Planar Ultra-Wideband Bandpass Filter Using Edge Coupled Microstrip Lines and Stepped Impedance Open Stub

2007 ◽  
Vol 17 (9) ◽  
pp. 649-651 ◽  
Author(s):  
Pramod K. Singh ◽  
Sarbani Basu ◽  
Yeong-Her Wang
Keyword(s):  
Bandpass Filter ◽  
Ultra Wideband ◽  
Microstrip Lines

scholarly journals Hybrid Microstrip/Slotline Ultra-Wideband Bandpass Filter with a Controllable Notch Band

2017 ◽  
Vol 2017 ◽  
pp. 1-7
Author(s):  
Xuehui Guan ◽  
Ping Gui ◽  
Tao Xiong ◽  
Baoping Ren ◽  
Lei Zhu
Keyword(s):  
Patch Size ◽  
Bandpass Filter ◽  
Circuit Model ◽  
Ultra Wideband ◽  
Microstrip Resonator ◽  
Microstrip Lines ◽  
Notch Band ◽  
Degenerate Modes

An ultra-wideband (UWB) bandpass filter (BPF) with a controllable notch band is presented by using hybrid microstrip/slotline structure. Firstly, a slotline resonator with symmetrically loaded stubs is fed by two microstrip lines to produce a UWB bandpass filtering response. Secondly, a microstrip triangular loop resonator is externally loaded over the slotline, and a notch band is introduced in the UWB passband. The notch band is determined by the perimeter of the loop resonator. Thirdly, two patches are added as the perturbation element to the corners of the microstrip resonator to excite a pair of degenerate modes. Bandwidth of the notch band can be tuned by properly selecting the patch size. Circuit model for the microstrip resonator loaded slotline is given and studied. Finally, the filter is designed, simulated, and measured. Measured results have agreed well with the simulated ones, demonstrating that a UWB filter with a controllable notch band has been realized.

A hybrid surface-to-surface transition-based UWB-BPF with multiple in-band interference suppression

2019 ◽  
Vol 11 (2) ◽  
pp. 168-174
Author(s):  
Abu Nasar Ghazali ◽  
Jabir Hussain ◽  
Srikanta Pal
Keyword(s):  
Interference Mitigation ◽  
Bandpass Filter ◽  
Ground Surface ◽  
Basic Structure ◽  
Ultra Wideband ◽  
Ring Resonators ◽  
Split Ring ◽  
Microstrip Lines ◽  
Transmission Zeros ◽  
Surface Transition

AbstractA compact ultra-wideband (UWB) bandpass filter (BPF) based on surface-to-surface transition technology with features of extended stopband and integrated interference mitigation characteristics is proposed. The basic structure consists of a modified multiple-mode resonator (MMR)-based co-planar waveguide in the ground surface and coupled in broadside manner with the microstrip lines on the top surface. Later, two open-circuited stubs are embedded in the feeding lines and two complementary split ring resonators are etched in the MMR to implement multiple in-band transmission zeros so as to circumvent interference. A prototype is fabricated and measured to validate the results obtained in simulation. The proposed UWB-BPF is compact in size with overall dimensions of 17.82 by 11.08 mm2.

scholarly journals Investigation of 3D ultra-wideband bandpass filter model based on microstrip multimode resonators

2021 ◽  
Vol 1745 (1) ◽  
pp. 012064
Author(s):  
B A Belyaev ◽  
S A Khodenkov ◽  
N A Shepeta ◽  
A M Popov
Keyword(s):  
Bandpass Filter ◽  
Ultra Wideband ◽  
Filter Model ◽  
Model Based

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.

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