A Simple and Accurate Method for Extracting Super Wideband Electrical Properties of the Printed Circuit Board

Yi-Wen Wu, Zhang-Cheng Hao, Ming-Cui Tao, Xiang Wang, Jia-Sheng Hong

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Abstract

In order to accurately design microwave, millimeter-wave components and circuits, a simple and accurate method for extracting extremely wideband characteristics of the printed-circuit-board (PCB), including relative dielectric constant, dielectric loss tangent and equivalent copper conductivity, is proposed and validated in this paper. By properly designing the circular substrate integrated waveguide (CSIW) cavity to let its resonating modes distribute within a wide frequency band, extremely broadband properties of the PCB can theoretically be extracted with only one pair of CSIW cavities. The proposed method overcomes the limitations of conventional methods that only support narrowband applications, require a large number of cavities and have relatively large errors. Experiments show that the proposed method is able to extract, accurately and efficiently, the 8-110 GHz characteristics of a TLY-5Z substrate based PCB. And, the extracted results are verified by designing and measuring a fourth-order Chebyshev filter at X band.
Original languageEnglish
Pages (from-to)57321-57331
Number of pages11
JournalIEEE Access
Volume7
Early online date16 Apr 2019
DOIs
Publication statusPublished - 2019

Keywords

  • Dielectric constant
  • circular substrate integrated waveguide (CSIW) cavity
  • dielectric loss tangent
  • equivalent conductivity
  • wideband characteristics

ASJC Scopus subject areas

  • Computer Science(all)
  • Materials Science(all)
  • Engineering(all)

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