Simulation of a broad band circularly polarized crossbow tie antenna at terahertz waves using hybrid approach of FEM and geometric optics

2013 ◽  
Author(s):  
Amna Mir ◽  
Hairui Liu ◽  
Junsung Yu
Keyword(s):  
Broad Band ◽  
Hybrid Approach ◽  
Geometric Optics ◽  
Terahertz Waves ◽  
Circularly Polarized

scholarly journals Efficient manipulations of circularly polarized terahertz waves with transmissive metasurfaces

2019 ◽  
Vol 8 (1) ◽  
Author(s):  
Min Jia ◽  
Zhuo Wang ◽  
Heting Li ◽  
Xinke Wang ◽  
Weijie Luo ◽  
...  
Keyword(s):  
Terahertz Waves ◽  
Circularly Polarized

Anisotropic asymmetric transmission of circularly polarized terahertz waves in a three-dimensional spline assembly

2020 ◽  
Vol 45 (8) ◽  
pp. 2315
Author(s):  
C. K. Amaljith ◽  
C. Venkateswaran ◽  
V. Subramanian ◽  
Zhengbiao Ouyang ◽  
N. Yogesh
Keyword(s):  
Three Dimensional ◽  
Terahertz Waves ◽  
Asymmetric Transmission ◽  
Circularly Polarized

scholarly journals Polymer encapsulation and stabilization of molecular gel-based chiroptical information for strong, tunable circularly polarized luminescence film

2020 ◽  
Vol 8 (26) ◽  
pp. 8732-8735 ◽  
Author(s):  
Hisashi Oishi ◽  
Sayaka Mashima ◽  
Yutaka Kuwahara ◽  
Makoto Takafuji ◽  
Kyohei Yoshida ◽  
...  
Keyword(s):  
Polymer Film ◽  
Self Assembly ◽  
Broad Band ◽  
Circularly Polarized ◽  
Polymer Encapsulation ◽  
Strategic Approach ◽  
Circularly Polarized Luminescence ◽  
Polarized Luminescence

We demonstrate a strategic approach for a completely organic, chiroptical polymer film, exhibiting strong and broad-band CPL that can be realized by the stabilization of self-assembly-driven secondary chirality through polymer encapsulation.

A broad band circularly polarized cross slot cavity back array antenna with sequentially rotated feed network for improving gain in X-band application

2016 ◽  
Vol 9 (3) ◽  
pp. 705-710 ◽  
Author(s):  
Majid- Fakheri ◽  
Mohammad Naser-Moghadasi ◽  
Ramezan Ali- Sadeghzadeh
Keyword(s):  
Antenna Array ◽  
Mutual Coupling ◽  
Broad Band ◽  
Optimization Procedure ◽  
Axial Ratio ◽  
Slot Antenna ◽  
Impedance Bandwidth ◽  
Circularly Polarized ◽  
Feed Network ◽  
And Performance

This paper presents a new broad band circularly polarized slot antenna array based on substrate-integrated waveguide (SIW) and aperture feeding techniques. The antenna element's impedance and 3 dB axial-ratio (AR) bandwidths are from 8.8 to 10.4 GHz (16.67%) and 9.5–10.7 GHz (12%), respectively. Employing aperture-coupled feed and combining this method with sequentially rotated network, a 2 × 2 antenna array is achieved. Parametric optimization procedure is used to enhance the antenna specifications. In the presented scheme by reducing mutual coupling caused by the SIW technique and sequentially rotated feed network, all parameters of antenna are improved. Consequently a novel antenna array with impedance bandwidth of 2.8 GHz (8.7–11.5 GHz) and 3 dB AR bandwidth of 2.1 GHz (9–11.05 GHz) are obtained. The average gain of the proposed antenna is about 16.7 dBic. A new method is used to increase the gain of antenna array. The extracted result shows that side lob level, mutual coupling, impedance bandwidth, and performance of antenna simultaneously are controlled.

Sign in / Sign up

Export Citation Format

Share Document