scholarly journals Compact polarization-independent quasi-adiabatic 2×2 3 dB coupler on silicon

2021 ◽  
Author(s):  
Hung-Ching Chung ◽  
Chih-Hsien Chen ◽  
Yung-Jr Hung ◽  
Shuo-Yen Tseng
Keyword(s):  
Polarization Independent

Refractive Index Sensors using Polarization-independent Metamaterial

2017 ◽  
Vol 137 (11) ◽  
pp. 415-416 ◽  
Author(s):  
Tomoki Shimizu ◽  
Yoshiaki Kanamori ◽  
Kazuhiro Hane
Keyword(s):  
Refractive Index ◽  
Refractive Index Sensors ◽  
Polarization Independent

scholarly journals Gradient pretilt angle alignment materials with different photosensitivity for tunable polarization‐independent self‐aligned liquid crystal lens

2021 ◽  
Author(s):  
Veronika S. Bezruchenko ◽  
Alexander A. Muravsky ◽  
Anatoli A. Murauski ◽  
Alexander I. Stankevich ◽  
Uladzimir V. Mahilny
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystal Lens ◽  
Polarization Independent ◽  
Pretilt Angle

Polarization independent and broadband achromatic metalens in ultraviolet spectrum

2021 ◽  
Vol 497 ◽  
pp. 127182
Author(s):  
Mian Liu ◽  
Nianxi Xu ◽  
Benxin Wang ◽  
Weiying Qian ◽  
Bin Xuan ◽  
...  
Keyword(s):  
Ultraviolet Spectrum ◽  
Polarization Independent

Angle and polarization-independent miniaturized UWB FSS design

2021 ◽  
pp. 1-9
Author(s):  
Yanning Yuan ◽  
Yuchen Zhao ◽  
Xiaoli Xi
Keyword(s):  
Design Method ◽  
Incident Angle ◽  
Stop Band ◽  
Single Layer ◽  
Wireless Systems ◽  
Frequency Selective Surface ◽  
Ultra Wideband ◽  
Band Frequency ◽  
Gain Enhancement ◽  
Polarization Independent

Abstract A single-layer ultra-wideband (UWB) stop-band frequency selective surface (FSS) has several advantages in wireless systems, including a simple design, low debugging complexity, and an appropriate thickness. This study proposes a miniaturized UWB stop-band FSS design. The proposed FSS structure consists of a square-loop and metalized vias that are arranged on a single layer substrate; it has an excellent angle and polarization-independent characteristics. At an incident angle of 60°, the polarization response frequencies of the transverse electric and magnetic modes only shifted by 0.003 f0 and 0.007 f0, respectively. The equivalent circuit models of the square-loop and metallized vias structure are analysed and the accuracy of the calculation is evaluated by comparing the electromagnetic simulation. The 20 × 20 array constitutes an FSS reflector with a unit size of 4.2 mm × 4.2 mm (less than one-twentieth of the wavelength of 3 GHz), which realizes an UWB quasi-constant gain enhancement (in-band flatness is <0.5 dB). Finally, the simulation results were verified through sample processing and measurement; consistent results were obtained. The FSS miniaturization design method proposed in this study could be applied to the design of passband FSS (complementary structure), antennas and filters, among other applications.

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