4.5 Article

An Ultracompact Butterworth Low-Pass Filter Based on Coaxial Through-Silicon Vias

Journal

Publisher

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TVLSI.2016.2620460

Keywords

Coaxial through-silicon via (TSV); low-pass filter (LPF); S-parameters; spiral inductor

Funding

  1. National Natural Science Foundation of China [61404105]
  2. Young Talent Fund of University Association for Science and Technology in Shaanxi, China [20150112]
  3. Key Discipline Project in Shaanxi Province of China [107000090803]

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Based on through-silicon-via technology, we propose an ultracompact Butterworth low-pass filter (LPF) with area of 0.01 mm(2). An equivalent circuit model of the proposed LPF is exploited, analyzed, and simplified. The comparisons of filtering characteristics among ideal 4-GHz fifth-order Butterworth LPF, equivalent circuit model, and full wave simulation of proposed LPF validate the accuracy of the equivalent circuit model. And the proposed LPF exhibits ultracompact size and superior filtering characteristics compared with the existing LPF.

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