Compact tri-band BPF applying novel multi-mode microstrip resonator
作者： Jianzhong Chen , Zixian Wu , Hongyu Shi , Lei Lin
DOI: 10.1002/MMCE.21006
关键词: Helical resonator 、 Electronic engineering 、 Electrical impedance 、 Engineering 、 Stopband 、 Resonator 、 Acoustics 、 Filter (video) 、 Harmonics 、 Dielectric resonator antenna 、 Equivalent circuit
摘要: This article presents a novel multi-mode microstrip resonator. Using the even-odd-mode method, its resonance characteristics are analyzed and design graphs given. Each mode equivalent circuit is λ/4 stepped impedance resonator SIR, so proposed has compact size higher harmonics can be tuned in wide range. Stub-stub coupling introduced to split two identical modes produce transmission zeros TZs. Then tri-band filter operating at 1.5, 2.4, 3.8 GHz designed using The three center frequencies bandwidths independently controlled. By tuning length ratios of stubs, upper stopband achieved. Finally, fabricated measured, measured results agree well with simulated ones. © 2016 Wiley Periodicals, Inc. Int J RF Microwave CAE 26:559-564, 2016.
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