發(fā)布時間：2018-11-14 15:07

【摘要】：隨著雷達在戰(zhàn)爭中的廣泛應用,雷達系統(tǒng)正朝著小型化和多功能的方向發(fā)展。作為相控陣雷達系統(tǒng)最重要的部件之一,延遲線組件進一步的發(fā)展有助于實現(xiàn)收發(fā)模塊中的瞬時技術。延遲線是用于將電信號延遲一段時間的元件或器件,它要求在通帶內(nèi)有平坦的幅頻特性,小的衰減和色散,有良好的阻抗匹配以及一定相移特性。近期,低溫共燒陶瓷(Low Temperature Co-fired Ceramic)技術因其低損耗、高可靠性、高集成度等優(yōu)異的性能高速發(fā)展。與傳統(tǒng)延遲線相比,利用LTCC技術研制的延遲線因其小型化、高集成度,更適用于現(xiàn)代雷達系統(tǒng)。本論文首先對LTCC延遲組件的無源結構進行了研究。通過理論推導和仿真軟件建模對LTCC傳輸結構中的微帶線、帶狀線、共面波導以及LTCC垂直互連結構中的層間通孔過渡結構進行了分析研究,得到在Ka波段最優(yōu)的模型尺寸。還對Ka波段金絲鍵合技術進行了研究,通過增加金絲鍵合數(shù)量、改善端口阻抗匹配,顯著提升了組件的傳輸性能。在上述工作的基礎上,設計了一款工作在Ka波段的基于LTCC技術6路開關延遲線組件。每路延遲線單元由延遲線支路和等損耗直通支路組成,六路延遲線單元按順序級聯(lián)以后,通過驅(qū)動電路控制MMIC單刀雙擲開關選擇通路,可以產(chǎn)生最小1?,步進為1?,最大可達63?的延遲量。延遲支路選用了Ferro A6-M材料,延遲信號通過曲折帶狀線結構,可以實現(xiàn)組件小型化的同時顯著減小色散特性。等損耗支路選用了陶瓷基片,為了在不影響駐波性能的前提下增大損耗量,等損耗支路還采用了一種增益均衡器的結構。最終實測延遲組件體積僅為84×47×153mm,并且有優(yōu)良的駐波系數(shù)以及較小的色散效應。顯著改善了傳統(tǒng)的延遲線諸如體積大、損耗大、可調(diào)范圍小的缺點。本文對微波傳輸式延遲組件的研究有重要的參考價值,同時對雷達系統(tǒng)的小型化打下了堅實的基礎。
[Abstract]:With the wide application of radar in war, radar system is developing towards miniaturization and multifunction. As one of the most important components of phased array radar system, the further development of delay line module is helpful to realize the instantaneous technology in the transceiver module. Delay line is a component or device used to delay electrical signals for a period of time. It requires flat amplitude-frequency characteristics, small attenuation and dispersion, good impedance matching and certain phase-shifting characteristics in the passband. Recently, low temperature co-fired ceramics (Low Temperature Co-fired Ceramic) technology has been developed rapidly because of its low loss, high reliability and high integration. Compared with the traditional delay line, the delay line developed by LTCC technology is more suitable for modern radar system because of its miniaturization and high integration. In this paper, the passive structure of LTCC delay components is studied. The microstrip line, strip line, coplanar waveguide and interlayer through hole transition structure in LTCC vertical interconnect structure are analyzed by theoretical derivation and simulation software modeling. The optimal model size in Ka band is obtained. The Ka band gold wire bonding technology is also studied. By increasing the number of gold wire bonding and improving the port impedance matching, the transmission performance of the module is improved significantly. Based on the above work, a 6-way switch delay line module based on LTCC technology is designed for Ka band. Each delay line unit is composed of a delay line branch and an equal-loss straight through branch. After the six delay line units are cascaded in sequence, the MMIC single-pole double-throw switch is controlled by the drive circuit to select the path. Up to 63? The amount of delay. The Ferro A6-M material is used in the delay branch. The delay signal can be miniaturized and the dispersion characteristics can be significantly reduced by the zigzag strip structure. The ceramic substrate is used in the equal loss branch. In order to increase the loss without affecting the standing wave performance, the equal loss branch also adopts a gain equalizer structure. The measured volume of the delay module is only 84 脳 47 脳 153mm, and it has excellent standing wave coefficient and small dispersion effect. The disadvantages of traditional delay lines such as large volume, large loss and small adjustable range are greatly improved. This paper has important reference value for the research of microwave transmission delay module and lays a solid foundation for the miniaturization of radar system.
【學位授予單位】：電子科技大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TN958.92

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相關期刊論文 前1條

1 程翔;;11位數(shù)控延遲線組件的設計[J];微型機與應用;2013年06期

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本文編號：2331522