Analysis of Multi-Mode Resonator

Author(s):  
Xiaojun Bi ◽  
Qiang Ma ◽  
Zilan Cao
Keyword(s):  
Author(s):  
Gaurav Saxena ◽  
Priyanka Jain ◽  
Y. K. Awasthi

Abstract In this paper, a ultra-wideband (UWB) bandpass filter with stopband characteristics is presented using a multi-mode resonator (MMR) technique. An MMR is formed by loading three dumbbell-shaped (Mickey and circular) shunt stubs placed in the center and two symmetrical locations from ports, respectively. Three circular and arrowhead defected ground structures on the ground plane are introduced to achieve UWB bandwidth with a better roll-off rate. The proposed filter exhibits stopband characteristics from 10.8 to 20 GHz with a 0.4 dB return loss. The group delay and roll-off rate of the designed filter are <0.30 ns in the passband and 16 dB/GHz at lower and higher cut-off frequencies, respectively. The dimension of the filter is 0.74λg × 0.67λg mm2 and was fabricated on a cost-effective substrate. All simulated results are verified through the experimental results.


2016 ◽  
Vol 58 (10) ◽  
pp. 2419-2422 ◽  
Author(s):  
Pratik Mondal ◽  
Susanta Kumar Parui

2019 ◽  
Vol 13 (12) ◽  
pp. 2013-2019
Author(s):  
Xiaojun Bi ◽  
Luhua Wang ◽  
Qiang Ma ◽  
Baoquan Hu ◽  
Qinfen Xu

2015 ◽  
Vol 8 (7) ◽  
pp. 1031-1035 ◽  
Author(s):  
Ting Zhang ◽  
Fei Xiao ◽  
Xiaohong Tang ◽  
Lei Guo

In this paper, a novel multi-mode resonator is presented, which is formed by cascading several open-circuited transmission line sections with a coupled-line section. Owing to its symmetry, even- and odd-mode analysis methods are applied to analyze its resonance characteristic. Based on this resonator, a microstrip ultra-wide bandwidth (UWB) bandpass filter is designed, fabricated, and measured. The simulated and measured results show that its bandwidth can cover the desired UWB. Return loss in passband is better than −14 dB. This filter is featured by good selectivity and wide stopband. Stopband suppression as low as −40 dB can be achieved within frequency range from 12 to 16 GHz.


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