本文關鍵詞：圓極化SIW縫隙天線的研究　出處：《南京理工大學》2017年碩士論文　論文類型：學位論文

  更多相關文章： 高增益 圓極化 SIW 縫隙天線 Ka波段 分裂貼片 腔體 十字縫隙 共口徑

【摘要】：衛(wèi)星通信系統(tǒng)要求天線具有高增益、對極化位置不敏感、能夠消除電離層對電磁波的法拉第旋轉效應、抗干擾性能力強等特點,因此圓極化、高增益成為衛(wèi)星通信天線技術發(fā)展的重要方向�；刹▽�(SIW)縫隙天線具有高增益、高效、適用于高頻的優(yōu)點,并且剖面低、加工成本低,因此本文基于SIW縫隙陣列天線研究圓極化陣列的設計,提出了兩種圓極化SIW縫隙天線陣列。研究內容主要包括:第一,綜述了圓極化SIW縫隙天線的研究現(xiàn)狀,分析了采用不同SIW的寬度和厚度對天線性能的影響,討論了 SIW與微帶、波導等接口的轉換,研究了由于填充介質帶來的SIW縫隙天線布局問題。第二,設計了一種Ka波段的SIW饋電圓極化貼片陣列天線。在SIW上表面金屬層開縱縫的基礎上,加載一對分裂的圓極化切角貼片,構成圓極化輻射單元。利用傳統(tǒng)的寬邊縫隙陣列設計方法,設計了 1×8線陣,得到線陣的阻抗帶寬為3.1%,軸比帶寬為2.3%,增益為16dB,副瓣電平值為-14dB,交叉極化隔離度為24dB。第三,提出一種SIW縫隙加載背腔十字縫的雙頻雙圓極化共口徑天線陣列天線。SIW開耦合縱縫實現(xiàn)陣列饋電,其上加載的背腔十字縫天線實現(xiàn)圓極化輻射。該輻射單元具有較好的隔離特性,適用于兩個頻率接近的圓極化陣列的共口徑設計。針對8.2GHz和8.6GHz兩不同工作頻率,分別設計串聯(lián)波導功分器饋電的4×8 SIW平面陣,利用交叉指型結構將兩陣列組合在一起實現(xiàn)雙頻雙圓極化共口徑陣列天線。對研制的陣列測試得到兩頻率下阻抗帶寬分別為1.3%和2.8%,阻抗隔離度分別為40dB和37dB,軸比帶寬分別為2%和2.3%,測得中心頻率處的增益均為19.3dB。本文設計的兩種天線將傳統(tǒng)波導縫隙天線改進成SIW縫隙天線陣列,在寬邊縱縫上加載圓極化輻射單元,使得新的天線結構不僅具有波導縫隙天線增益高、效率高的優(yōu)點,且容易實現(xiàn)圓極化設計,便于擴展得到高增益大陣列。天線整體結構緊湊、剖面低、可以利用PCB工藝制作,具有很好的應用前景。
[Abstract]:The antenna has a high gain of satellite communication system, is not sensitive to the polarization position, can eliminate the ionospheric Faraday rotation effect on electromagnetic waves, strong antijamming feature, so the circular polarization, high gain antenna technology has become an important direction of development of communication satellites. The substrate integrated waveguide (SIW) antenna with high gain, high efficiency the advantages, and is suitable for high frequency, low profile, low processing cost, so the design of SIW antenna array antenna array based on two kinds of SIW circularly polarized slot antenna array is proposed. The main research contents include: first, the status quo of SIW circularly polarized slot antenna are summarized, analyzed by different SIW the width and thickness of the antenna performance, discusses the SIW and microstrip waveguide, conversion interface, because of the SIW slot antenna layout filling medium problems. Second, design a Ka band SIW fed circularly polarized patch antenna array. Based on SIW on the surface of the metal layer on longitudinal seam, circular polarization loading a pair of split patches with corner cut, a circularly polarized radiation unit. Using the broadside slot array the traditional design method, design of the 1 * 8 line, get the linear impedance bandwidth the 3.1%, axial ratio bandwidth is 2.3%, the gain is 16dB, the sidelobe level is -14dB, cross polarization isolation is 24dB. third, a SIW slot loaded cavity cross stitch of the dual band dual polarization antenna array antenna.SIW common aperture coupling longitudinal slot array feed, loaded on the back cavity cross slot antenna to realize circularly polarized radiation. The radiation unit has good isolation characteristics, design for common aperture circular polarization array at two frequency close to the 8.2GHz and 8.6GHz. According to the two different working frequencies, respectively design of series waveguide power divider fed 4 * 8 SI W planar array, using interdigitated structure two arrays together to achieve dual band dual polarization antenna array. The common aperture array test developed by two frequency impedance bandwidth are 1.3% and 2.8%, impedance isolation is 40dB and 37dB respectively, the bandwidth of the axial ratio were 2% and 2.3%, the measured center frequency the gain was two 19.3dB. antenna designed in this paper will be the traditional waveguide slot antenna improved SIW slot antenna array, circular polarization slot loaded on the radiating element in the broadside longitudinal, makes the antenna structure not only has a new waveguide slot antenna with high gain, high efficiency, and easy to achieve circular polarization design, easy to expand high high gain antenna array. The whole structure is compact, low profile, can make use of PCB technology, has good application prospects.

【學位授予單位】：南京理工大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TN823.24

【參考文獻】

相關期刊論文 前4條

1 李南京;馮引良;王建飛;黨嬌嬌;;利用線極化天線快速測量圓極化天線軸比的方法[J];紅外與激光工程;2013年08期

2 尚軍平;傅德民;蔣帥;鄧穎波;;圓極化天線特性參數測量方法[J];西安電子科技大學學報;2009年01期

3 張曉平;周懷安;;一種圓極化天線極化特性的幅度精測方法[J];航天器環(huán)境工程;2009年01期

4 李皓,華光,陳繼新,洪偉,崔鐵軍,吳柯;基片集成波導和微帶轉換器的理論與實驗研究[J];電子學報;2003年S1期

相關博士學位論文 前1條

1 李皓;基片集成波導不連續(xù)性問題的研究[D];東南大學;2005年

相關碩士學位論文 前3條

1 胡磊;寬帶圓極化波導縫隙天線的研究[D];南京理工大學;2016年

2 徐建凱;高增益高效率圓極化波導縫隙天線的研究[D];南京理工大學;2015年

3 劉巍;圓極化波導縫隙天線研究[D];南京理工大學;2014年

，

本文編號：1411542