本文選題：超材料 + 吸波器��； 參考：《中北大學(xué)》2017年碩士論文

【摘要】：電磁超材料不僅代表了基于人工復(fù)合亞波長微結(jié)構(gòu)的新型功能材料,更意味著定制化調(diào)控電磁響應(yīng),任意裁剪電磁波的逆向設(shè)計思維,即需要什么樣的電磁響應(yīng),設(shè)計相應(yīng)的微結(jié)構(gòu)。其通常具有自然界中常規(guī)材料所不具備的一些奇特電磁特性,在電磁器件、生化檢測、電磁隱身與防護(hù)等領(lǐng)域具有廣泛的應(yīng)用前景。通過合理設(shè)計超材料的微結(jié)構(gòu)形狀、尺寸、材料、分布等,使其整體波阻抗等于自由空間,達(dá)到完美匹配,進(jìn)而實現(xiàn)對特定頻段電磁波的完美吸收�，F(xiàn)有的超材料吸波器的吸波頻帶的個數(shù)不大于其諧振器的個數(shù),增加吸波器的吸波頻帶必須適當(dāng)增加諧振器的個數(shù),勢必會增加吸波器的設(shè)計和加工難度,本文利用數(shù)量更少的諧振器獲取更多的諧振頻帶和更好的吸波性能。本文首先綜合應(yīng)用理論分析和數(shù)值模擬相結(jié)合的方法,對基于周期性雙方環(huán)諧振器的吸波器在毫米波頻段的多頻吸收機(jī)制進(jìn)行了系統(tǒng)研究�；谖ɡ碚摵蜕⑸淅碚撛O(shè)計了三款基于周期性“回”字型微結(jié)構(gòu)的超材料多頻吸波器,運用全波分析法計算TE和TM偏振波垂直入射時三款吸波器的吸波率曲線,發(fā)現(xiàn)通過調(diào)節(jié)尺寸,雙方環(huán)諧振器可以實現(xiàn)雙頻、三頻、四頻諧振,并根據(jù)強諧振時雙方環(huán)及其內(nèi)外環(huán)的表面電場分布探索多頻吸波的物理機(jī)制。并逐個分析尺寸、材料和入射波等參數(shù)對吸波性能的具體影響。接著,設(shè)計了基于RZJ-304正性光刻膠的UV-LIGA工藝和磁控濺射技術(shù)的在環(huán)氧樹脂板上加工周期性雙方環(huán)“三明治”式吸波器的便捷工藝,詳細(xì)探討了整套工藝的工藝流程,參數(shù)影響和注意事項,并用對制備的三款樣片進(jìn)行形貌表征以證實工藝的可行性。其次,詳細(xì)地介紹了常用的三種測試方案的測試步驟以及注意事項。本文折中選擇THz-TDS測試方法,發(fā)現(xiàn)TDS1008實測三款樣片得到吸波率曲線在低頻段與電磁仿真結(jié)果大致重合,但在高頻段時與數(shù)值仿真結(jié)果有些許出入,吸波率的實測值較仿真值有輕微降低。最后,通過微結(jié)構(gòu)形貌表征對這些偏差的可能來源進(jìn)行了合理剖析。最后,對論文的主要工作和結(jié)論及其創(chuàng)新之處進(jìn)行總結(jié)歸納,并對研究的不足和超材料吸波器下一步的發(fā)展進(jìn)行總結(jié)和展望。
[Abstract]:Electromagnetic supermaterial not only represents a new functional material based on artificial composite subwavelength microstructure, but also means customizing the control of electromagnetic response, tailoring the inverse design thinking of electromagnetic wave, that is, what kind of electromagnetic response is needed. The corresponding microstructures are designed. It usually has some peculiar electromagnetic properties which are not possessed by conventional materials in nature. It has a wide application prospect in electromagnetic devices, biochemical detection, electromagnetic stealth and protection and so on. By reasonably designing the microstructure shape, size, material and distribution of the metamaterials, the integral wave impedance is equal to the free space, and the perfect matching is achieved, and the perfect absorption of the electromagnetic waves in the specific frequency band is realized. The number of absorbing frequency bands of existing metamaterial absorbers is not larger than the number of resonators. To increase the frequency band of absorbers, it is necessary to increase the number of resonators properly, which will inevitably increase the difficulty of designing and processing the absorbers. In this paper, a smaller number of resonators are used to obtain more resonant frequency bands and better absorbing performance. In this paper, the multi-frequency absorption mechanism of periodic two-ring resonator in millimeter-wave band is systematically studied by combining theoretical analysis with numerical simulation. Based on absorbing theory and scattering theory, three kinds of supermaterial multi-frequency absorbers based on periodic "echo" microstructures are designed. The absorptivity curves of three kinds of absorbers when te and TM polarized waves are perpendicular to incident are calculated by using full wave analysis method. It is found that the double frequency, three frequency and four frequency resonance can be realized by adjusting the size of the double ring resonator, and the physical mechanism of the multi-frequency wave absorption can be explored according to the surface electric field distribution of the two rings and their inner and outer rings when the resonance is strong. The effects of parameters such as size, material and incident wave on the absorbing performance are analyzed one by one. Then, the UV-LIGA process based on RZJ-304 positive photoresist and the convenient technology of magnetron sputtering for processing periodic double ring sandwich type wave absorber on epoxy resin plate are designed, and the process flow of the whole process is discussed in detail. The influence of the parameters and the points for attention were discussed. The three samples were characterized by morphologies to verify the feasibility of the process. Secondly, the test steps and points for attention of the three commonly used test schemes are introduced in detail. In this paper, the THz-TDS test method is chosen, and it is found that the absorbing rate curve obtained by TDS1008 is approximately in agreement with the electromagnetic simulation results in the low frequency band, but it is slightly different from the numerical simulation results in the high frequency band. The measured value of absorbing rate is slightly lower than that of simulation. Finally, the possible sources of these deviations are analyzed by means of microstructure and morphology characterization. Finally, the main work, conclusions and innovations of the paper are summarized and summarized, and the shortcomings of the research and the next development of the metamaterial absorber are summarized and prospected.
【學(xué)位授予單位】：中北大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TB34

【參考文獻(xiàn)】

相關(guān)期刊論文 前7條

1 張勇;張斌珍;段俊萍;王萬軍;;超材料在完美吸波器中的應(yīng)用[J];材料工程;2016年11期

2 張勇;段俊萍;張文棟;王萬軍;張斌珍;;基于超材料的超薄雙頻吸波器設(shè)計與制造[J];材料導(dǎo)報;2016年16期

3 邢濤;胡慶榮;李軍;王冠勇;;機(jī)載毫米波高分辨大斜視合成孔徑雷達(dá)成像[J];浙江大學(xué)學(xué)報(工學(xué)版);2015年12期

4 張勇;張斌珍;段俊萍;王萬軍;;左手材料的研究進(jìn)展與應(yīng)用前景[J];材料導(dǎo)報;2015年23期

5 李文強;曹祥玉;高軍;趙一;楊歡歡;劉濤;;基于超材料吸波體的低雷達(dá)散射截面波導(dǎo)縫隙陣列天線[J];物理學(xué)報;2015年09期

6 黃銳;許向東;敖天宏;何瓊;馬春前;溫粵江;孫自強;蔣亞東;;太赫茲超材料響應(yīng)頻率及頻帶的調(diào)控[J];紅外與毫米波學(xué)報;2015年01期

7 何華輝,吳明忠,趙振聲;多晶鐵纖維吸收劑微波電磁參數(shù)的各向異性研究[J];物理學(xué)報;1999年S1期

，

本文編號：1820337