【摘要】：LTCC(Low Temperature Co-fired Ceramic)技術是于1982年由休斯公司開發(fā)的新型材料技術。該技術能將無源元件集成在基片內(nèi)部,并且在其表面可貼裝IC和有源芯片,制成無源和有源的集成功能模塊。均衡器主要用于和放大器一起構成固態(tài)驅動放大模塊去驅動行波管放大器,保證行波管的輸出曲線比較平坦。較高的均衡精度、足夠大的均衡量、較小的插入損耗和回波損耗是設計均衡器時需要著重考慮的指標。LTCC的多層布線能力有利于均衡器的小型化設計。延遲組件作為相控陣雷達的重要部件之一,其進一步的發(fā)展將有助于提高整個相控陣雷達的性能。用于將電信號延遲一段時間的器件叫做延遲線,當將延遲線與開關結合在一起能夠實現(xiàn)具體的延遲功能的器件就叫延遲組件。延遲組件要求具有較小的色散和插入損耗、較高的相位精度和比較平坦的幅頻特性。本文在針對均衡器的理論做了詳細分析之后,根據(jù)LTCC技術的工藝特點,設計出了一種新型的基于LTCC技術的三維的復合左右手傳輸線諧振枝節(jié),詳細的分析了該諧振枝節(jié)對諧振頻率、均衡量和帶寬等指標的控制。采用該諧振枝節(jié)設計制作的均衡器的尺寸得到了很大的縮小,對均衡器的小型化研究具有重要意義,并且由于可調(diào)參數(shù)較多,使得均衡器的可調(diào)性大大增強。最后設計制作了兩個頻帶的均衡器,分別工作在2~6GHz和6~18GHz,測試結果與仿真結果基本一致。接著對LTCC延遲組件的無源結構進行了研究,分析了切角對相位的影響,研究了平行雙線之間的耦合,最后對LTCC中的隔離孔做了分析研究,針對延遲組件設計了相應的直流控制電路。在上述工作的基礎上,仿真設計了基于LTCC技術的延遲段和直通段。最后結合開關芯片設計了一款工作在Ka波段的6位延遲組件,該延遲組件具體尺寸為68mm×48mm×15mm,測試結果為:插入損耗小于等于35.3dB,駐波小于等于1.93,帶內(nèi)波動小于等于2.6dB,相位線性度小于等于17?,滿足指標要求。
[Abstract]:LTCC (Low Temperature Co-fired Ceramic) is a new material technology developed by Hughes in 1982. The technology can integrate passive components into the substrate and mount IC and active chip on its surface to make passive and active integrated function modules. The equalizer is mainly used to drive the TWT amplifier with the solid-state driving amplifier to ensure that the TWT output curve is relatively flat. Higher equalization accuracy, large enough equalization quantity, small insertion loss and echo loss are important indexes to be considered in the design of equalizer. The multilayer cabling ability of LTCC is beneficial to the miniaturization design of equalizer. As one of the important components of phased array radar, the further development of delay module will help to improve the performance of the whole phased array radar. A device used to delay an electrical signal for a period of time is called a delay line. When a delay line is combined with a switch to achieve a specific delay function, it is called a delay component. Delay components require smaller dispersion and insertion loss, higher phase accuracy and flat amplitude-frequency characteristics. After the detailed analysis of the theory of equalizer and according to the technological characteristics of LTCC technology, a new three-dimension resonant branch of compound left-hand transmission line based on LTCC technology is designed in this paper. The control of resonance frequency, equalization and bandwidth is analyzed in detail. The size of the equalizer designed with the resonant branch is greatly reduced, which is of great significance to the study of the miniaturization of the equalizer, and the tunability of the equalizer is greatly enhanced because of the large number of adjustable parameters. Finally, two band equalizers are designed and fabricated, which work in 2~6GHz and 61GHz, respectively. The test results are in good agreement with the simulation results. Then, the passive structure of LTCC delay module is studied, the influence of tangent angle on phase is analyzed, and the coupling between parallel two lines is studied. Finally, the isolation hole in LTCC is analyzed and studied. The DC control circuit is designed for the delay module. Based on the above work, the delay section and through section based on LTCC technology are simulated and designed. Finally, a 6-bit delay module working in Ka band is designed based on switch chip. The specific size of the delay module is 68mm 脳 48mm 脳 15mm. The test results show that the insertion loss is less than or equal to 35.3dB, the standing wave is less than or equal to 1.93, the in-band fluctuation is less than or equal to 2.6dB, and the phase linearity is less than or equal to 17db.
【學位授予單位】：電子科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TN715

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