Abstract
AbstractDual‐band planar bandpass filter, using two microstrip rectangular ring resonators, is proposed for wireless LAN system such as IEEE 802.11 systems (2.4 or 5 GHz). The miniaturized bandpass filter is implemented using a high permittivity dielectric substrate. The full‐wave simulator IE3D is used to design the two coupled rectangular ring resonators. The responses of the implemented filter using Zr0.8Sn0.2TiO4 (εr = 37, tan δ = 0.00012) dielectric substrates are designed at dual‐band frequencies of 2.35 and 4.7 GHz. The compacted size and good agreement have been obtained between simulations and implementation results. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2236–2238, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22677
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