scholarly journals Influence of dielectric layers on performance of transmission mode frequency selective surface based linear to circular polarization transformers

2020 ◽  
Vol 62 (4) ◽  
pp. 1815-1823 ◽  
Author(s):  
Sarah Clendinning ◽  
Robert Cahill ◽  
Dmitry Zelenchuk ◽  
Vincent Fusco
Keyword(s):  
Circular Polarization ◽  
Frequency Selective Surface ◽  
Mode Frequency ◽  
Transmission Mode ◽  
Dielectric Layers ◽  
Frequency Selective

scholarly journals Circular Polarization Frequency Selective Surface Operating in Ku and Ka Band

2015 ◽  
Vol 63 (11) ◽  
pp. 5194-5197 ◽  
Author(s):  
Robert Orr ◽  
Vincent Fusco ◽  
Dmitry Zelenchuk ◽  
George Goussetis ◽  
Elena Saenz ◽  
...  
Keyword(s):  
Circular Polarization ◽  
Frequency Selective Surface ◽  
Ka Band ◽  
Frequency Selective

Design of a hybrid A-sandwich radome using a strongly coupled frequency selective surface element

2020 ◽  
Vol 12 (8) ◽  
pp. 738-748 ◽  
Author(s):  
Krushna Kanth Varikuntla ◽  
Raghavan Singaravelu
Keyword(s):  
Transmission Loss ◽  
Incidence Angle ◽  
Core Layer ◽  
Middle Layer ◽  
Frequency Selective Surface ◽  
Surface Element ◽  
Dielectric Parameters ◽  
Strongly Coupled ◽  
Dielectric Layers ◽  
Frequency Selective

AbstractThe airborne radomes have to cater superior electromagnetic (EM) performance with bandpass characteristics of stealth application. In this regard, a hybrid A-sandwich radome is proposed in this paper. The proposed radome consists of a novel strongly coupled frequency selective surface (FSS) core sandwiched between two dielectric layers (acts as skin) to form an A-sandwich structure. The dielectric layers are cascaded in such a way that the middle layer has less dielectric parameters than the skin dielectric. The core layer comprises a modified FSS array using strongly coupled FSS layers through a series of metallic vias. This strongly-coupled FSS element will have the advantage of eliminating inter-element interference and improves the EM performance characteristics of the structure. The structure exhibits very good band-pass characteristics (>90%) at a normal impinging angle with sharp roll-off characteristics. To show the efficacy of the proposed structure, the transmission loss has been compared with that of conventional A-sandwich radomes at 0°, 50° incidence angle for both TE and TM polarization. Conformal analysis of the unit cell has been carried out, and sector-wise thickness optimization was performed to analyze the structure for the conformal shaped radome application. Finally, a physical prototype has been fabricated and measured its scattering parameters, radiation characteristics in a fully shielded anechoic chamber. The results are encouraging and prove its suitability for radome application.

scholarly journals A Tri-band Second-order Frequency Selective Surface Designing and Analysis

2021 ◽  
Vol 275 ◽  
pp. 03084
Author(s):  
Gao Shan ◽  
ChunYan Gao ◽  
HongBin Pu ◽  
ChunLan Chen
Keyword(s):  
Frequency Selective Surface ◽  
Second Order ◽  
Dual Band ◽  
Microwave Filter ◽  
Band Frequency ◽  
Dielectric Layers ◽  
Band Pass ◽  
Frequency Selective ◽  
Band Separation ◽  
Excellent Stability

In this paper, inspired from the technique of patch–aperture–patch, a novel tri-band frequency selective surface with second-order band-pass response in each operation band is presented. The design is implemented by cascading a two-dimensional periodic array of three square loops and an array of wire grids. The proposed structure composed of three metal and two dielectric layers acts as a spatial dual band microwave filter with large band separation. The predicted FSS has the merits of broadband response, excellent stability for different incident angles, and sharp roll-off at X-, Ku- and K-band, respectively. The simulation and measurement are carried out and discussed. The measured results agree well with the simulated ones.

Sign in / Sign up

Export Citation Format

Share Document