Dual-band planar rectangular ring microwave bandpass filter using high permittivity substrate

✍ Scribed by Cheng-Hsing Hsu; Chia-Hsien Lin; Sen-Hung Huang; Chung-I G. Hsu; Cheng-Chi Yu; Hsin-Han Tung

• Publisher: John Wiley and Sons
• Year: 2007
• Tongue: English
• Weight: 154 KB
• Volume: 49
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/mop.22666

✦ Synopsis

Abstract

Dual‐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 Zr~0.8~Sn~0.2~TiO~4~ (ε~r~ = 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