Low Frequency Ultra-Thin Compact Metamaterial Absorber Comprising Split-Ring Resonators

2014 ◽  
Vol 31 (6) ◽  
pp. 067801 ◽  
Author(s):  
Bao-Qin Lin ◽  
Xin-Yu Da ◽  
Shang-Hong Zhao ◽  
Wen Meng ◽  
Fan Li ◽  
...  
Keyword(s):  
Low Frequency ◽  
Metamaterial Absorber ◽  
Ring Resonators ◽  
Split Ring ◽  
Split Ring Resonators

scholarly journals Polarization-Independent and Angle-Insensitive Metamaterial Absorber Using 90-Degree-Rotated Split-Ring Resonators

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Jia-Qi Feng ◽  
Wei-Dong Hu ◽  
Qing-Le Zhang ◽  
Hua Zong ◽  
Hui Huang ◽  
...  
Keyword(s):  
Incident Angle ◽  
Metamaterial Absorber ◽  
Ring Resonators ◽  
Naval Research ◽  
Split Ring ◽  
Split Ring Resonators ◽  
Full Wave ◽  
X Band ◽  
Polarization Insensitive ◽  
Polarization Independent

We present the design, simulation, and measurement of a polarization-independent and angle-insensitive metamaterial absorber (MA) in X-band. Since the unit cell of the MA consists of four subwavelength split-ring resonators with 4-fold symmetric rotation, the MA is insensitive to the variation of both polarization and incident angle of the planar electromagnetic wave. The electromagnetic performances of the MA are studied by full-wave simulations based on finite-element method and the Naval Research Laboratory arch experimental measurements. The electric field distributions are numerically investigated, which confirm the polarization-insensitive property of the MA, as expected from the symmetric nature of the structure. When the incident angles vary from 0 to 45 degrees, the MA remains at full width at half maximum of 0.4 GHz (0.5 GHz) with peak absorptions of 99.9% (95.2%) at 10.27 GHz (10.3 GHz) by simulations (measurements).

scholarly journals A Compact Quasi-Yagi Antenna with High Gain by Employing the Bent Arms and Split-Ring Resonators

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Wen-Ying Zhou ◽  
Zhong-Lei Mei ◽  
Mai Lu
Keyword(s):  
Low Frequency ◽  
High Gain ◽  
Ring Resonators ◽  
Center Frequency ◽  
Split Ring ◽  
Compact Structure ◽  
Split Ring Resonators ◽  
Compact Antenna ◽  
Yagi Antenna ◽  
Point To Point

A compact quasi-Yagi antenna with bent arms and split-ring resonators (SRRs) is proposed. Compared with traditional quasi-Yagi antennas employing straight arms, the resonant frequency of the proposed antenna could be always consistent with its center frequency, and there is no obvious frequency shift under the process of its miniaturization. The SRRs are adopted in the proposed compact antenna for a high gain of 6.58 dBi. The reliability verification of the proposed antenna radiation characteristics is further experimentally proved with the prototype measurement. The proposed quasi-Yagi antenna has an adjustable compact structure and low frequency offset and could be used in the precise point-to-point wireless communication environment.

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