Compact Tri-Band Bandpass Filter Based on Ring Multi-Mode Resonator

2019 ◽  
Author(s):  
Daotong Li ◽  
Dongwu Wang ◽  
Ying Liu ◽  
Xiaoquan Chen ◽  
Haowei Wu
Keyword(s):  
Bandpass Filter ◽  
Multi Mode ◽  
Mode Resonator

Design and analysis of a planar UWB bandpass filter with stopband characteristics using MMR technique

2021 ◽  
pp. 1-8
Author(s):  
Gaurav Saxena ◽  
Priyanka Jain ◽  
Y. K. Awasthi
Keyword(s):  
Return Loss ◽  
Group Delay ◽  
Bandpass Filter ◽  
Ground Plane ◽  
Cost Effective ◽  
Ultra Wideband ◽  
Defected Ground Structures ◽  
Ground Structures ◽  
Multi Mode ◽  
Mode Resonator

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.

A compact sept‐band bandpass filter utilising a single multi‐mode resonator

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

A multi-mode resonator-based UWB bandpass filter with wide stopband

2015 ◽  
Vol 8 (7) ◽  
pp. 1031-1035 ◽  
Author(s):  
Ting Zhang ◽  
Fei Xiao ◽  
Xiaohong Tang ◽  
Lei Guo
Keyword(s):  
Return Loss ◽  
Bandpass Filter ◽  
Mode Analysis ◽  
Frequency Range ◽  
Coupled Line ◽  
Resonance Characteristic ◽  
Line Section ◽  
Multi Mode ◽  
Mode Resonator ◽  
Better Than

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.

Compact Tunable Balanced Bandpass Filter With Novel Multi-Mode Resonator

2017 ◽  
Vol 27 (1) ◽  
pp. 43-45 ◽  
Author(s):  
Shi-Xuan Zhang ◽  
Zhi-Han Chen ◽  
Qing-Xin Chu ◽  
Senior Member
Keyword(s):  
Bandpass Filter ◽  
Multi Mode ◽  
Mode Resonator

scholarly journals Multi-mode resonator for ultra-wide bandpass filter with good stopband performance

2019 ◽  
Vol 537 ◽  
pp. 052025
Author(s):  
I V Podshivalov ◽  
M O Savishnikov ◽  
A A Leksikov ◽  
D D Dmitriev ◽  
I N Kartsan
Keyword(s):  
Bandpass Filter ◽  
Multi Mode ◽  
Mode Resonator

Wideband Bandpass Filter with High Selectivity and an Adjustable Notched-band Adopting a Multi-mode Resonator

Frequenz ◽  
2018 ◽  
Vol 72 (5-6) ◽  
pp. 237-243
Author(s):  
Xing-Bing Ma ◽  
Ting Jiang
Keyword(s):  
High Selectivity ◽  
Bandpass Filter ◽  
Characteristic Impedance ◽  
Resonant Mode ◽  
Open Loop ◽  
Side Length ◽  
Notched Band ◽  
Bottom Side ◽  
Multi Mode ◽  
Mode Resonator

AbstractA wideband bandpass filter (BPF) with an adjustable notched-band and high selectivity is proposed. The proposed BPF consists of a multi-mode resonator (MMR), twoλ/2 resonators, and I/O feed lines with 50 ohm characteristic impedance. The MMR, connected as a whole by a wide stub, is composed of one I-shaped resonator and two open-loop resonators. Tightly coupling is built between MMR andλ/2 resonators. I/O feed lines are directly connected with twoλ/2 resonators, respectively. Due to the use of tapped-line coupling, one transmission zero (TZ) is formed near low-edge of aim passband. High-edge of passband with one attendant TZ can be tuned to desired location by adjusting bottom-side position of used wide stub or bottom-side length of I-shaped resonator in MMR. The top-side length of I-shaped resonator is applied to improve upper stopband performance and shift undesired resonant mode of MMR near high-edge of aim passband to proper frequency point. The notched-band in aim passband is dominated by top-side position of wide stub in MMR. Good agreement is observed between simulated and measured results.

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