本文選題：多頻帶天線 + 寬頻帶天線��； 參考：《電子科技大學(xué)》2017年碩士論文

【摘要】：近年來,隨著無線通信技術(shù)的快速發(fā)展,人們對具有高性能的無線通信設(shè)備更加迫切地需求。一部無線通訊設(shè)備所整合的天線部件的性能是決定該設(shè)備綜合性能好壞的關(guān)鍵因素之一。與此同時,無線通信設(shè)備的飛速發(fā)展也對大規(guī)模數(shù)據(jù)的傳輸速率提出了嚴苛的要求。具有圓極化輻射特性的寬頻帶與多頻帶天線正是可以滿足高速率、大容量傳輸要求的新型天線。本論文在匹配了幾種常用無線通信系統(tǒng)需求的基礎(chǔ)上,結(jié)合圓極化天線具有信息傳輸?shù)撵`活性與抗極化失配的特點,對多頻帶圓極化天線和寬頻帶圓極化天線進行了深入地設(shè)計研究。本論文的主要工作內(nèi)容及研究成果具體如下:首先,通過查閱國內(nèi)外大量關(guān)于多頻帶與寬頻帶圓極化天線科研報告與文獻綜述,系統(tǒng)地介紹了本課題的研究背景,詳細地總結(jié)了該領(lǐng)域的發(fā)展現(xiàn)狀。比較全面地概括了本文所涉及到的微帶天線,單極天線與圓極化天線的基本理論,為下文天線設(shè)計部分提供理論基礎(chǔ)。然后,對多頻帶圓極化天線展開設(shè)計研究,設(shè)計了兩個多頻段圓極化天線,包括:(1)應(yīng)用于北斗導(dǎo)航頻段的雙頻微帶天線,通過對方形輻射貼片四角分別開四個尺寸互異的圓弧形槽實現(xiàn)圓極化輻射,并利用疊層結(jié)構(gòu)達到雙頻輻射特性。(2)應(yīng)用于WLAN/WiMAX頻段的三頻單極天線,通過在輻射體上蝕刻出十字形槽與倒“L”形槽實現(xiàn)圓極化輻射,并通過改進接地板形狀優(yōu)化其圓極化軸比特性。最后,對寬頻帶圓極化天線展開設(shè)計研究,設(shè)計了三個寬頻段圓極化天線,包括:(1)一種應(yīng)用在導(dǎo)航頻段的圓極化單極天線,該設(shè)計通過簡單地改進接地板實現(xiàn)寬頻帶圓極化輻射特性;(2)一種應(yīng)用在導(dǎo)航頻段的寬頻圓極化單極天線,并通過對接地板引入三角形開槽和對輻射體進行彎折設(shè)計達到小型化效果;(3)一種應(yīng)用在WLAN/WiMAX頻段的單極天線,利用改進的“C”形結(jié)構(gòu)輻射體實現(xiàn)寬頻帶圓極化輻射特性。
[Abstract]:In recent years, with the rapid development of wireless communication technology, people have a more urgent need for wireless communication devices with high performance. The performance of an integrated antenna component of a wireless communication device is one of the key factors determining the comprehensive performance of the device. At the same time, the rapid development of wireless communication equipment has put forward strict requirements for the transmission rate of large-scale data. The broadband and multi-band antennas with circularly polarized radiation are new antennas which can meet the requirements of high speed and large capacity transmission. On the basis of matching the requirements of several commonly used wireless communication systems, this paper combines the characteristics of circular polarization antenna with the flexibility of information transmission and anti-polarization mismatch. The multiband circular polarization antenna and the wide band circular polarization antenna are deeply designed and studied. The main contents and research results of this thesis are as follows: firstly, by consulting a large number of domestic and foreign reports and literature review on multi-band and wide-band circular polarization antenna, the research background of this topic is introduced systematically. The present situation of this field is summarized in detail. The basic theories of microstrip antenna, monopole antenna and circular polarization antenna are summarized in this paper. Then, the design of multi-band circular polarization antenna is studied, and two multi-band circular polarization antennas are designed, including the dual-frequency microstrip antenna used in Beidou navigation frequency band. The circular polarized radiation is realized by opening four different sizes of circular arcs on the four corners of the square radiation patch, and using the laminated structure to achieve the dual-frequency radiation characteristics. (2) the three-frequency monopole antenna in WLAN / WiMAX band is used. The circular polarization radiation is realized by etching cross groove and inverted "L" groove on the radiator, and the circularly polarized axial ratio is optimized by improving the shape of the floor. Finally, the design of a wide band circularly polarized antenna is carried out, and three circularly polarized antennas are designed, including 1: 1) a circularly polarized monopole antenna which is used in navigation frequency band. In this design, a broadband circularly polarized monopole antenna used in navigation frequency band is realized by simply improving the floor connection. By introducing triangular grooves to the floor and bending the radiator to achieve a miniaturization effect, a monopole antenna applied in the WLAN / WiMAX band is proposed. The modified "C" structure radiator is used to realize the wide-band circularly polarized radiation characteristics.
【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】：2017
【分類號】：TN822

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