本文選題：微波段 + 太赫茲波段�。� 參考：《東南大學(xué)》2015年碩士論文

【摘要】：基于漫反射原理的低散射人工電磁表面由大量具有隨機(jī)相位分布的亞波長(zhǎng)單元構(gòu)成。當(dāng)電磁波入射到該電磁表面時(shí),其能量將分布在各個(gè)方向中。通過(guò)合理地設(shè)計(jì)表面單元的幾何結(jié)構(gòu)和排布方式,可以有效地降低所覆蓋金屬目標(biāo)的后向散射截面,對(duì)于隱身表面設(shè)計(jì)具有重要的意義。本文的主要工作包括以下幾個(gè)方面：(1)設(shè)計(jì)了微波段單層寬帶低散射人工電磁表面,與多層結(jié)構(gòu)相比,單層人工電磁表面在空間分布上更加緊湊,易于加工,更適合共形方面的應(yīng)用。設(shè)計(jì)的單層低散射人工電磁表面單元的移相范圍在360°以上,且反射相位與單元的尺寸滿足線性變化關(guān)系。將該單層低散射人工電磁表面覆蓋在目標(biāo)表面上,電磁波照射到低散射人工電磁表面后向各個(gè)方向散射。與反射陣的高定向散射方向圖不同,低散射人工電磁表面的散射能量分布在各個(gè)方向上,有效降低了目標(biāo)被雷達(dá)探測(cè)到的概率。(2)將微波段低散射人工電磁表面的設(shè)計(jì)方法拓展到了太赫茲波段,提出了太赫茲單層低散射人工電磁表面。由于太赫茲加工工藝的限制,為了在整個(gè)波段內(nèi)獲得較大的相移范圍,設(shè)計(jì)的低散射人工電磁表面采用了兩種亞波長(zhǎng)微帶單元,這兩種單元都由內(nèi)環(huán)和外環(huán)組成。設(shè)計(jì)的兩種單元的形狀關(guān)于x軸方向和y軸方向是軸對(duì)稱的,具有極化不敏感的特點(diǎn)。該太赫茲低散射人工電磁表面具有較低的散射系數(shù),有效地隱匿了目標(biāo)。
[Abstract]:The low scattering artificial electromagnetic surface based on diffuse reflection principle is composed of a large number of subwavelength units with random phase distribution. When the electromagnetic wave is incident to the electromagnetic surface, its energy will be distributed in all directions. By reasonably designing the geometry and arrangement of the surface elements, the backscattering cross section of the covered metal target can be effectively reduced, which is of great significance for the design of the stealth surface. The main work of this paper includes the following aspects: (1) the monolayer wideband low scattering artificial electromagnetic surface of microwave section is designed. Compared with the multilayer structure, the monolayer artificial electromagnetic surface is more compact in spatial distribution and easy to process. More suitable for conformal applications. The phase shift range of the single layer low scattering artificial electromagnetic surface element is more than 360 擄, and the reflection phase and the size of the element are linearly varying. The monolayer artificial electromagnetic surface is covered on the target surface and the electromagnetic wave is radiated to the low scattering artificial electromagnetic surface and scattered in all directions. Different from the high directional scattering pattern of the reflection array, the scattering energy of the low scattering artificial electromagnetic surface is distributed in all directions. The probability of target detected by radar is reduced effectively. The design method of microwave band low scattering artificial electromagnetic surface is extended to terahertz band, and a terahertz monolayer low scattering artificial electromagnetic surface is proposed. Due to the limitation of terahertz processing technology, in order to obtain a large phase-shift range in the whole band, two kinds of sub-wavelength microstrip elements are used in the design of the low scattering artificial electromagnetic surface, both of which are composed of inner and outer loops. The shapes of the two elements are axisymmetric and polarization-insensitive with respect to the x axis and y axis directions. The terahertz low scattering artificial electromagnetic surface has low scattering coefficient, which effectively hides the target.
【學(xué)位授予單位】：東南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN011

【相似文獻(xiàn)】

相關(guān)期刊論文 前9條

1 黃志洵;微波段金屬表面問(wèn)題的基本理論和測(cè)量(續(xù))[J];物理;1981年07期

2 龍傳安,王國(guó)茂,劉萬(wàn)華,李來(lái)政,方治元;微波段電子順磁共振實(shí)驗(yàn)的改進(jìn)[J];華中師院學(xué)報(bào)(自然科學(xué)版);1981年02期

3 關(guān)福民;衛(wèi)星高度計(jì)及其應(yīng)用[J];海洋科學(xué);1989年06期

4 魏兵;葛德彪;王飛;龔書(shū)喜;;微波段電單軸介質(zhì)主軸方向確定及參數(shù)反演[J];系統(tǒng)工程與電子技術(shù);2010年10期

5 董玫;趙永波;張守宏;;米波段下海面多徑模型研究[J];電子學(xué)報(bào);2009年06期

6 龍傳安;王國(guó)茂;劉萬(wàn)華;李來(lái)政;方治元;;微波段電子自旋共振實(shí)驗(yàn)內(nèi)容的擴(kuò)充與改進(jìn)[J];物理實(shí)驗(yàn);1981年03期

7 汪照;李有明;朱星;;基于VHF-FM微波段的室內(nèi)人體探測(cè)方法[J];寧波大學(xué)學(xué)報(bào)(理工版);2014年02期

8 馬�？�;郭立新;楊瑞科;;中國(guó)北方大氣湍流中微波傳播閃爍問(wèn)題研究[J];微波學(xué)報(bào);2009年04期

9 ;[J];;年期

相關(guān)會(huì)議論文 前1條

1 郝晉;江漢保;李祥林;肖寶瑾;孫明義;;微波頻段模擬人體肌肉組織配方[A];1995年全國(guó)微波會(huì)議論文集（下冊(cè)）[C];1995年

相關(guān)博士學(xué)位論文 前1條

1 沈健;磁性材料在微波及太赫茲波段的動(dòng)力學(xué)研究[D];電子科技大學(xué);2012年

相關(guān)碩士學(xué)位論文 前3條

1 董荻莎;低散射人工電磁表面的散射特性研究[D];東南大學(xué);2015年

2 楊毓嵐;微波段天線反射面沖壓成形仿真[D];重慶大學(xué);2006年

3 顧辰東;基于人工介電材料的微波段變換光學(xué)器件研制[D];蘇州大學(xué);2014年

，

本文編號(hào)：1846239