基于多層柔性介質(zhì)的Ka波段縫隙天線設(shè)計
發(fā)布時間：2018-11-15 14:17
【摘要】：隨著微波技術(shù)的不斷發(fā)展,天線及其饋電網(wǎng)絡(luò)作為雷達(dá)以及通信系統(tǒng)的關(guān)鍵部分之一,一直受到研究人員的重點關(guān)注。在陣列天線饋電網(wǎng)絡(luò)的設(shè)計中,功率分配器(下面簡稱功分器)的功率與相位平衡度決定所對應(yīng)天線能量的多寡,進(jìn)而影響天線增益,是天線饋電網(wǎng)絡(luò)中一個不可忽視的重要環(huán)節(jié)。本文在學(xué)習(xí)基片集成波導(dǎo)技術(shù)的基礎(chǔ)之上,以縫隙天線為主要研究方向,研究并設(shè)計了縫隙天線陣列中的功率分配網(wǎng)絡(luò),并在其后陣列天線低副瓣設(shè)計過程中加入了微帶天線陣列的對比研究,具體工作包含以下幾個方面:(1)對基片集成波導(dǎo)(Substrate Integrated Waveguide,簡稱SIW)平面陣列天線以及平面貼片陣列天線進(jìn)行了研究與設(shè)計。首先設(shè)計了一個以Rogers5880為板材,基于SIW的雙層十六路三角分布功分器。仿真結(jié)果顯示,功分器在33.5GHz至35.7GHz通帶內(nèi)S11小于-15d B,帶內(nèi)各端口損耗小于0.4d B,其余各端口的S參數(shù)曲線吻合良好,相鄰端口相位相差180°,輸出功率符合三角分布;然后在十六路功分器的基礎(chǔ)上,設(shè)計了一個8×8平面縫隙陣列天線,仿真結(jié)果顯示,天線在35GHz有良好的回波損耗,增益可達(dá)20d B,其副瓣電平在E面可達(dá)-28d B。(2)為了加深對低副瓣天線的設(shè)計理解,針對12單元的多邊形陣列天線,設(shè)計了一個以Rogers3850為板材的12路微帶功分器。該功分器在34GHz至36GHz通帶內(nèi)S11小于-20d B,仿真結(jié)果顯示,天線在34.3GHz至35.75GHz通帶內(nèi),回波損耗小于-10d B,增益可達(dá)20d B,副瓣電平在E面和H面可達(dá)-26d B。(3)基于以上兩種平面陣列天線進(jìn)行了柱面共形的研究和設(shè)計。文章將兩種天線在半徑150mm的圓柱體上進(jìn)行共形,并進(jìn)行了仿真。由仿真結(jié)果可以看出,天線在共形之后,二者S11均受到影響,產(chǎn)生一定的頻率偏移。相比較而言,微帶天線所受的影響比較小。在方向圖方面,縫隙天線的副瓣電平有明顯的增大趨勢,而微帶天線則表現(xiàn)為波瓣寬度增加,而且隨著柱面曲率半徑的增大,天線輻射特性呈向全向天線過渡的趨勢。
[Abstract]:With the development of microwave technology, antenna and its feed network, as one of the key parts of radar and communication system, have been paid more and more attention by researchers. In the design of the antenna array feed network, the power and phase balance of the power divider (hereinafter referred to as the power divider) determines the energy of the corresponding antenna, and then affects the antenna gain. It is an important link in antenna feed network. Based on the study of substrate integrated waveguide technology and the research direction of slot antenna, the power distribution network in slot antenna array is studied and designed in this paper. A comparative study of the microstrip antenna array is introduced in the design of the low sidelobe of the rear array antenna. The specific work includes the following aspects: (1) the substrate integrated waveguide (Substrate Integrated Waveguide, SIW) Planar Array Antenna and Planar Patch Array Antenna are studied and designed. Firstly, a 16-way double-layer triangular power divider based on Rogers5880 and SIW is designed. The simulation results show that the S11 is less than -15 dB in the 33.5GHz to 35.7GHz passband, and the loss of each port in the band is less than 0.4 dB. The S-parameter curves of the other ports are in good agreement with each other, and the phase difference between the adjacent ports is 180 擄. The output power conforms to the triangular distribution; Then an 8 脳 8 planar slot array antenna is designed on the basis of 16 power dividers. The simulation results show that the antenna has good echo loss in 35GHz, and the gain can reach 20 dB. The sidelobe level can reach -28 dB on the E plane. (2) in order to better understand the design of low sidelobe antenna, a 12-channel microstrip power divider with Rogers3850 as the plate is designed for the polygonal array antenna with 12 elements. The power divider is less than -20dB in the 34GHz to 36GHz passband. The simulation results show that in the 34.3GHz to 35.75GHz passband, the echo loss is less than -10dB, and the gain can reach 20dB. The sidelobe level can reach -26dB on the E and H planes. (3) the cylindrical conformal design is carried out based on the above two planar array antennas. In this paper, two antennas are conformed on a cylinder with radius 150mm and simulated. From the simulation results, it can be seen that after the antenna is conformal, both S11 and S11 are affected, resulting in a certain frequency offset. By comparison, the microstrip antenna is less affected. In the aspect of pattern, the sidelobe level of slot antenna increases obviously, while the width of microstrip antenna increases, and with the increase of radius of curvature of cylinder, the radiation characteristic of slot antenna tends to the omnidirectional antenna.
【學(xué)位授予單位】：南京航空航天大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN823.24
本文編號：2333539
[Abstract]:With the development of microwave technology, antenna and its feed network, as one of the key parts of radar and communication system, have been paid more and more attention by researchers. In the design of the antenna array feed network, the power and phase balance of the power divider (hereinafter referred to as the power divider) determines the energy of the corresponding antenna, and then affects the antenna gain. It is an important link in antenna feed network. Based on the study of substrate integrated waveguide technology and the research direction of slot antenna, the power distribution network in slot antenna array is studied and designed in this paper. A comparative study of the microstrip antenna array is introduced in the design of the low sidelobe of the rear array antenna. The specific work includes the following aspects: (1) the substrate integrated waveguide (Substrate Integrated Waveguide, SIW) Planar Array Antenna and Planar Patch Array Antenna are studied and designed. Firstly, a 16-way double-layer triangular power divider based on Rogers5880 and SIW is designed. The simulation results show that the S11 is less than -15 dB in the 33.5GHz to 35.7GHz passband, and the loss of each port in the band is less than 0.4 dB. The S-parameter curves of the other ports are in good agreement with each other, and the phase difference between the adjacent ports is 180 擄. The output power conforms to the triangular distribution; Then an 8 脳 8 planar slot array antenna is designed on the basis of 16 power dividers. The simulation results show that the antenna has good echo loss in 35GHz, and the gain can reach 20 dB. The sidelobe level can reach -28 dB on the E plane. (2) in order to better understand the design of low sidelobe antenna, a 12-channel microstrip power divider with Rogers3850 as the plate is designed for the polygonal array antenna with 12 elements. The power divider is less than -20dB in the 34GHz to 36GHz passband. The simulation results show that in the 34.3GHz to 35.75GHz passband, the echo loss is less than -10dB, and the gain can reach 20dB. The sidelobe level can reach -26dB on the E and H planes. (3) the cylindrical conformal design is carried out based on the above two planar array antennas. In this paper, two antennas are conformed on a cylinder with radius 150mm and simulated. From the simulation results, it can be seen that after the antenna is conformal, both S11 and S11 are affected, resulting in a certain frequency offset. By comparison, the microstrip antenna is less affected. In the aspect of pattern, the sidelobe level of slot antenna increases obviously, while the width of microstrip antenna increases, and with the increase of radius of curvature of cylinder, the radiation characteristic of slot antenna tends to the omnidirectional antenna.
【學(xué)位授予單位】：南京航空航天大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN823.24
【共引文獻(xiàn)】
相關(guān)期刊論文 前2條
1 錢青;洪玲偉;;C波段寬帶雙線極化微帶天線的設(shè)計[J];硅谷;2012年04期
2 梁斌;楊娜;;一種新型高增益微帶天線[J];數(shù)字通信;2009年05期
相關(guān)碩士學(xué)位論文 前10條
1 齊會穎;微帶共形天線陣的方向圖綜合與實驗研究[D];國防科學(xué)技術(shù)大學(xué);2010年
2 錢青;寬帶雙極化微帶天線的研究與設(shè)計[D];杭州電子科技大學(xué);2012年
3 英正慶;集成天線的射頻功率放大器的研究[D];浙江大學(xué);2003年
4 劉寶宏;微帶天線的分析和寬頻帶設(shè)計[D];南京理工大學(xué);2002年
5 曾志純;移動計算機(jī)網(wǎng)絡(luò)中的雙向功放與天線技術(shù)研究[D];武漢理工大學(xué);2004年
6 李龍;小型寬帶微帶天線設(shè)計[D];南京理工大學(xué);2004年
7 王艷麗;寬帶微帶天線設(shè)計與仿真技術(shù)研究[D];哈爾濱工程大學(xué);2004年
8 姚平;高增益及低副瓣平面陣列微帶天線研制[D];南京理工大學(xué);2005年
9 韓玲;基于無線數(shù)據(jù)傳輸系統(tǒng)微帶貼片天線與功率放大器的設(shè)計研究[D];中北大學(xué);2006年
10 李南;基于時域有限差分法的集成天線設(shè)計[D];合肥工業(yè)大學(xué);2007年
，本文編號：2333539
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