CN1321349C - Tunable laminar microwave left-hand material - Google Patents
Tunable laminar microwave left-hand material Download PDFInfo
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Abstract
Description
技术领域 本发明涉及一种左手材料，特别涉及一种透射带宽、透射峰频率和强度可调谐的层状微波左手材料。Technical Field The present invention relates to a left-handed material, in particular to a layered microwave left-handed material with tunable transmission bandwidth, transmission peak frequency and intensity.
背景技术 左手材料(left-handed metamaterials)是一种自然界中不存在的人工复合结构材料，在某一频段内介电常数和磁导率同时为负，在其中传播的电磁波的相速度和群速度方向相反，从而呈现出许多新颖的光学特性，如反常Doppler效应、反常Cherenkov效应、完美透镜效应、负折射效应等。因而在无线电通信、超敏感传感器、医学诊断成像等领域有重要的应用价值。目前研究者所设计的实现负磁导率的开口谐振环多为圆形和方形；材料的微波电磁谐振行为，即其微波透射带宽、透射峰频率和强度不可调节，这为其实际应用带来了很大的局限性。Background technology Left-handed materials (left-handed metamaterials) are artificial composite structural materials that do not exist in nature. The dielectric constant and magnetic permeability are negative at the same time in a certain frequency band, and the phase velocity and group velocity of electromagnetic waves propagating in it are The direction is opposite, thus showing many novel optical properties, such as abnormal Doppler effect, abnormal Cherenkov effect, perfect lens effect, negative refraction effect and so on. Therefore, it has important application value in the fields of radio communication, ultra-sensitive sensor, medical diagnostic imaging and so on. At present, the split resonators designed by researchers to achieve negative magnetic permeability are mostly circular and square; the microwave electromagnetic resonance behavior of the material, that is, its microwave transmission bandwidth, transmission peak frequency and intensity cannot be adjusted, which brings great challenges to its practical application. a great limitation.
发明内容 本发明的目的是提供一种可调谐层状微波左手材料。其结构单元为金属六边形开口谐振环和金属线。相同几何参数结构单元按照一定的周期排列成层状材料，该材料在开口谐振环的谐振频率附近一频率段内具有左手特性。通过将某些结构单元替换为不同几何参数结构单元，即引入缺陷谐振环而制得透射带宽达1160MHz、透射峰频率在8820MHz～9000MHz范围内可调控、透射峰强度可在-19dB～-38dB范围内变化的可调谐的层状微波左手材料。SUMMARY OF THE INVENTION The purpose of the present invention is to provide a tunable layered microwave left-handed material. Its structural unit is a metal hexagonal split resonant ring and a metal wire. Structural units with the same geometric parameters are arranged according to a certain period to form a layered material, and the material has left-handed characteristics in a frequency range near the resonant frequency of the split resonant ring. By replacing some structural units with structural units with different geometric parameters, that is, introducing a defect resonant ring, the transmission bandwidth can reach 1160MHz, the transmission peak frequency can be adjusted within the range of 8820MHz～9000MHz, and the transmission peak intensity can be within the range of -19dB～-38dB Intra-variable tunable layered microwave left-handed materials.
附图说明Description of drawings
图1单层可调微波左手材料样品。Fig. 1 Monolayer tunable microwave left-handed material sample.
图2主谐振环为SRRs(d1/d2＝1.6/3.0mm)，点缺陷分别为空位、SRRs(d1/d2＝1.0/3.4mm)和SRRs(d1/d2＝1.0/4.6mm)的单层微波左手材料的微波透射曲线。Figure 2 The main resonant ring is SRRs (d 1 /d 2 =1.6/3.0mm), and the point defects are vacancies, SRRs (d 1 /d 2 =1.0/3.4mm) and SRRs (d 1 /d 2 =1.0/ 4.6mm) microwave transmission curve of a single-layer microwave left-handed material.
图3主谐振环为SRRs(d1/d2＝1.0/2.6mm)，点缺陷分别为空位、SRRs(d1/d2＝1.0/2.2mm)、SRRs(d1/d2＝1.0/3.4mm)和SRRs(d1/d2＝1.0/4.0mm)的单层微波左手材料的微波透射曲线。Figure 3 The main resonant ring is SRRs (d 1 /d 2 =1.0/2.6mm), and the point defects are vacancies, SRRs (d 1 /d 2 =1.0/2.2mm), SRRs (d 1 /d 2 =1.0/ 3.4mm) and SRRs (d 1 /d 2 = 1.0/4.0mm) microwave transmission curves of single-layer microwave left-handed materials.
图4主谐振环为SRRs(d1/d2＝2.0/4.0mm)，点缺陷分别为空位、SRRs(d1/d2＝2.0/2.5mm)的层数为2的微波左手材料的微波透射曲线。Figure 4 The main resonant ring is SRRs (d 1 /d 2 =2.0/4.0mm), the point defects are vacancies, and the microwave left-handed material with SRRs (d 1 /d 2 =2.0/2.5mm) has 2 layers transmission curve.
图5主谐振环为SRRs(d1/d2＝1.0/2.6mm)，点缺陷分别为空位、SRRs(d1/d2＝1.0/2.0mm)和SRRs(d1/d2＝1.0/3.0mm)的层数为3的微波左手材料的微波透射曲线。Figure 5. The main resonant ring is SRRs (d 1 /d 2 =1.0/2.6mm), and the point defects are vacancies, SRRs (d 1 /d 2 =1.0/2.0mm) and SRRs (d 1 /d 2 =1.0/ 3.0mm) microwave transmission curve of microwave left-handed material with 3 layers.
图6主谐振环为SRRs(d1/d2＝1.0/2.6mm)，线缺陷分别为空位、SRRs(d1/d2＝1.0/2.0mm)、SRRs(d1/d2＝1.0/3.0mm)和SRRs(d1/d2＝1.0/4.2mm)的层数为3的微波左手材料的微波透射曲线。Figure 6. The main resonant ring is SRRs (d 1 /d 2 =1.0/2.6mm), and the line defects are vacancies, SRRs (d 1 /d 2 =1.0/2.0mm), SRRs (d 1 /d 2 =1.0/ 3.0mm) and SRRs (d 1 /d 2 = 1.0/4.2mm) microwave transmission curves of microwave left-handed materials with 3 layers.
具体实施方式采用电路板刻蚀技术，在厚度为0.8mm的环氧酚醛玻璃纤维PCB基板某一面上刻蚀出金属铜开口谐振环阵列，其中心间距为3.0～10.0mm，内环的内切圆直径为1.0～3.0mm，外环的内切圆直径为2.0～4.0mm，开口g＝0.1～1.0mm，线宽为c＝0.3mm，谐振环厚度为0.02mm；在PCB基板另一面刻蚀出平行金属铜线阵列，其中心间距为3.0～10.0mm，长度为0.6～10.0mm，线宽为0.1～0.5mm，厚度为0.01～0.03mm；将某些结构单元中的开口谐振环用空位或不同几何尺寸的谐振环替换，缺陷谐振环的内环内切圆直径为0.6mm～4.0mm，外环内切圆直径为1.0mm～5.0mm，开口间距为0.05mm～0.9mm，线宽为0.1mm～0.5mm，制得各种结构单元。将所制得的金属铜结构单元阵列切割成多个结构单元为一列的条状结构，并将条状PCB基板平行且等间距排列制得层状微波左手材料；调节其条状PCB基板层数为1～10，制得微波透射带宽、透射峰频率和强度可调谐的层状微波左手材料。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Using circuit board etching technology, an array of metallic copper split resonant rings is etched on one side of an epoxy phenolic glass fiber PCB substrate with a thickness of 0.8mm. The diameter of the circle is 1.0~3.0mm, the diameter of the inscribed circle of the outer ring is 2.0~4.0mm, the opening g=0.1~1.0mm, the line width is c=0.3mm, the thickness of the resonant ring is 0.02mm; engraved on the other side of the PCB substrate Etch parallel metal copper wire arrays, the center distance of which is 3.0-10.0mm, the length is 0.6-10.0mm, the line width is 0.1-0.5mm, and the thickness is 0.01-0.03mm; the split resonator ring in some structural units is used Replacement of vacant or different geometric size resonant rings, the diameter of the inscribed circle of the inner ring of the defective resonant ring is 0.6mm ~ 4.0mm, the diameter of the inscribed circle of the outer ring is 1.0mm ~ 5.0mm, the opening distance is 0.05mm ~ 0.9mm, the line The width is 0.1mm to 0.5mm, and various structural units are prepared. Cut the prepared metal copper structural unit array into a strip structure with multiple structural units in a row, and arrange the strip PCB substrates in parallel and at equal intervals to obtain a layered microwave left-handed material; adjust the number of strip PCB substrate layers From 1 to 10, a layered microwave left-handed material with tunable microwave transmission bandwidth, transmission peak frequency and intensity can be obtained.
本发明的实现过程和材料的性能由实施例和附图说明：The realization process of the present invention and the performance of material are explained by embodiment and accompanying drawing:
实施例一：Embodiment one:
采用电路板刻蚀技术，在厚度为0.8mm的环氧酚醛玻璃纤维PCB基板某一面上刻蚀出金属铜开口谐振环阵列，其中心间距为7.0mm，内外环的内切圆直径分别为1.6mm和3.0mm，开口g＝0.3mm，线宽为c＝0.3mm，谐振环厚度为0.02mm；在PCB基板另一面刻蚀出平行金属铜线阵列，其中心间距为7.0mm，长度为9.9mm，线宽为1.6mm，厚度为0.02mm；将条中心结构单元中的开口谐振环用空位或不同几何尺寸的谐振环替换，缺陷谐振环的内环内切圆直径为1.0mm，外环内切圆直径分别为3.4mm和4.6mm，开口间距为0.3mm，线宽为0.3mm，制得各种结构单元。将所制得的金属铜结构单元阵列切割成7个结构单元为一列的条状结构，制得微波透射带宽、透射峰频率和强度可调谐的层数为1的微波左手材料。样品的微波透射曲线如附图2所示。Using circuit board etching technology, a metal copper split resonator ring array is etched on one side of the epoxy phenolic glass fiber PCB substrate with a thickness of 0.8mm. The center distance is 7.0mm, and the diameters of the inscribed circles of the inner and outer rings are 1.6 mm and 3.0mm, the opening g=0.3mm, the line width c=0.3mm, the thickness of the resonant ring is 0.02mm; on the other side of the PCB substrate, a parallel metal copper wire array is etched, the center distance is 7.0mm, and the length is 9.9mm mm, the line width is 1.6mm, and the thickness is 0.02mm; replace the split resonant ring in the central structural unit of the bar with a vacancy or a resonant ring with a different geometric size. The diameter of the inner circle of the defective resonant ring is 1.0mm, and the outer ring The diameters of the inscribed circles are 3.4mm and 4.6mm, the opening spacing is 0.3mm, and the line width is 0.3mm, and various structural units are prepared. The obtained metal copper structure unit array was cut into a strip structure with 7 structure units in a row, and a microwave left-handed material with tunable microwave transmission bandwidth, transmission peak frequency and intensity was prepared with a layer number of 1. The microwave transmission curve of the sample is shown in Figure 2.
实施例二：Embodiment two:
采用电路板刻蚀技术，在厚度为0.8mm的环氧酚醛玻璃纤维PCB基板某一面上刻蚀出金属铜开口谐振环阵列，其中心间距为7.0mm，内外环的内切圆直径分别为1.0mm和2.6mm，开口g＝0.3mm，线宽为c＝0.3mm，谐振环厚度为0.02mm；在PCB基板另一面刻蚀出平行金属铜线阵列，其中心间距为7.0mm，长度为9.9mm，线宽为0.5mm，厚度为0.02mm；将条中心结构单元中的开口谐振环用空位或不同几何尺寸的谐振环替换，缺陷谐振环的内环内切圆直径为1.0mm，外环内切圆直径分别为2.2mm，3.4mm和4.0mm，开口间距为0.3mm，线宽为0.3mm，制得各种结构单元。将所制得的金属铜结构单元阵列切割成7个结构单元为一列的条状结构，制得微波透射带宽、透射峰频率和强度可调谐的层数为1的微波左手材料。样品的微波透射曲线如附图3所示。Using circuit board etching technology, an array of metal copper split resonant rings is etched on one side of the epoxy phenolic glass fiber PCB substrate with a thickness of 0.8mm. The center distance is 7.0mm, and the diameters of the inscribed circles of the inner and outer rings are 1.0 mm and 2.6mm, the opening g=0.3mm, the line width c=0.3mm, the thickness of the resonant ring is 0.02mm; on the other side of the PCB substrate, a parallel metal copper wire array is etched, the center distance is 7.0mm, and the length is 9.9mm mm, the line width is 0.5mm, and the thickness is 0.02mm; replace the open resonant ring in the central structural unit of the bar with a vacancy or a resonant ring with a different geometric size. The diameter of the inner circle of the defective resonant ring is 1.0mm, and the outer ring The diameters of the inscribed circles are 2.2mm, 3.4mm and 4.0mm, the opening spacing is 0.3mm, and the line width is 0.3mm, and various structural units are prepared. The obtained metal copper structure unit array was cut into a strip structure with 7 structure units in a row, and a microwave left-handed material with tunable microwave transmission bandwidth, transmission peak frequency and intensity was prepared with a layer number of 1. The microwave transmission curve of the sample is shown in Figure 3.
实施例三：Embodiment three:
采用电路板刻蚀技术，在厚度为0.8mm的环氧酚醛玻璃纤维PCB基板某一面上刻蚀出金属铜开口谐振环阵列，其中心间距为7.0mm，内外环的内切圆直径分别为2.0mm和4.0mm，开口g＝0.3mm，线宽为c＝0.3mm，谐振环厚度为0.02mm；在PCB基板另一面刻蚀出平行金属铜线阵列，其中心间距为7.0mm，长度为9.9mm，线宽为1.6mm，厚度为0.02mm；将条中心结构单元中的开口谐振环用空位或不同几何尺寸的谐振环替换，缺陷谐振环的内环内切圆直径为2.0mm，外环内切圆直径分别为2.5mm，开口间距为0.3mm，线宽为0.3mm，制得各种结构单元。将所制得的金属铜结构单元阵列切割成7个结构单元为一列的条状结构，并将2条PCB基板平行且以间距7.0mm排列制得微波透射带宽、透射峰频率和强度可调谐的层数为2的微波左手材料。样品的微波透射曲线如附图4所示。Using circuit board etching technology, a metal copper split resonant ring array is etched on one side of the epoxy phenolic glass fiber PCB substrate with a thickness of 0.8mm. The center distance is 7.0mm, and the diameters of the inscribed circles of the inner and outer rings are 2.0mm. mm and 4.0mm, the opening g=0.3mm, the line width c=0.3mm, the thickness of the resonant ring is 0.02mm; on the other side of the PCB substrate, a parallel metal copper wire array is etched, the center distance is 7.0mm, and the length is 9.9mm mm, the line width is 1.6mm, and the thickness is 0.02mm; replace the open resonant ring in the central structural unit of the bar with a vacancy or a resonant ring with a different geometric size. The diameter of the inner circle of the defective resonant ring is 2.0mm, and the outer ring The diameter of the inscribed circle is 2.5 mm, the spacing between the openings is 0.3 mm, and the line width is 0.3 mm, and various structural units are prepared. Cut the prepared metal copper structural unit array into a strip structure with 7 structural units in a row, and arrange two PCB substrates in parallel with a pitch of 7.0 mm to obtain a microwave transmission bandwidth, transmission peak frequency and intensity tunable Microwave left-hand material with 2 layers. The microwave transmission curve of the sample is shown in Figure 4.
实施例四：Embodiment four:
采用电路板刻蚀技术，在厚度为0.8mm的环氧酚醛玻璃纤维PCB基板某一面上刻蚀出金属铜开口谐振环阵列，其中心间距为7.0mm，内外环的内切圆直径分别为1.0mm和2.6mm，开口g＝0.3mm，线宽为c＝0.3mm，谐振环厚度为0.02mm；在PCB基板另一面刻蚀出平行金属铜线阵列，其中心间距为7.0mm，长度为9.9mm，线宽为0.5mm，厚度为0.02mm；将所制得的金属铜结构单元阵列切割成7个结构单元为一列的条状结构，将3条PCB基板平行且等间距5mm排列制得层数为3的微波左手材料。将中间条中心结构单元中的开口谐振环用空位或不同几何尺寸的点谐振环替换，缺陷谐振环的内环内切圆直径为1.0mm，外环内切圆直径为2.0mm和3.0mm，开口间距为0.3mm，线宽为0.3mm，制得微波透射带宽、透射峰频率和强度可调谐的层数为3的微波左手材料。样品的微波透射曲线如附图5所示。Using circuit board etching technology, an array of metal copper split resonant rings is etched on one side of the epoxy phenolic glass fiber PCB substrate with a thickness of 0.8mm. The center distance is 7.0mm, and the diameters of the inscribed circles of the inner and outer rings are 1.0 mm and 2.6mm, the opening g=0.3mm, the line width c=0.3mm, the thickness of the resonant ring is 0.02mm; on the other side of the PCB substrate, a parallel metal copper wire array is etched, the center distance is 7.0mm, and the length is 9.9mm mm, the line width is 0.5mm, and the thickness is 0.02mm; the prepared metal copper structural unit array is cut into a strip structure with 7 structural units in a row, and the 3 PCB substrates are arranged in parallel and at equal intervals of 5mm to obtain a layer Microwave left-hand material with number 3. Replace the open resonant ring in the central structural unit of the middle bar with a vacancy or a point resonant ring of different geometric size. The diameter of the inner inscribed circle of the defective resonant ring is 1.0 mm, and the diameter of the outer ring inscribed circle is 2.0 mm and 3.0 mm. The spacing between the openings is 0.3 mm, and the line width is 0.3 mm. A microwave left-handed material with tunable microwave transmission bandwidth, transmission peak frequency and intensity is prepared with 3 layers. The microwave transmission curve of the sample is shown in Fig. 5 .
实施例五：Embodiment five:
采用电路板刻蚀技术，在厚度为0.8mm的环氧酚醛玻璃纤维PCB基板某一面上刻蚀出金属铜开口谐振环阵列，其中心间距为7.0mm，内外环的内切圆直径分别为1.0mm和2.6mm，开口g＝0.3mm，线宽为c＝0.3mm，谐振环厚度为0.02mm；在PCB基板另一面刻蚀出平行金属铜线阵列，其中心间距为7.0mm，长度为9.9mm，线宽为0.5mm，厚度为0.02mm；将所制得的金属铜结构单元阵列切割成7个结构单元为一列的条状结构，将3条PCB基板平行且等间距5mm排列制得层数为3的微波左手材料。将每条中心结构单元中的开口谐振环用空位或不同几何尺寸的谐振环替换，缺陷谐振环的内环内切圆直径为1.0mm，外环内切圆直径为2.0mm、3.0mm和4.2mm，开口间距为0.3mm，线宽为0.3mm，制得微波透射带宽、透射峰频率和强度可调谐的层数为3的微波左手材料。样品的微波透射曲线如附图6所示。Using circuit board etching technology, an array of metal copper split resonant rings is etched on one side of the epoxy phenolic glass fiber PCB substrate with a thickness of 0.8mm. The center distance is 7.0mm, and the diameters of the inscribed circles of the inner and outer rings are 1.0 mm and 2.6mm, the opening g=0.3mm, the line width c=0.3mm, the thickness of the resonant ring is 0.02mm; on the other side of the PCB substrate, a parallel metal copper wire array is etched, the center distance is 7.0mm, and the length is 9.9mm mm, the line width is 0.5mm, and the thickness is 0.02mm; the prepared metal copper structural unit array is cut into a strip structure with 7 structural units in a row, and the 3 PCB substrates are arranged in parallel and at equal intervals of 5mm to obtain a layer Microwave left-hand material with number 3. Replace the split resonant ring in each central structural unit with a vacancy or a resonant ring of different geometric size. The diameter of the inner inscribed circle of the defective resonant ring is 1.0 mm, and the diameter of the outer ring inscribed circle is 2.0 mm, 3.0 mm and 4.2 mm. mm, the spacing between openings is 0.3mm, and the line width is 0.3mm, and the microwave left-handed material with tunable microwave transmission bandwidth, transmission peak frequency and intensity is prepared with 3 layers. The microwave transmission curve of the sample is shown in Fig. 6 .
Claims (4)
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| CN103367847A (en) * | 2012-04-05 | 2013-10-23 | 北京师范大学 | Filtering method for inclined-incidence electromagnetic waves |
| CN103346407B (en) * | 2013-06-15 | 2015-05-27 | 厦门大学 | Left-handed material formed by E-shaped mutually embedded structures and provided with double-rod-shaped tuning structure |
| CN112909553A (en) * | 2021-01-15 | 2021-06-04 | 重庆邮电大学 | Circular polarization transmission array antenna unit based on rotation phase modulation method |
Citations (3)
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| US20010038325A1 (en) * | 2000-03-17 | 2001-11-08 | The Regents Of The Uinversity Of California | Left handed composite media |
| CN1428017A (en) * | 2000-03-06 | 2003-07-02 | 马科尼光学元件有限公司 | Structure with switchable magnetic properties |
| US6608811B1 (en) * | 1999-01-04 | 2003-08-19 | Marconi Caswell Limited | Structure with magnetic properties |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6608811B1 (en) * | 1999-01-04 | 2003-08-19 | Marconi Caswell Limited | Structure with magnetic properties |
| CN1428017A (en) * | 2000-03-06 | 2003-07-02 | 马科尼光学元件有限公司 | Structure with switchable magnetic properties |
| US20010038325A1 (en) * | 2000-03-17 | 2001-11-08 | The Regents Of The Uinversity Of California | Left handed composite media |
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| Title |
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| Electromagnetic resonances in individualandcoupledsplit-ringresonators PHILIPPE GAY.BALMAZ et al,JOURNAL OF APPLIED PHYSICS,Vol.92 No.5 2002 * |
| Electromagnetic resonances in individualandcoupledsplit-ringresonators PHILIPPE GAY.BALMAZ et al,JOURNAL OF APPLIED PHYSICS,Vol.92 No.5 2002;负介电常数和负磁导率微波媒质的实验 隋强 李廉林 李芳，中国科学(G辑)，第33卷第5期 2003;用于构成左手化材料(LHMs)的开口谐振环的研究 张富利 赵乾 刘亚红 赵晓鹏，北京广播学院学报(自然科学版)，第10卷第4期 2003 * |
| 用于构成左手化材料(LHMs)的开口谐振环的研究 张富利 赵乾 刘亚红 赵晓鹏，北京广播学院学报(自然科学版)，第10卷第4期 2003 * |
| 负介电常数和负磁导率微波媒质的实验 隋强 李廉林 李芳，中国科学(G辑)，第33卷第5期 2003 * |
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