Abstract

AbstractTwo novel low‐pass filters (LPFs) of wide stop‐band are proposed in this paper. One filter is implemented by a photonic band‐gap (PBG) microstrip structure with T‐junction opened stubs and its frequency characteristics are discussed. The other filter is implemented by a PBG microstrip structure with cross‐junction opened stubs. The new wide‐band harmonic rejection LPFs are easy to design and fabricate. The simulated and experimental results verify the validity of the LPFs. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 37: 470–472, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10953

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