Zeroth-order resonance phenomenon in an acoustic composite right/left-handed metamaterial resonator

2017 ◽  
Vol 142 (4) ◽  
pp. 2298-2310 ◽  
Author(s):  
Wan-Gu Kim ◽  
Hwi Suk Kang ◽  
Suk Wang Yoon ◽  
Kang Il Lee
Keyword(s):  
Resonance Phenomenon ◽  
Zeroth Order ◽  
Order Resonance ◽  
Left Handed

Novel 2D CRLH TL and Its ZOR and FOR Applied on Dual-Band Omnidirectional Radiation Antenna

Frequenz ◽  
2015 ◽  
Vol 69 (11-12) ◽  
Author(s):  
Tian-Peng Li ◽  
Guang-Ming Wang ◽  
Feifei Duan ◽  
Cheng Zhou ◽  
Rui-Lian Tan
Keyword(s):  
Transmission Lines ◽  
Dual Band ◽  
Cross Polarization ◽  
Zeroth Order ◽  
One Dimensional ◽  
Order Resonance ◽  
First Order ◽  
Left Handed ◽  
Symmetric Structure ◽  
New Type

AbstractA new type of two-dimensional (2D) composite right/left-handed transmission lines (CRLH TL) which is composed of four one-dimensional (1D) CRLH TL is proposed in this letter. Each 1D CRLH TL consists of three metallic vias added for shunt inductance and an etched patch slot for series capacitance. Based on this structure, an antenna operating on zeroth-order resonance (ZOR) and first-order resonance (FOR) is designed and fabricated. By taking advantage of coaxially center feed and symmetric structure, a well omnidirectional radiation in XoY plane both in ZOR and FOR and a homogeneously suppressed cross-polarization is obtained. Also, the antenna has a gain value of 2.06 dB in ZOR

Novel Two-Dimensional CRLH TL and its Application on Tri-Band Omnidirectional Antenna

Frequenz ◽  
2018 ◽  
Vol 72 (7-8) ◽  
pp. 359-363
Author(s):  
Tian-peng Li ◽  
Xue Lei ◽  
Huixu Dong ◽  
Ke Wen ◽  
Jun Gao
Keyword(s):  
Transmission Line ◽  
Two Dimensional ◽  
Antenna Gain ◽  
Zeroth Order ◽  
Order Resonance ◽  
First Order ◽  
Omnidirectional Antenna ◽  
Left Handed ◽  
Symmetric Structure ◽  
New Type

Abstract A new type of two-dimensional composite right/left handed transmission line (2D CRLH TL) is proposed in this letter. Utilizing this structure, an antenna operating on GLONASS and WLAN based on dual zeroth-order resonance (ZOR) mode and first-order resonance (FOR) mode is designed and fabricated. By taking advantage of coaxially center feed and symmetric structure, nearly all omnidirectional radiations in XOY plane at three operating frequencies is obtained. Furthermore, the antenna gain has a high value of −1.27 dB in f1=1.60 GHz, −3.89 dB in f2=2.39 GHz and 0.67 dB in f3=5.12 GHz respectively.

scholarly journals Compact Wideband Dual-Frequency Antenna Based on a Simplified Composite Right/Left-Handed Transmission Line with Hilbert Curve Loading

2019 ◽  
Vol 2019 ◽  
pp. 1-8
Author(s):  
Tianpeng Li ◽  
Jian Zhang ◽  
Baowei Cheng ◽  
Xue Lei ◽  
Zhijian Xu ◽  
...  
Keyword(s):  
Transmission Line ◽  
Coplanar Waveguide ◽  
Antenna Design ◽  
Dual Frequency ◽  
Hilbert Curve ◽  
Order Resonance ◽  
Line Structure ◽  
Left Handed ◽  
Antenna Length ◽  
Bandwidth Broadening

This paper addresses the issues of low bandwidth, gain, and efficiency of miniaturized microwave antennas by proposing a novel wideband dual-frequency coplanar waveguide antenna design based on a simplified composite right/left-handed (SCRLH) transmission line structure with Hilbert curve loading. The multifrequency characteristics of the SCRLH transmission line structure are evaluated theoretically, and the antenna parameters promoting bandwidth broadening under zeroth-order resonance (ZOR) and first-order resonance (FOR) mode operation are evaluated. The bandwidth broadening in the ZOR and FOR modes is accordingly revealed to be independent of the antenna length, and the structure therefore facilitates wideband operation under miniaturization. Finally, the dual-frequency ZOR and FOR mode antenna design with center frequencies of f0 = 1.865 GHz and f1 = 2.835 GHz is validated via simulation, and the performance of a compact prototype antenna is evaluated experimentally. The −10 dB return loss bandwidths at f0 and f1 are 187 MHz (from 1.773 GHz to 1.96 GHz) and 368 MHz (from 3.002 GHz to 3.37 GHz), and the corresponding relative bandwidths are 10.1% and 11.5%, respectively. The experimentally measured peak gains and radiation efficiencies at f0 are 1.54 dB and 81.3%, respectively, and those at f1 are 1.71 dB and 74.2%, respectively.

scholarly journals Design of dualband metamaterial bandpass filter using zeroth order resonance

2009 ◽  
Author(s):  
Geonho Jang ◽  
Eun Ch Shin ◽  
Cheon-Hee Lee ◽  
Chul-Min Shin ◽  
Sungtek Kahng
Keyword(s):  
Bandpass Filter ◽  
Zeroth Order ◽  
Order Resonance
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