A dual‐function switchable and frequency tunable active frequency selective surface

2021 ◽  
Author(s):  
Yulin Liang ◽  
Mingsong Chen ◽  
Lin Peng ◽  
Zihan Li
Keyword(s):  
Frequency Selective Surface ◽  
Dual Function ◽  
Frequency Tunable ◽  
Frequency Selective

Design of a Frequency-Tunable Frequency-Selective Surface with High-Selectivity

2020 ◽  
Author(s):  
Wenbo Zhao ◽  
Guangxu Qian ◽  
Tian Jiang ◽  
Ke Chen ◽  
Junming Zhao ◽  
...  
Keyword(s):  
High Selectivity ◽  
Frequency Selective Surface ◽  
Frequency Tunable ◽  
Frequency Selective ◽  
Tunable Frequency

scholarly journals Smart Cylindrical Dome Antenna Based on Active Frequency Selective Surface

2017 ◽  
Vol 2017 ◽  
pp. 1-14 ◽  
Author(s):  
Tongyu Ding ◽  
Shaoqing Zhang ◽  
Liang Zhang ◽  
Yanhui Liu
Keyword(s):  
Genetic Algorithm ◽  
Mutual Coupling ◽  
Angular Resolution ◽  
Frequency Selective Surface ◽  
High Gain ◽  
Omnidirectional Antenna ◽  
Tunable Range ◽  
Frequency Tunable ◽  
Frequency Selective ◽  
Analytical Synthesis

In this paper, we proposed a beamforming antenna, which is realized using an omnidirectional antenna in the center surrounded by a cylindrical smart dome. The smart dome is made of 16 active frequency selective surface columns of which the amplitude and phase response can be continuously tuned by varying the bias voltages of the employed varactors. Thus, the performance of the proposed antenna could achieve higher gain, better nulling level, and more agility than many switch methods-based cylindrical reconfigurable antennas. Moreover, in order to overcome the unavailable analytical synthesis caused by complex mutual coupling between columns, we develop a genetic algorithm based optimization system and conducted a serial of experiments to evaluate the high-gain, nulling, continuously steering, and frequency-invariant ability. The results show that, during the frequency tunable range of the AFSS (2.0 GHz to 2.7 GHz), the antenna can offer an additional gain of up to 6.57 dB and nulling level of −56.41 dBi. For the high-gain modes, the −3 dB beam widths are 26°–34°, which offers enhanced angular resolution compared with other reported beam-sweeping work. Furthermore, the radiation pattern is continuously steerable.

Dual-Band Band-Pass Frequency Selective Surface Based on the Matryoshka Geometry with Angular Stability and Polarization Independence

2020 ◽  
Author(s):  
Alfredo Gomes Neto ◽  
Jefferson Costa e Silva ◽  
Alexandre Jean Rene Serres ◽  
Marina de Oliveira Alencar ◽  
Ianes Barbosa Grecia Coutinho ◽  
...  
Keyword(s):  
Frequency Selective Surface ◽  
Angular Stability ◽  
Dual Band ◽  
Band Pass ◽  
Frequency Selective

A Novel Frequency Selective Surface Structure and Its Application to RCS Reduction of Antennas

2010 ◽  
Vol 2010 (1) ◽  
pp. 199-202
Author(s):  
Bao Lu ◽  
Shu-xi Gong ◽  
Jin Ling ◽  
wen-tao Wang
Keyword(s):  
Surface Structure ◽  
Frequency Selective Surface ◽  
Frequency Selective

A Polarization-Insensitive Miniaturized Element Frequency Selective Surface using Meander Lines

2018 ◽  
Author(s):  
A.B. Varuna ◽  
Saptarshi Ghosh ◽  
Harsh Sheokand ◽  
Kumar Vaibhav Srivastava
Keyword(s):  
Frequency Selective Surface ◽  
Polarization Insensitive ◽  
Frequency Selective ◽  
Meander Lines

A Hybrid Miniaturized-Element Frequency Selective Surface With a Third-Order Bandpass Response

2017 ◽  
Vol 16 ◽  
pp. 708-711 ◽  
Author(s):  
Meng Gao ◽  
Seyed Mohamad Amin Momeni Hasan Abadi ◽  
Nader Behdad
Keyword(s):  
Frequency Selective Surface ◽  
Third Order ◽  
Frequency Selective
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