基于微混频器和吉尔伯特混频器的上变频mmic的封装和PCB效应的严格比较

F. Han, J. Wu, T. Horng
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引用次数: 0

摘要

通过Volterra系列分析,研究了封装和印刷电路板(PCB)对两种W-CDMA上变频MMIC设计线性度的影响。第一种设计采用了最近流行的ab类输入级微型混频器。第二种设计是基于一种常用的带有发射极退化的吉尔伯特混频器。在芯片级仿真中,两种上变频mmic都设计成具有相同的相邻通道功率比(ACPR)。经过制造、封装和PCB测试,与Gilbert混频器设计相比,基于微混频器的设计消耗更少的直流电,但由于封装和PCB的影响,导致ACPR性能下降更多。分析表明,基于微混频器的上变换器MMIC容易受到接地互连的寄生效应的影响,因此需要一种更好的封装方案,具有更低的接地电感才能实际使用
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Rigorous Comparison of Package and PCB Effects on Micromixer- and Gilbert Mixer-Based Upconverter MMICs
A Volterra series analysis is presented to study the package and printed circuit board (PCB) effects on the linearity of two W-CDMA upconverter MMIC designs. The first design adopts a recently popular micromixer with class-AB input stage. The second design is based on a commonly used Gilbert mixer with emitter degeneration. Both upconverter MMICs are designed to have the same adjacent channel power ratio (ACPR) in the chip-level simulation. After fabrication, packaging and testing on PCB, the micromixer-based design consumes less direct current but causes more degradation in the ACPR performance due to the influence of package and PCB when compared to the Gilbert mixer-based design. The analysis indicates that the micromixer-based upconverter MMIC is rather susceptible to the parasitic effects from the ground interconnect, and therefore it needs a better package solution with a lower ground inductance for practical use
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