Enhanced static magnetic properties, multiresonance behaviour and novel frequency-selective surface absorption properties of hierarchical flower-like hexagonal close-packed Co superstructures

2012 ◽  
Vol 7 (5) ◽  
pp. 492 ◽  
Author(s):  
Guoxiu Tong ◽  
Jinhao Yuan ◽  
Wenhua Wu ◽  
Qinqin Zhang ◽  
Xi Cen ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Frequency Selective Surface ◽  
Surface Absorption ◽  
Absorption Properties ◽  
Hexagonal Close Packed ◽  
Frequency Selective

Optimize the Dielectric Slab of the Tunable Active Frequency Selective Surface Absorbing Material

2012 ◽  
Vol 534 ◽  
pp. 209-214 ◽  
Author(s):  
Qian Chen ◽  
Jian Jun Jiang ◽  
Xin Xin Xu ◽  
Biao Sun ◽  
Li Zhang ◽  
...  
Keyword(s):  
Frequency Selective Surface ◽  
Dielectric Slab ◽  
Optimum Thickness ◽  
Absorption Properties ◽  
Absorbing Material ◽  
New Type ◽  
Frequency Selective ◽  
Experimental Equation ◽  
Tunable Absorption ◽  
Selection Of

Active frequency selective surface (AFSS) absorber loaded with PIN diodes is a new type of structural absorber with tunable absorption properties. This absorber is similar to a sandwich, the surface is an AFSS, the middle is a dielectric slab, and the bottom is a metallic ground. In order to design and fabricate a thin and good performance absorber, the selection of dielectric slab is very important. In this paper, we detailed investigated the effects of the dielectric slab parameters (permittivity and thickness) to the absorption properties by experiments, and an experimental equation was proposed to provide a better description about their relationship. The measured results indicated there was an optimum thickness for the dielectric slab to produce the broadest bandwidth. The experimental equation was useful to optimize the design of the absorber.

scholarly journals A miniaturized frequency selective rasorber with high selectivity passband and wideband absorption properties

2021 ◽  
Vol 8 ◽  
pp. 5
Author(s):  
Yanjie Wu ◽  
Jie Xiong ◽  
Feng Deng ◽  
Hai Lin ◽  
You Wang
Keyword(s):  
Absorption Band ◽  
High Selectivity ◽  
Incident Angle ◽  
Frequency Selective Surface ◽  
Absorption Properties ◽  
Small Unit ◽  
Transmission Frequency ◽  
Structure Of Metal ◽  
Angle Stability ◽  
Frequency Selective

A miniaturized frequency selective rasorber (FSR) with high selectivity passband and wideband absorption properties is presented. Its performance as an absorber over a wide absorption band from 8.08 to 18.08 GHz through the structure of metal incurved square loop structure loaded resistors. The frequency selective surface (FSS) using Jerusalem cross array and metallic patch realizes the transmission frequency band from 2.7 to 3.52 GHz. And the insertion loss (IL) is 0.37 dB at 3.08 GHz. The symmetry and miniaturized elements design enable the proposed FSR to achieve satisfactory incident angle stability. Its small unit size effectively avoids the generation of grating lobes in the absorption band and the interference to Radar Cross Section (RCS) reduction.

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
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