本文選題：共形天線　切入點(diǎn)：微帶天線　出處：《電子科技大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：共形天線因?yàn)槭歉街谳d體的表面,可以節(jié)省空間,并且不影響載體的表面結(jié)構(gòu)。當(dāng)天線載體的運(yùn)動速度很高時,天線并不會對載體的空氣動力形成阻力。鑒于這些優(yōu)點(diǎn),共形天線可以廣泛的應(yīng)用在飛機(jī)、火箭、導(dǎo)彈、衛(wèi)星等各種飛行器上。因此共形天線逐漸成為了當(dāng)前天線領(lǐng)域研究的熱點(diǎn)。本文在現(xiàn)有研究成果的基礎(chǔ)上做了大量工作,提出了一種圓柱共形八木天線和一種圓柱共形對數(shù)周期天線,對今后圓柱共形天線的研究提供了參考。本論文的包含以下主要內(nèi)容:第一,對共形天線的研究意義和共形天線的研究現(xiàn)狀進(jìn)行了介紹,闡述了微帶共形天線的基礎(chǔ)理論和研究設(shè)計(jì)方法。第二,仿真優(yōu)化了一款微帶八木天線。通過在八木天線的反射器上開槽,可以使天線的結(jié)構(gòu)更加緊湊,縮小了天線的體積,而且能夠減小天線方向圖的旁瓣和增加天線回波損耗的帶寬;將八木天線做成圓柱共形天線,對其進(jìn)行了仿真優(yōu)化,可以看出圓柱共形天線仍然有較好的輻射特性,該天線的工作頻率在30GHz以上,能夠應(yīng)用于毫米波的設(shè)備;最后將天線進(jìn)行加工和測試,從測試結(jié)果可以證明圓柱共形八木天線擁有良好的綜合性能。第三,仿真優(yōu)化了一款微帶對數(shù)周期天線。通過使用單層介質(zhì)板來替代普通對數(shù)周期天線的雙層介質(zhì)板,可以減小天線的厚度,便于天線的共形;通過仿真優(yōu)化,單層介質(zhì)板所需要的輻射貼片數(shù)量減少很多以后,仍然具有很好的輻射特性,從而能夠使天線的尺寸大大的減小;將對數(shù)周期天線做成圓柱共形天線,對圓柱共形對數(shù)周期天線進(jìn)行了仿真優(yōu)化,可以看到天線仍然具有較好的特性,天線的工作頻率在2GHz到7GHz之間,有較寬的帶寬,能夠應(yīng)用在許多寬帶的設(shè)備;最后將天線進(jìn)行加工和測試,從測試結(jié)果可以證明共形對數(shù)周期天線擁有良好的性能。最后,對全文進(jìn)行了總結(jié),并給出了今后研究的方向。
[Abstract]:Conformal antennas, because they are attached to the surface of the carrier, save space and do not affect the surface structure of the carrier. When the velocity of the antenna carrier is very high, the antenna does not create resistance to the aerodynamics of the carrier. Conformal antennas can be widely used in aircraft, rockets, missiles, satellites and other aircraft. Therefore, conformal antennas have gradually become the focus of research in the field of antenna. In this paper, a lot of work has been done on the basis of existing research results. A cylindrical conformal octagonal antenna and a cylindrical conformal logarithmic periodic antenna are proposed, which provide a reference for the future research of cylindrical conformal antenna. The main contents of this thesis are as follows: first, The research significance of conformal antenna and the research status of conformal antenna are introduced. The basic theory and design method of microstrip conformal antenna are expounded. A microstrip Yagi antenna is simulated and optimized. By slotting the reflector of the antenna, the structure of the antenna can be more compact and the size of the antenna can be reduced. Moreover, it can reduce the sidelobe of antenna pattern and increase the bandwidth of antenna echo loss, and make Yagi antenna into cylindrical conformal antenna, and optimize it by simulation, it can be seen that cylindrical conformal antenna still has better radiation characteristics. The antenna can be used in millimeter-wave equipment because its working frequency is above 30GHz. Finally, the antenna is processed and tested, and the test results show that the cylindrical conformal Yagi antenna has good comprehensive performance. A microstrip logarithmic periodic antenna is simulated and optimized. By replacing the ordinary logarithmic periodic antenna with a single-layer dielectric plate, the thickness of the antenna can be reduced and the conformal antenna can be easily formed. The number of radiation patches required for a single-layer dielectric plate is much reduced, but it still has good radiation characteristics, which can greatly reduce the size of the antenna; the logarithmic periodic antenna is made into a cylindrical conformal antenna. The simulation optimization of cylindrical conformal logarithmic periodic antenna shows that the antenna still has good characteristics, the frequency of antenna is between 2GHz and 7GHz, and the antenna has a wide bandwidth, which can be used in many broadband devices. Finally, the antenna is machined and tested, and the test results show that the conformal logarithmic periodic antenna has good performance. Finally, the paper summarizes the whole paper and gives the research direction in the future.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN822

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