【摘要】：作為發(fā)射和接收信號的重要電子部件,天線和無線電子系統(tǒng)的發(fā)展趨勢一樣,都朝著小型化、集成化和高性能的方向迅猛發(fā)展。本文在三角形基片集成波導(dǎo)(SIW)諧振腔的基礎(chǔ)上,首先設(shè)計并實現(xiàn)了工作在不同工作模式下的小型化SIW和半模基片集成波導(dǎo)(HMSIW)背腔縫隙線極化天線。接著基于背腔縫隙線極化天線提出了三角形SIW交叉十字縫背腔圓極化天線,通過調(diào)節(jié)腔體上兩條輻射縫隙的長度差異,來引起天線諧振腔中兩種簡并模式的分裂,從而使得兩縫隙輻射出的線極化電磁波,在某一頻段內(nèi)實現(xiàn)等幅度且相位差為90度,進而在遠場疊加形成圓極化波。采用SIW技術(shù)實現(xiàn)的背腔縫隙天線不僅保留了傳統(tǒng)金屬背腔縫隙天線輻射性能高的優(yōu)點,并且大大減小了天線體積,結(jié)構(gòu)簡單,剖面低,易于和平面電路集成,除此之外,由于使用的是三角形諧振腔體,和工作在相同模式且面積相同的矩形或圓形SIW諧振腔縫隙天線相比,三角形背腔縫隙天線能獲得更高的輻射效率,結(jié)構(gòu)更加緊湊,方便布局,易組陣。最后,為了說明三角形SIW背腔縫隙天線應(yīng)用于陣列天線的可行性,基于三角形背腔縫隙線極化天線,利用三端口微帶等功率分配器合理設(shè)計均勻饋電網(wǎng)絡(luò),組成1*4平面線極化陣列天線,該陣列結(jié)構(gòu)緊湊,方向性強,旁瓣低。
[Abstract]:As an important electronic component for transmitting and receiving signals, the development trend of antenna and wireless electronic system has been developing rapidly in the direction of miniaturization, integration and high performance. Based on the triangular matrix integrated waveguide (SIW) resonator, this paper first designs and implements a miniaturized SIW and half work under different working modes. Model base plate integrated waveguide (HMSIW) slot line polarization antenna. Then a circular polarized antenna with a triangular SIW cross slit back cavity is proposed based on the slot line polarization antenna of the back cavity. By adjusting the length difference of two radiated gaps on the cavity, the split of two degenerate modes in the antenna resonator is caused, thus the lines emitted by the two slot are radiated. The polarization electromagnetic wave, which realizes the equal amplitude and the phase difference of 90 degrees in a certain frequency band, then forms the circular polarization wave in the far field. The back cavity slot antenna adopted by the SIW technology not only keeps the advantages of the high radiation performance of the traditional metal back cavity slot antenna, but also greatly reduces the antenna size, the structure is simple, the profile is low, and the plane electricity is easy to be with the plane. In addition, the triangular resonator antenna can obtain higher radiation efficiency, compact structure, convenient layout and easy array. Finally, in order to explain the triangular SIW back cavity gap days, the triangular cavity slot antenna can obtain higher radiation efficiency compared with the rectangular or circular SIW resonant cavity antenna with the same mode and area. The line should be used for the feasibility of the array antenna. Based on the triangle back cavity slot line polarization antenna, the uniform feed network is designed by the three port microstrip power divider, and the 1*4 planar linear polarized array antenna is formed. The array has compact structure, strong direction and low sidelobe.
【學(xué)位授予單位】：南京郵電大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN823.24

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相關(guān)碩士學(xué)位論文 前1條

1 姜立偉;基片集成波導(dǎo)技術(shù)的研究及其在雙通帶領(lǐng)域的應(yīng)用[D];西安電子科技大學(xué);2010年

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本文編號：2146525