本文選題：高功率微波　切入點(diǎn)：漏波天線　出處：《國防科學(xué)技術(shù)大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著高功率微波(High Power Microwave,HPM)技術(shù)向?qū)嵱没l(fā)展,研制結(jié)構(gòu)緊湊、輕便、環(huán)境適應(yīng)性強(qiáng)的發(fā)射天線成為應(yīng)用HPM技術(shù)的迫切需求。針對L波段高功率微波輻射既要滿足高功率容量、又要在較小的尺寸內(nèi)實(shí)現(xiàn)高效率輻射的特殊需求,本文重點(diǎn)研究了一種漏波波導(dǎo)的強(qiáng)耦合設(shè)計(jì)方法,并設(shè)計(jì)了長度相對較短的L波段漏波波導(dǎo)天線,所設(shè)計(jì)的漏波波導(dǎo)天線具有功率容量高、便于組陣等特點(diǎn)。主要內(nèi)容包括:1.漏波波導(dǎo)輻射特性研究根據(jù)漏波波導(dǎo)的等效電路,采用傳輸線理論和微擾法,得到了具有較高近似階數(shù)的傳播常數(shù)和衰減常數(shù)的表達(dá)式。在弱耦合輻射、強(qiáng)耦合輻射以及具有介質(zhì)板天線罩三種情況下,對比分析了數(shù)值模擬結(jié)果與理論值的差異,提出了修正理論計(jì)算不足的方法。2.天線設(shè)計(jì)和優(yōu)化利用數(shù)值模擬、理論分析等方法設(shè)計(jì)了單根L波段漏波波導(dǎo)天線,經(jīng)過優(yōu)化,仿真結(jié)果與理論設(shè)計(jì)一致。所設(shè)計(jì)的天線總長度約2.2 m;輻射效率95.7%,端口反射系數(shù)-33 dB;主瓣方向與波導(dǎo)軸向夾角42o,增益15.8 dBi;H面主瓣寬度8.6o,副瓣電平-21.2 dB;功率容量達(dá)到1.6 GW。3.組陣研究以所設(shè)計(jì)單根漏波波導(dǎo)天線為陣元,研究了漏波波導(dǎo)天線的組陣問題,著重討論了單元天線組陣過程中各個陣元間的互耦,優(yōu)化設(shè)計(jì)及波束掃描。通過仿真模擬與理論分析,給出了經(jīng)過優(yōu)化后的9元天線陣列。研究結(jié)果表明,天線陣列波束掃描在±50o范圍內(nèi)都能保持較高的增益水平,同時(shí)副瓣得到有效抑制,為實(shí)際應(yīng)用奠定了基礎(chǔ)。
[Abstract]:With the development of high power microwave high Power microwave (HPM) technology, the development of compact, portable and environmentally adaptable transmitting antennas has become an urgent demand for the application of HPM technology. In view of L band high power microwave radiation, it is necessary to meet the high power capacity. In order to realize the special demand of high efficiency radiation in small size, this paper focuses on a strong coupling design method of leaky waveguides, and designs the L-band leaky waveguides antenna which is relatively short in length. The designed leaky waveguide antenna has the characteristics of high power capacity and convenient array. The main contents include: 1. The radiation characteristics of the leaky waveguides are studied according to the equivalent circuit of the leaky waveguides, and the transmission line theory and perturbation method are used to study the radiation characteristics of the leaky waveguides. The expressions of propagation constant and attenuation constant with higher approximate order are obtained. In the case of weak coupling radiation, strong coupling radiation and dielectric plate radome, the difference between the numerical simulation results and the theoretical values is compared and analyzed. The method of correcting the deficiency of theoretical calculation is put forward. 2.The antenna design and optimization are designed by numerical simulation, theoretical analysis and other methods. The single L-band leaky wave waveguide antenna is designed and optimized. The simulation results are consistent with the theoretical design. The total length of the antenna designed is about 2.2 m.The radiation efficiency is 95.7m, the port reflection coefficient is -33 dB, the axial angle between the main lobe and the waveguide is 42o, the gain is 15.8 d, the width of the main lobe is 8.6o, the sidelobe level is -21.2 dB, and the power capacity is up to -21.2 dB. To 1.6 GW.3.The array is based on a single leaky waveguide antenna, The problem of array of leaky wave waveguide antenna is studied, and the mutual coupling, optimization design and beam scanning of each element in the array process of element antenna array are discussed. The simulation and theoretical analysis are carried out. The optimized 9 element antenna array is presented. The results show that the beam scanning of the antenna array can maintain a high gain level in the range of 鹵50 o, and the sidelobe is effectively suppressed, which lays a foundation for practical application.
【學(xué)位授予單位】：國防科學(xué)技術(shù)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN822.4

【參考文獻(xiàn)】

相關(guān)期刊論文 前4條

1 李佳偉;黃文華;張治強(qiáng);黃惠軍;王康懿;梁鐵柱;陳昌華;方進(jìn)勇;;基于漏波波導(dǎo)X波段高功率微波天線的實(shí)驗(yàn)[J];強(qiáng)激光與粒子束;2011年12期

2 李佳偉;黃文華;梁鐵柱;黃惠軍;王康懿;;基于漏波波導(dǎo)的X波段高功率微波天線[J];強(qiáng)激光與粒子束;2011年08期

3 袁海軍,鐘輝煌;利用多扇區(qū)介質(zhì)透鏡得到TM_(01)模激勵的圓錐喇叭筆形波束輻射[J];強(qiáng)激光與粒子束;2005年01期

4 周海京,丁武,劉慶想;VLASOV天線的研究[J];強(qiáng)激光與粒子束;2002年03期

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本文編號：1602764