Azimuthally periodic wedge-shaped metal vane loaded circular ring frequency selective surface

2014 ◽  
Vol 7 (1) ◽  
pp. 95-106 ◽  
Author(s):  
Garima Bharti ◽  
Kumud Ranjan Jha ◽  
Ghanshyam Singh ◽  
Rajeev Jyoti
Keyword(s):  
Satellite Communication ◽  
Structural Parameters ◽  
Frequency Selective Surface ◽  
Circular Ring ◽  
Electrical Performance ◽  
Electromagnetic Spectrum ◽  
Method Of Moment ◽  
Reflection And Transmission ◽  
Synthesis Technique ◽  
Frequency Selective

In this paper, the analysis and simulation of a novel geometrical structure of the frequency selective surface (FSS), which has been achieved through the conductive loading of the simple circular ring with wedge-shaped metal vanes has been discussed. The electrical performance and behavior of the proposed structure have been studied in Ku band (12–18 GHz) of the electromagnetic spectrum for satellite communication. We have radially optimized the proposed structure to enhance the performance, such as reflection and transmission bandwidth. We have also discussed the effect of incident electric field at 0°, 10°, 30°, and 50° on the electrical performance of the proposed FSS. In addition to this, the effect of angular sensitivity on the proposed structure through increasing the number of conductive loaded wedge-shaped metal vanes is also explored. However, the structural parameters of the proposed FSS have been obtained through the synthesis technique. The analytical results obtained from the synthesis technique have been supported by the simulation results achieved through CST Microwave Studio as well as Ansoft high frequency structural simulator (HFSS), which are commercially available simulators based on the finite integral and finite-element technique, respectively. Furthermore, for validation of the numerical results, the Ansoft circuit simulator which is based on mixed potential integral equations (MPIE) and solved by the method-of-moment has also been used to obtain the reflection and transmission parameters through the values of inductance and capacitance, which have been achieved by the numerical analysis.

Design of angular and polarization stable modified circular ring frequency selective surface for satellite communication system

2015 ◽  
Vol 8 (6) ◽  
pp. 899-907 ◽  
Author(s):  
Garima Bharti ◽  
Kumud Ranjan Jha ◽  
Ghanshyam Singh ◽  
Rajeev Jyoti
Keyword(s):  
Satellite Communication ◽  
Three Dimensional ◽  
Frequency Selective Surface ◽  
Circular Ring ◽  
System Level ◽  
Geometrical Parameters ◽  
Small Unit ◽  
Transmission Coefficients ◽  
Synthesis Technique ◽  
Frequency Selective

In this paper, a simple synthesis technique to obtain the geometrical parameters of the modified circular ring for angular and polarizations (perpendicular and parallel) stable frequency selective surface (FSS) has been discussed. The geometrical parameters of the modified circular ring FSS structure have been achieved using the proposed synthesis technique, which is based on the equivalent circuit (EC) approach. In addition to this, the numerical analysis is also discussed to determine the values of EC parameters, which depends on the basic system level characteristics such as frequency of operation and reflection/transmission coefficients. The analytical results are supported using the full-wave three-dimensional electromagnetic (EM) simulators such as CST Microwave Studio and Ansoft HFSS. The sensitivity of the structure to the perpendicular and parallel polarized EM wave up to 50° angle-of-incidences (AOIs) has been discussed. The stability over different AOI is attributed to the appropriate thickness of the structure with its small unit-cell dimensions. We have also fabricated and experimentally tested the proposed FSS structure.

scholarly journals Development of Method of Moment Based Programme to Analyze Cross Dipole Frequency Selective Surface and its Verification with Measured Results

2020 ◽  
Vol 9 (8) ◽  
pp. 1019-1023
Keyword(s):  
Theoretical Analysis ◽  
Satellite Communication ◽  
Test Bench ◽  
Frequency Selective Surface ◽  
Experimental Results ◽  
Experimental Result ◽  
Method Of Moment ◽  
Frequency Selective ◽  
Matlab Programming

Theoretical analysis of frequency selective surface comprising of cross dipole elements has been presented in this paper. Algorithm for theoretical analysis based on method of moment has been implemented by MATLAB programming. Theoretical, simulated and experimental results are compared. Simulated result is obtained by ANSOFT designer version 2.2 software. Experimental result is obtained by standard microwave test bench. Good parity in the results is observed. The presented FSS Structure has relevance in the field of mobile and satellite communication.

Design and analysis of a tri-band frequency selective surface with a second-order response

2019 ◽  
Vol 12 (3) ◽  
pp. 205-211
Author(s):  
Chunyan Gao ◽  
Hongbin Pu ◽  
Shan Gao ◽  
Chunlan Chen ◽  
Yong Yang
Keyword(s):  
Satellite Communication ◽  
Equivalent Circuit Model ◽  
Design Procedure ◽  
Frequency Selective Surface ◽  
Flat Band ◽  
Pass Band ◽  
Band Frequency ◽  
Transmission Zeros ◽  
Frequency Selective ◽  
Sharp Rejection

AbstractIn this paper, a sandwiched type frequency selective surface (FSS) is designed and analyzed. The design procedure and operating principle is given based on the equivalent circuit model. The proposed FSS includes two identical layers of periodic metallic arrays, which are separated by a foam layer. In each layer of the periodic array, the unit cell is composed of a gridded-triple square loop structure. The FSS provides three pass-bands, in which a flat band response is presented. Three bands are separated by one or two transmission zeros, which leads to a sharp rejection on both sides of each pass-band. The central frequencies of the three pass-bands are 7.0, 10.9 and 14.0 GHz. To verify the simulated results, a prototype of the FSS is fabricated and measured. The simulated results agree well with the measured ones. This work can be used in area of a radar stealth or satellite communication system.

Study on Analysis and Simulation of Novel Frequency Selective Surfaces

2014 ◽  
Vol 1049-1050 ◽  
pp. 790-793
Author(s):  
Yan Xin Yu ◽  
Chun Yang Wang ◽  
Yan Jun Sun ◽  
Wen Ting Jiang
Keyword(s):  
Surface Film ◽  
Simulation Method ◽  
Frequency Selective Surface ◽  
Total Reflection ◽  
Frequency Selective Surfaces ◽  
The Finite Element Method ◽  
Reflection And Transmission ◽  
Unit Structure ◽  
Ansoft Hfss ◽  
Frequency Selective

Frequency selective surface (FSS) is a two-dimensional periodic structure. It exhibits total reflection and transmission in the neighborhood of the element resonances. As it performs as a filter, FSS is widely used in the fields of microwave and optics. In this paper, the finite element method is used to analysis frequency selective surface and study on the feasibility of Ansoft HFSS software for frequency selective surface simulation. Hexagonal element of frequency selective surface is as an example to explore the simulation method and the process of Ansoft HFSS. Through the comparison of the simulation curves and the measured curves of hexagonal element frequency selective surface film by photoetching technology, the simulation method of Ansoft HFSS software for frequency selective surface is correct. At the same time, this paper further verified the reliability of the simulation through the example of the ring and the cross unit structure.

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