Results 21 to 30 of about 5,758 (284)

Switchable linear to circular polarization conversion in reflection and transmission modes based on vanadium-dioxide [PDF]

Scientific Reports
A design of a switchable dual-mode linear-to-circular polarization converter (LTC-PC) in the terahertz (THz) band is reported based on vanadium dioxide (VO2).
Eman M. Eldesouki, Ahmed Elsayed Abouelez   +1 more
doaj   +2 more sources

Broadband Linear to Circular Reflection Polarization Converter

2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, 2019
A broadband linear to circular polarization converting surface is presented. The polarization reflector consists of a dogbone-shaped FSS separated from the metallic ground plane by a Teflon dielectric slab of thickness equal to 3.95 mm. The polarization converter is composed by a periodic arrangement of metallic particles, positioned in a square ...
Costa F., Genovesi S., Monorchio A., Zhang S., Cui Y., Liu J.   +5 more
openaire   +2 more sources

Polarization converter post-processing for integrated polarization independent SOA [PDF]

, 2012
Post-processing of a polarization converter (PC) in an experimental industrial generic foundry process is demonstrated. Insertion of the PC halfway an SOA reduced its polarization dependence from 14 dB to 3 dB.
Felicetti, M., Tol, van der, J.J.G.M., Geluk, E.J., Smit, M.K.   +3 more
openaire   +2 more sources

Polarization based filtering in a wavelength converter [PDF]

, 2007
A new scheme is demonstrated to filter signals after a wavelength converter based on integrated polarization components. This allows polarization independent conversion, co-propagating operation without a tuneable filter, and it facilitates conversion to the same wavelength.
Augustin, L.M., Tol, van der, J.J.G.M., Smit, M.K.   +2 more
openaire   +2 more sources

Ultra-efficiency broadband terahertz polarization converter based on a cross-shaped metamaterial

AIP Advances, 2022
In this study, we describe the design, fabrication, and characterization of a cross-shaped structure reflective broadband THz polarization converter. The operating bandwidth of the proposed polarization converter was in the range of 0.8–1.6 THz.
Wenjia Liu, Yonggang Zhang, Lanju Liang, Haiyun Yao, Xin Yan, Fu Qiu, Chengcheng Huang, Weili Li, Yihui Tan, Weiran Li, Yuxuan Huang, Jingbo Wu, Caihong Zhang, Biaobing Jin   +13 more
doaj   +1 more source

Compact 2-step Septulum Polarization Converters for Radars and Satellite Systems

Advanced Electromagnetics, 2022
This article presents the results of analysis, numerical simulations and optimization of new narrowband guide septulum polarization converters. Orthomode duplexers and polarization converter designs based on septulums are widely used in modern microwave
S. Piltyay, A. Bulashenko, I. Fesyuk, O. Bulashenko   +3 more
doaj   +3 more sources

A four-sector polarization converter integrated in a calcite crystal [PDF]

Компьютерная оптика, 2018
A new approach to the implementation of sectorial plates for beam polarization conversion is proposed. Using a newly developed etching technology, a four-sector polarization converter integrated into a calcite crystal is implemented.
Sergei Karpeev, Vladimir Podlipnov,, Svetlana Khonina, Vyacheslav Paranin, Anton Reshetnikov   +4 more
doaj   +1 more source

Ultra-wideband and high-efficiency cross-polarization conversion using a double split ring shaped metasurface for C, X, and Ku-band applications

AIP Advances, 2022
Polarization converters play an important role in practical applications to manipulate the electromagnetic wave. However, the development of a polarization converter that possesses both high conversion efficiency and a wide frequency band is very ...
Thi Minh Nguyen, Huu Lam Phan, Dinh Lam Vu, Thi Quynh Hoa Nguyen, Jung-Mu Kim   +4 more
doaj   +1 more source

Full-space polarization conversion of electromagnetic waves at terahertz frequency based on metasurface

Materials Research Express, 2022
In this paper, a full-space electromagnetic wave polarization converter working in the terahertz frequency was put forward, and its physical mechanism was also analyzed.
Xunyong Pan, Yingji Mao, Ziyi Zhu, Aoli Liu   +3 more
doaj   +1 more source

A circularly polarized folded reflectarray antenna using a polarization-sensitive linear-to-circular polarization converter

Frontiers in Physics, 2022
This work proposes a low-profile circularly polarized folded reflectarray antenna (CPFRA). Compared to traditional CPFRA that comprise the main reflectarray, a polarization grid (PG), and a linear-to-circular polarization (LP-CP) converter, the proposed ...
Shuang Liu, Yin Li, Sai-Wai Wong, Xiao Zhang, Shiyan Wang, Liang Fang, Qiang Gao   +6 more
doaj   +1 more source