高集成小型化中频滤波组件设计与实现

doi:10.16180/j.cnki.issn1007-7820.2022.02.001

Abstract

Abstract:

To meet the demand of large number and high integration of filters in the IF filter modules of radar receivers, a miniaturization LC filter based on the 3D integration technology is proposed in this study. The application and integrating process of 3D LC filter in modules are studied and analyzed. The 3D LC filter adopts two substrates, and uses 3D integration process and BGA technology to realize the three-dimensional integrated assembly of the two substrates. High-density layout can be realized by placing capacitive elements on the bottom substrate. Inductive elements are placed on the top substrate and separated from the capacitive elements, and signal communication is achieved through solder balls. The use of a three-dimensional integration scheme can reduce the size of the LC filter circuit by nearly 50%, and the filter index is consistent with the performance of the planar filter circuit. Compared with the traditional IF filter component design method, this solution is more conducive to achieve high integration and miniaturization.

Key words: IF filter module, switch filter bank, LC filter, 3D integration, BGA, multi-function, miniaturization, high integration

CLC Number:

TN713

BAI Rui,XU Da,YANG Liang,SUN Congke,WANG Shaodong. Design and Implementation of High Integration and Miniaturization IF Filter Module[J].Electronic Science and Technology, 2022, 35(2): 1-6.

Figures/Tables 10

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References 18

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滤波器类型	中心频率及带宽	带外抑制
宽带滤波器	750±200 MHz	≥60 dBc@DC~450 MHz ≥60 dBc@1 050~5 000 MHz
窄带滤波器	720±20 MHz	≥60 dBc@DC~450 MHz ≥40 dBc@450~640 MHz ≥40 dBc@800~1 050 MHz ≥60 dBc@1 050~5 000 MHz

参数	指标要求	测试数据
组件增益	≥35 dB	36.8 dB@宽带 37.1 dB@窄带
输出功率P-1	≥10 dBm	12 dBm
增益控制范围	40 dB	40 dB
带内波动	—	2.1 dB@宽带 0.8 dB@窄带
带外抑制@宽带 750±200 MHz	≥60 dBc@DC~450 MHz ≥60 dBc@1 050~5 000 MHz	78.8 dBc 81.7 dBc
带外抑制@窄带 720±20 MHz	≥60 dBc@DC~450 MHz ≥40 dBc@450~640 MHz ≥40 dBc@800~1 050 MHz ≥60 dBc@1 050~5 000 MHz	97.1 dBc 59.1 dBc 46.1 dBc 87.1 dBc

Design and Implementation of High Integration and Miniaturization IF Filter Module

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