Abstract

In this paper, the transmission characteristics of a microstrip line (MSL) with dielectric rods placed periodically inside the substrate are analyzed by the finite-difference time-domain (FDTD) method. As a result, an MSL with a backstop characteristic is realized. The variation of the center frequency, the maximum cutoff level, and the stopband width are quantitatively determined in terms of the size of the lattice of the dielectric rods, the lattice period, and the number of lattice elements. Further, an MSL made of low-temperature cofired ceramic (LTCC) is fabricated and its transmission characteristics are measured. It is confirmed that a desired bandstop characteristic is obtained. © 2006 Wiley Periodicals, Inc. Electron Comm Jpn Pt 2, 89(4): 1–8, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecjb.20220

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