Tri-Band Bandpass Filter Using Open Loop Resonator Loaded by One Stub with Three Branches

Abstract:

To obtain an adjustable passband filter, one open stub with three branches is loaded on an open loop resonator. The first and the third passband frequencies of the tri-band filter can be flexibly controlled by tuning lengths of three branches, whereas the second passband frequency is fixed. The fabricated filter has good tri-passband performance at 2.19, 4.26, 6.30 GHz. Measured results agree well with the simulated ones.

• Periodical: Applied Mechanics and Materials (Volumes 513-517)
• Pages: 2791-2794
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.513-517.2791
• Online since: February 2014
• Authors: Xing Bing Ma*, Feng Shan Zhang, Cai Feng Liang
• Keywords: Bandpass Filter, Open Loop Resonator, Three Branches, Tri-Band

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