New compact ultra wideband bandpass filter using modified multi-mode resonator

作者：Wu Hung Wei^*; Chen Yu Fu

来源：AEU-International Journal of Electronics and Communications, 2012, 66(12): 1021-1025.

DOI：10.1016/j.aeue.2012.05.007

• UWB
• Bandpass filter
• Spur-line
• Dual notch bands
• Stepped impedance structure

A new compact ultra wideband (UWB) bandpass filter (BPF) using modified multi-mode resonator (MMR) is presented. The filter consists of a multi-mode resonator with dual spur-lines for providing the dual notch bands at 5.2 and 5.8 GHz and connected with a stepped impedance structure for controlling the transmission zeros at lower and higher passband edge. The interdigital coupling input/output (I/O) lines are used for coupling enhancement. The vertical bar S-21 vertical bar-magnitude and the frequencies of notch bands can be well determined by tuning the dimensions of the dual spur-lines. The designed procedures are discussed and good agreement between the measurement and EM simulation are compared.

• 出版日期2012