Compact Ultra-Wideband Bandpass Filter Using Dual-Line Coupling Structure

  title={Compact Ultra-Wideband Bandpass Filter Using Dual-Line Coupling Structure},
  author={Kaijun Song and Yong Fan},
  journal={IEEE Microwave and Wireless Components Letters},
This letter presents a novel compact ultra-wideband (UWB) microstrip bandpass filter with spurious response suppression. A dual-mode ring resonator is constituted to allocate its first two resonant frequencies in the UWB band, and the dual-line parallel-coupled structure is used in this compact UWB filter, which is expected to achieve much tighter coupling degree. Simulated and measured results are found in good agreement with each other, showing a wide passband from 4.9 to 10.9 GHz, 15 dB… CONTINUE READING
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