I. Tang, Wei-Shuo Wu, Jhe-Hao Syu, Simon Cimin Li, Chi-Min Li
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WiMAX bandpass filter using hybrid microstrip Defected-Ground-Structure
A novel and compact WiMAX microstrip bandpass filter is proposed. The filter employs a very wide bandwidth from 2 to 11 GHz under NLOS environment of the IEEE 802.16-2004 standard, and with a 3-dB fractional bandwidth of greater than 138%. The proposed hybrid WiMAX band-pass filter had return loss more than 17 dB in the passband, and also demonstrated a reject band from 12.4 GHz to more than 20 GHz at −20 dB.
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