本文選題：北斗 + 高動態(tài)��； 參考：《中北大學(xué)》2017年碩士論文

【摘要】：北斗衛(wèi)星導(dǎo)航定位是我國自主開發(fā)的一項全球定位系統(tǒng)技術(shù),在國家信息產(chǎn)業(yè)領(lǐng)域占有重要地位。天線是導(dǎo)航系統(tǒng)用來接收北斗信號重要的部分,近年來微帶天線以其低剖面、易與載體共形等優(yōu)點而被廣泛使用。然而北斗天線設(shè)計的可共形性及其陣列單元設(shè)計的小型化問題仍是人們關(guān)注的重點,為此本文主要開展基于北斗的高動態(tài)圓柱共形微帶天線以及共形陣列天線的設(shè)計。首先開展了微帶天線基本理論的研究工作,根據(jù)微帶天線的輻射原理、饋電方式以及阻抗匹配相關(guān)的原理,分析了一般共形微帶天線的研究方法,提出了用腔模理論分析圓柱共形微帶天線陣的方案。其次根據(jù)平面微帶天線小型化的設(shè)計方案,進(jìn)行了對微帶饋線支節(jié)彎折解決天線阻抗匹配的設(shè)計,優(yōu)化了平面微帶天線的性能。仿真和加工實物測試表明,設(shè)計的平面微帶天線在北斗B1頻段電壓駐波比小于2,圓極化性能良好,軸比小于3dB,在阻抗匹配良好的情況下,實現(xiàn)了天線的小型化設(shè)計,為共形微帶天線的研究和應(yīng)用提供理論及仿真依據(jù)。基于將單支節(jié)調(diào)配器用于曲面的思想,進(jìn)行了北斗圓柱共形微帶天線的設(shè)計,進(jìn)行了二單元北斗圓柱共形陣列天線的HFSS仿真,研制了北斗天線實物,測試結(jié)果表明,該天線具有良好的阻抗帶寬,VSWR2,增益為7.25dB,圓極化性能良好,基本滿足高動態(tài)條件下北斗天線工程使用要求。
[Abstract]:Beidou satellite navigation and positioning is a global positioning system technology developed by our country. It occupies an important position in the field of national information industry. The antenna is an important part of the navigation system used to receive Beidou signal. In recent years, microstrip antenna is widely used for its low profile and easy to conform with the carrier. However, the design of the Beidou antenna can be used. The problem of conformal and array element design miniaturization is still the focus of attention. This paper mainly carries out the design of high dynamic cylindrical conformal microstrip antenna and conformal array antenna based on the Beidou. Firstly, the research work of the basic theory of microstrip antenna is carried out, according to the radiation principle of the microstrip antenna, the feeding mode and the impedance. According to the principle of matching, the research method of common conformal microstrip antenna is analyzed. A scheme of analyzing cylindrical conformal microstrip antenna array with cavity mode theory is proposed. Secondly, according to the design scheme of the miniaturization of the planar microstrip antenna, the design of the impedance matching of the microstrip feeder is carried out and the performance of the planar microstrip antenna is optimized. The simulation and processing results show that the designed planar microstrip antenna is less than 2 in the B1 band of Beidou, with good circular polarization performance and less than 3dB in axis ratio. Under the condition of good impedance matching, the miniaturization design of the antenna is realized, which provides theoretical and simulation basis for the research and Application of conformal microstrip antenna. A Beidou cylindrical conformal microstrip antenna is designed for the idea of curved surface. The HFSS simulation of a conformal array antenna with two units of the Beidou cylinder is carried out. The dipper antenna is developed. The test results show that the antenna has good impedance bandwidth, VSWR2, gain 7.25dB, good circular polarization performance and basically meet the high dynamic conditions north. The use of bucket antenna engineering.
【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】：TN965.2

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