artificial surface phasmon transmitter or is artificial surface phasmon transmission line, and this artificial surface phasmon transmitter or artificial surface phasmon transmission line are the metallic film unit of periodic arrangement; Described metallic film unit is U-shaped, and the periodicity continuous gapless arrangement of U-shaped metallic film unit just constitutes so-called periodicity metal grating, i.e. artificial surface phasmon transmitter or artificial surface phasmon transmission line.
5. one according to claim 1 U-shaped open flume type artificial surface phasmon multiband band stop filter, is characterized in that: described periodicity metal grating structure (1) supports the high efficiency of transmission of artificial surface phasmon.
6. one according to claim 1 U-shaped open flume type artificial surface phasmon multiband band stop filter, is characterized in that: the Cycle Length of described U-type groove is consistent with the Cycle Length of metal grating.
7. one according to claim 1 U-shaped open flume type artificial surface phasmon multiband band stop filter, is characterized in that: the periodicity of U-type groove chooses 1,2,3, realizes at a wave band of microwave section, two wave bands and three wave band bandreject filterings.
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Cited By (9)
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| CN105006616A (en) * | 2015-07-30 | 2015-10-28 | 上海理工大学 | Terahertz time-domain spectrum system based on ultra-wideband chip |
| CN105119029A (en) * | 2015-09-16 | 2015-12-02 | 江苏师范大学 | High-efficient broadband band-pass filter based on artificial surface Plasmon |
| CN105261841A (en) * | 2015-09-16 | 2016-01-20 | 东南大学 | Quasi-surface plasmon-based leaky-wave antenna |
| CN105280996A (en) * | 2015-10-08 | 2016-01-27 | 中国矿业大学 | Artificial surface plasmon broadband bandstop filter based on composite U-shaped groove structure |
| CN105428774A (en) * | 2015-12-21 | 2016-03-23 | 上海理工大学 | Method for increasing pseudo surface plasma transmission bandwidth |
| CN105958162A (en) * | 2016-06-15 | 2016-09-21 | 六盘水师范学院 | Microwave low-pass filter with semi-circular-arc groove structure |
| CN106025462A (en) * | 2016-06-28 | 2016-10-12 | 江苏赛博防务技术有限公司 | Band elimination filter based on artificial surface plasmon and complementary split-ring resonator |
| CN110444865A (en) * | 2019-08-06 | 2019-11-12 | 南京邮电大学 | Log-periodic antenna based on artificial surface plasmon |
| CN113964540A (en) * | 2021-10-27 | 2022-01-21 | 南京航空航天大学 | Device and method for regulating and controlling moire effect artificial surface plasmon dispersion |
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Cited By (16)
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| CN105006616B (en) * | 2015-07-30 | 2018-11-20 | 上海理工大学 | A kind of THz wave time-domain spectral system based on ultra-wideband chip |
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| CN109473757B (en) * | 2015-07-30 | 2020-03-10 | 上海理工大学 | Broadband transmission line chip |
| CN109473757A (en) * | 2015-07-30 | 2019-03-15 | 上海理工大学 | A kind of wideband transmission line chip |
| CN105119029A (en) * | 2015-09-16 | 2015-12-02 | 江苏师范大学 | High-efficient broadband band-pass filter based on artificial surface Plasmon |
| CN105261841A (en) * | 2015-09-16 | 2016-01-20 | 东南大学 | Quasi-surface plasmon-based leaky-wave antenna |
| CN105119029B (en) * | 2015-09-16 | 2018-03-27 | 江苏师范大学 | A kind of high efficiency and broad band bandpass filter based on artificial surface phasmon |
| CN105280996A (en) * | 2015-10-08 | 2016-01-27 | 中国矿业大学 | Artificial surface plasmon broadband bandstop filter based on composite U-shaped groove structure |
| CN105428774A (en) * | 2015-12-21 | 2016-03-23 | 上海理工大学 | Method for increasing pseudo surface plasma transmission bandwidth |
| CN105958162B (en) * | 2016-06-15 | 2018-11-09 | 六盘水师范学院 | A kind of microwave low-pass filter with semi arch groove structure |
| CN105958162A (en) * | 2016-06-15 | 2016-09-21 | 六盘水师范学院 | Microwave low-pass filter with semi-circular-arc groove structure |
| CN106025462A (en) * | 2016-06-28 | 2016-10-12 | 江苏赛博防务技术有限公司 | Band elimination filter based on artificial surface plasmon and complementary split-ring resonator |
| CN110444865A (en) * | 2019-08-06 | 2019-11-12 | 南京邮电大学 | Log-periodic antenna based on artificial surface plasmon |
| CN110444865B (en) * | 2019-08-06 | 2021-10-29 | 南京邮电大学 | Log periodic antenna based on artificial surface plasmon polariton |
| CN113964540A (en) * | 2021-10-27 | 2022-01-21 | 南京航空航天大学 | Device and method for regulating and controlling moire effect artificial surface plasmon dispersion |
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Application publication date: 20150729 |