DC-60 GHz硅基垂直互聯結構仿真設計
2022年電子技術應用第1期
游月娟,劉德喜,劉亞威,史 磊
北京遙測技術研究所,北京100094
摘要: 設計了一種基于多層硅轉接板堆疊的垂直互聯結構,對DC-60 GHz頻段內不考慮和考慮硅表面SiO2層的兩種層間結構的垂直互聯仿真結果進行對比,證明了硅表面SiO2層存在會對諧振頻率及阻抗等射頻性能產生影響;對后者垂直互聯結構進行參數優化,射頻傳輸性能較好,頻率40 GHz以下時回波損耗S11小于-30 dB,60 GHz以下整體S11小于-15 dB,插入損耗S12在50 GHz以下大于-0.32 dB;研究了硅表面SiO2絕緣層厚度變化對射頻信號傳輸性能的影響,結果表明適當增加其厚度有助于垂直互聯結構性能優化。
中圖分類號: TN710
文獻標識碼: A
DOI:10.16157/j.issn.0258-7998.211907
中文引用格式: 游月娟,劉德喜,劉亞威,等. DC-60 GHz硅基垂直互聯結構仿真設計[J].電子技術應用,2022,48(1):142-145,151.
英文引用格式: You Yuejuan,Liu Dexi,Liu Yawei,et al. Design of DC-60 GHz silicon based vertical interconnection structure[J]. Application of Electronic Technique,2022,48(1):142-145,151.
文獻標識碼: A
DOI:10.16157/j.issn.0258-7998.211907
中文引用格式: 游月娟,劉德喜,劉亞威,等. DC-60 GHz硅基垂直互聯結構仿真設計[J].電子技術應用,2022,48(1):142-145,151.
英文引用格式: You Yuejuan,Liu Dexi,Liu Yawei,et al. Design of DC-60 GHz silicon based vertical interconnection structure[J]. Application of Electronic Technique,2022,48(1):142-145,151.
Design of DC-60 GHz silicon based vertical interconnection structure
You Yuejuan,Liu Dexi,Liu Yawei,Shi Lei
Beijing Institute of Telemetry Technology,Beijing 100094,China
Abstract: A vertical interconnection structure based on a stack of multi-layer silicon interposer boards is designed. The simulation results of the vertical interconnection structure of the two interlayer structure not considering and considering the SiO2 layer on the silicon surface were compared in the DC-60 GHz frequency band. The existence of the SiO2 layer has an impact on the radio frequency performance such as resonant frequency and impedance. The parameters of the latter vertical interconnection structure are optimized, its RF transmission performance is good, and the return loss S11 is less than -30 dB when the frequency is below 40 GHz, the overall S11 is less than -15 dB below 60 GHz, and the insertion loss S12 is greater than -0.32 dB below 50 GHz. This paper simulates and analyzes the influence of the thickness of SiO2 insulation layer on the silicon surface on the transmission performance of the radio frequency signal. The results show that appropriately increasing thickness of SiO2 insulation layer can help optimize the performance of the vertical interconnection structure.
Key words : 3D integration;stack of multi-layer silicon interposer;vertical interconnection structure;transmission performance
0 引言
隨著電子信息技術及先進封裝技術的不斷發展,系統級封裝技術因微型化和高集成化的優勢使其在電子行業得到了廣泛的發展和應用[1],現代軍用及民用電子裝備朝著高性能、小型化、低成本和低功耗等方向快速發展。三維集成封裝成為實現該目標的必要途徑。傳統封裝方式一般是采用引線鍵合或倒裝焊接等方式將元器件表面貼裝或內嵌入陶瓷或PCB板等基板材料,封裝后的器件在某些方面呈現出不錯的性能,但在熱學、電學、工藝復雜度和工藝成本等方面仍存在一定的不足之處[2]。例如,封裝結構中溫度差導致的層間應力的分布的熱失配問題,各層材料間的熱膨脹系數不匹配會造成整個系統中存有殘余應力和熱形變,嚴重影響封裝性能[3]。表1展示了常用基板和芯片材料的熱學參數[4-5],對比可知,單晶硅比其他材料具有更優的熱學性能,同時半導體材料單晶硅由于制造精度高、成本低、批量化、易于集成等優點已逐漸成為系統級封裝技術中最有前景的基板材料之一[1]。
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作者信息:
游月娟,劉德喜,劉亞威,史 磊
(北京遙測技術研究所,北京100094)
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