Ultra-broad band and dual-band highly efficient polarization conversion based on the three-layered chiral structure

2016 ◽  
Vol 81 ◽  
pp. 169-176 ◽  
Author(s):  
Kai-kai Xu ◽  
Zhong-yin Xiao ◽  
Jing-yao Tang ◽  
De-jun Liu ◽  
Zi-hua Wang
Keyword(s):  
Broad Band ◽  
Dual Band ◽  
Polarization Conversion ◽  
Chiral Structure ◽  
Highly Efficient

Realization of bifunction: dual-band absorption and broad band polarization conversion by zigzag birefringent reflective metamaterial

2017 ◽  
Vol 50 (20) ◽  
pp. 205002 ◽  
Author(s):  
Jiao Chen ◽  
Helin Yang ◽  
Guoping Zhang ◽  
Zetai Yu ◽  
Xiaojun Huang ◽  
...  
Keyword(s):  
Broad Band ◽  
Dual Band ◽  
Polarization Conversion ◽  
Band Absorption

Compact e-shape metasurface with dual-band circular polarization conversion

2016 ◽  
Vol 381 ◽  
pp. 48-55 ◽  
Author(s):  
Hailin Cao ◽  
Xiaodong Wu ◽  
Zhoujian Chen ◽  
Chengzhuo Zhu ◽  
Xiaoheng Tan ◽  
...  
Keyword(s):  
Circular Polarization ◽  
Dual Band ◽  
Polarization Conversion

A Highly Efficient Dual-Band Transmitarray Antenna Using Cross and Square Rings Elements

2021 ◽  
Vol 36 (7) ◽  
pp. 852-857
Author(s):  
Yongliang Zhang ◽  
Xiuzhu Lv ◽  
Jiaxuan Han ◽  
Shuai Bao ◽  
Yao Cai ◽  
...  
Keyword(s):  
Satellite Communications ◽  
Dual Band ◽  
Band Ratio ◽  
Maximum Gain ◽  
Aperture Efficiency ◽  
Dielectric Substrates ◽  
Highly Efficient ◽  
X Band ◽  
Transmission Phase ◽  
Ku Band

In this paper, a highly efficient dual-band transmitarray antenna using cross and square rings elements is presented for X and Ku bands. The dual-band transmitarray is designed for downlink/uplink frequencies of Ku band satellite communications. The transmitarray element consists of four metal patches and two dielectric substrates. The metal patch is printed on both sides of the substrate. By optimizing the parameters, the transmitarray element can achieve a transmission phase coverage greater than 360° and work independently in both frequency bands. Then, a method to select the size of the element is proposed, so that all the elements in the array can realize the transmission phase of the two frequencies as much as possible. A 201-elements transmitarray antenna is fabricated and measured and the band ratio of the antenna is 1.13. The measured maximum gain at 11.5 GHz is 22.4 dB, corresponding to the aperture efficiency is 52.7%. The measured maximum gain at 13 GHz is 24.2 dB, corresponding to the aperture efficiency is 62.4%. The 1-dB gain bandwidths are 9.7% (10.8-11.9 GHz) at X band and 9% (12.6-13.8 GHz) at Ku band.

Dual-Band Ultrathin Meta-Array for Polarization Conversion in Ku/Ka-Band With Broadband Transmission

2020 ◽  
Vol 19 (5) ◽  
pp. 856-860 ◽  
Author(s):  
Ayesha Kosar Fahad ◽  
Cunjun Ruan ◽  
Rabia Nazir ◽  
Tanveer Ul Haq ◽  
Wenlong He
Keyword(s):  
Dual Band ◽  
Polarization Conversion ◽  
Ka Band

scholarly journals Highly Efficient Broad-Band Luminescence Involving Organic and Inorganic Molecules in a Zero-Dimensional Hybrid Lead Chloride

2019 ◽  
Vol 123 (36) ◽  
pp. 22470-22477 ◽  
Author(s):  
Aymen Yangui ◽  
Rachel Roccanova ◽  
Yuntao Wu ◽  
Mao-Hua Du ◽  
Bayrammurad Saparov
Keyword(s):  
Broad Band ◽  
Lead Chloride ◽  
Highly Efficient ◽  
Inorganic Molecules

Photon upconversion-assisted dual-band luminescence solar concentrators coupled with perovskite solar cells for highly efficient semi-transparent photovoltaic systems

Nanoscale ◽  
2020 ◽  
Vol 12 (23) ◽  
pp. 12426-12431 ◽  
Author(s):  
Kiwon Kim ◽  
Seong Kyung Nam ◽  
Jinhan Cho ◽  
Jun Hyuk Moon
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Photovoltaic System ◽  
Dual Band ◽  
Photovoltaic Systems ◽  
Solar Concentrators ◽  
Highly Efficient

A photovoltaic system that combines photon upconversion-assisted luminescence solar concentrators and perovskite solar cells is demonstrated.

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