Ultra-wideband bandpass filter using simplified left-handed transmission line structure

2008 ◽  
Vol 50 (11) ◽  
pp. 2758-2762 ◽  
Author(s):  
Wenjia Han ◽  
Yijun Feng
Keyword(s):  
Transmission Line ◽  
Bandpass Filter ◽  
Ultra Wideband ◽  
Line Structure ◽  
Left Handed

Design of Ultra-Wideband Bandpass Filter Based on Composite Right/Left Handed Transmission Line

2012 ◽  
Vol 460 ◽  
pp. 66-69
Author(s):  
Bing Gang Xiao ◽  
Peng Ye ◽  
Zhi Yi Xie ◽  
Han Liu
Keyword(s):  
Wireless Communication ◽  
Transmission Line ◽  
Communication Technology ◽  
Bandpass Filter ◽  
Rapid Development ◽  
Ultra Wideband ◽  
Simulation Tool ◽  
Scattering Parameters ◽  
Left Handed ◽  
Industry Standard

As one of the most important devices in the ultra-wideband (UWB) wireless communication system, UWB filter has received more and more attention with the rapid development of UWB wireless communication technology. In this paper, an ultra-wideband bandpass filter based on composite right/left handed transmission line (CRLH TL) is designed. The filter are simulated and optimized by the industry-standard simulation tool HFSS to examine the correctness and effectiveness of the design with the simulated scattering parameters S11 and S21.

Highly compact UWB bandpass filter based on composite right/left-handed transmission line and meander fractal like ring slot in ground

2016 ◽  
Vol 9 (5) ◽  
pp. 1037-1044
Author(s):  
Babu Lal Shahu ◽  
Srikanta Pal ◽  
Neela Chattoraj ◽  
Dileep Kumar Upadhyay
Keyword(s):  
Transmission Line ◽  
Insertion Loss ◽  
Return Loss ◽  
Bandpass Filter ◽  
Ground Plane ◽  
Equivalent Circuit Model ◽  
Ultra Wideband ◽  
Left Handed ◽  
Conductor Strip ◽  
Better Than

An ultra-wideband (UWB) highly compact bandpass filter with extremely high passband bandwidth is presented. The proposed structure is made using three-staged stepped-impedance lines and a composite right/left-handed transmission line (CRLH-TL) synthesized with meander fractal like ring slot in the ground and series capacitive gap in conductor strip. The capacitive gap in conductor strip and meander fractal like ring slot in the ground plane play major role for controlling the lower and higher cut-off frequencies. The equivalent circuit model of proposed filter is demonstrated and lumped parameters are extracted. A prototype is fabricated to experimentally validate the performance of proposed filter. The proposed UWB filter has extremely wide −10 dB return loss passband bandwidth from 3.14 to 18.26 GHz with relative bandwidth of 142% and insertion loss better than 0.5 dB. Also it achieves a wide upper-stopband from 19.7 to 24.4 GHz with insertion loss better than 13.0 dB, return loss <1.5 dB and sharpened rejection skirts outside the passband at both lower and upper frequency ends. Good agreement is found between simulated and measured results with measured group delay variation in the passband <0.65 ns.

SIMPLIFIED EXTENDED COMPOSITE RIGHT/LEFT-HANDED TRANSMISSION LINE STRUCTURE FOR DUAL-BAND APPLICATIONS

2010 ◽  
Vol 15 ◽  
pp. 137-144 ◽  
Author(s):  
Li Qiang ◽  
Hongmin Lu ◽  
Wei Zhao ◽  
Ji-Kang Wang ◽  
Bing Liu
Keyword(s):  
Transmission Line ◽  
Dual Band ◽  
Line Structure ◽  
Left Handed
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