發(fā)布時(shí)間：2018-06-12 02:11

  本文選題：基片集成波導(dǎo) + H面喇叭天線(xiàn)　； 參考：《北京交通大學(xué)》2017年碩士論文

【摘要】：隨著社會(huì)的飛速發(fā)展,人們對(duì)信息的需求也越來(lái)越高,對(duì)通信質(zhì)量的要求也越來(lái)越高,高增益天線(xiàn)因其在通信的眾多應(yīng)用領(lǐng)域的巨大應(yīng)用價(jià)值,成為天線(xiàn)領(lǐng)域研究熱門(mén)之一。目前高增益天線(xiàn)的類(lèi)型有拋物反射面天線(xiàn)、平面陣列天線(xiàn)、漏波天線(xiàn)等等,但每一種高增益天線(xiàn)都有其優(yōu)缺點(diǎn):傳統(tǒng)的拋物反射面天線(xiàn),它的優(yōu)點(diǎn)是饋源簡(jiǎn)單、增益高,缺點(diǎn)是體積大、較笨重、難以集成、價(jià)格昂貴;平面陣列天線(xiàn)具有易于集成和增益高等優(yōu)點(diǎn),缺點(diǎn)是饋電網(wǎng)絡(luò)復(fù)雜、占用面積大;漏波天線(xiàn)的增益也比較高,但天線(xiàn)電長(zhǎng)度比較大,且一般形成錐形波束,波束效率不高�；刹▽�(dǎo)技術(shù)的誕生為高增益天線(xiàn)的發(fā)展提供了新的機(jī)遇,它不僅具有傳統(tǒng)波導(dǎo)的良好傳輸性能,同時(shí)兼有平板電路結(jié)構(gòu)的易加工優(yōu)勢(shì)。本文利用基片集成波導(dǎo)技術(shù)設(shè)計(jì)了拋物反射面結(jié)構(gòu),并應(yīng)用于構(gòu)造高增益H面喇叭天線(xiàn)和平面周期性漏波天線(xiàn),對(duì)設(shè)計(jì)方案進(jìn)行了仿真分析,并進(jìn)行了實(shí)際加工和測(cè)試。相對(duì)于傳統(tǒng)拋物面天線(xiàn),本文的設(shè)計(jì)方案具有低剖面、易于與平面電路集成的優(yōu)點(diǎn);相對(duì)于傳統(tǒng)的平面天線(xiàn)陣列結(jié)構(gòu),本文的設(shè)計(jì)方案省去了復(fù)雜的饋電網(wǎng)絡(luò),具有易于饋電、小型化的優(yōu)點(diǎn)。本文的主要工作和創(chuàng)新點(diǎn)如下:1.提出了一種基于基片集成波導(dǎo)的拋物反射面結(jié)構(gòu),并將其用于H面喇叭天線(xiàn)的設(shè)計(jì)。首先,設(shè)計(jì)的基于基片集成波導(dǎo)的拋物反射面結(jié)構(gòu),其優(yōu)點(diǎn)是可以采用簡(jiǎn)單的饋電方式實(shí)現(xiàn)大輻射口徑和等相位分布,從而為高增益的實(shí)現(xiàn)提供了先決條件;其次,研究了同軸探針饋電與反射電感柱、引向電容柱相結(jié)合的饋電方式,并研究了饋電點(diǎn)與拋物反射面的位置關(guān)系對(duì)饋電效果的影響,優(yōu)化得到了最佳的饋電結(jié)構(gòu)參數(shù);再次,研究了拋物反射面結(jié)構(gòu)與自由空間實(shí)現(xiàn)阻抗匹配的方法,設(shè)計(jì)了金屬條帶加載金屬柱陣列的匹配條帶,可極大的提高拋物面輻射口徑與自由空間的匹配程度;最后,對(duì)所提出的基于拋物面結(jié)構(gòu)的H面喇叭天線(xiàn)的內(nèi)部場(chǎng)分布、阻抗特性與遠(yuǎn)場(chǎng)輻射特性進(jìn)行了仿真分析,加工制作了天線(xiàn)實(shí)物并進(jìn)行了測(cè)試,測(cè)試結(jié)果和仿真結(jié)果吻合得很好。2.提出了以?huà)佄锓瓷涿娼Y(jié)構(gòu)作為饋源,在表面波結(jié)構(gòu)上加載周期性金屬條帶陣列的一維波束掃描高增益平面漏波天線(xiàn)。對(duì)天線(xiàn)結(jié)構(gòu)參數(shù)對(duì)天線(xiàn)性能的影響進(jìn)行了詳細(xì)的分析。3.提出了一種適合于周期性漏波結(jié)構(gòu)的低輻射區(qū)產(chǎn)生方法。該方法采用模式展開(kāi)法和有效輻射段理論相結(jié)合的方法,首先采用模式展開(kāi)法對(duì)周期性漏波結(jié)構(gòu)的口面場(chǎng)分解為各次空間諧波的疊加,然后針對(duì)諧波中的輻射模式,采用有效輻射段的分析方法計(jì)算得到該輻射模式的有效輻射段,并通過(guò)結(jié)構(gòu)參數(shù)的改變來(lái)抑制某個(gè)特定方向?qū)?yīng)的有效輻射段的輻射強(qiáng)度,以此來(lái)產(chǎn)生低輻射區(qū)域。傳統(tǒng)的低輻射區(qū)域產(chǎn)生方法適用于陣列結(jié)構(gòu)或連續(xù)彎曲口徑天線(xiàn),而本文首次提出了適用于周期性漏波結(jié)構(gòu)的低輻射區(qū)域產(chǎn)生方法,展示出較好的效果。
[Abstract]:With the rapid development of society, the demand for information is becoming higher and higher, and the demand for communication quality is becoming more and more high. High gain antenna has become one of the hot research areas in the field of antenna because of its great application value in many applications. At present, high gain antennas have parabolic reflector antennas, planar array antennas and leaky waves. Antenna and so on, but each kind of high gain antenna has its advantages and disadvantages: the traditional parabolic reflector antenna has the advantages of simple feed and high gain. The disadvantages of the antenna are large, heavy, difficult to integrate and expensive. The planar array antenna has the advantages of easy integration and high gain, and the disadvantage is that the feed network is complex and occupies a large area; a leaky wave antenna The gain of the antenna is also high, but the antenna electric length is larger, and the conical beam is generally formed, and the beam efficiency is not high. The birth of the substrate integrated waveguide technology provides a new opportunity for the development of the high gain antenna. It not only has the good transmission performance of the traditional waveguide, but also the easy processing advantage of the Jian Youping plate circuit. This paper uses the substrate set. A parabolic reflector structure is designed and applied to the construction of a high gain H surface horn antenna and a planar periodic leaky wave antenna. The design scheme is simulated and analyzed. Compared with the traditional parabolic antenna, the design scheme has the advantages of low profile and easy to integrate with the plane circuit. For the traditional planar antenna array structure, the design scheme of this paper saves the complex feed network and has the advantages of easy feeding and miniaturization. The main work and innovation of this paper are as follows: 1. a parabolic reflector structure based on substrate integrated waveguide is proposed and used in the design of H horn antenna. First, the design is based on the design. The parabolic reflector structure of the substrate integrated waveguide has the advantage that a simple feeding mode can be used to realize large radiant aperture and equal phase distribution, thus providing a prerequisite for the realization of high gain. Secondly, the feed mode combined with a coaxial probe feed and a reflective inductor column and a capacitance column is studied, and the feeding point and the throwing are studied. The effect of the position of the reflection surface on the feed effect is optimized, and the optimum parameters of the feed structure are optimized. Thirdly, the matching method of the parabolic reflector structure and the free space is studied, and the matching strip of the metal bar array is designed, which can greatly improve the matching range of the radiant aperture of the paraboloid and the free space. Finally, the internal field distribution of the H surface horn antenna based on the parabolic structure, the impedance characteristic and the far field radiation characteristics are simulated and analyzed. The antenna is fabricated and tested. The test results are in good agreement with the simulation results..2. proposes a parabolic reflector structure as the feed, and the surface wave structure is on the surface wave structure. A one dimensional beam scanning high gain plane leaky wave antenna with a periodic metal strip array. The effect of antenna structure parameters on the performance of the antenna is analyzed in detail..3. proposes a low radiation zone generation method suitable for periodic leaky wave structure. The method combines the method of mode expansion and the theory of effective radiation section. First, the mode expansion method is used to decompose the surface field of the periodic leaky wave structure into the superposition of the subspace harmonics, and then the effective radiation section of the radiation mode is calculated by the effective radiation section analysis method, and the effective radiation corresponding to a certain direction is suppressed by the modification of the structural parameters. The radiation intensity of the segment is used to produce a low radiation area. The traditional method of producing low radiation region is suitable for array structure or continuous curved aperture antenna. In this paper, the method of producing low radiation region for periodic leaky wave structure is proposed for the first time.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TN820

【參考文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 張兵;基于介質(zhì)加載SIW的H面喇叭天線(xiàn)及其陣列研究[D];南京理工大學(xué);2009年

，

本文編號(hào)：2007785