What is it about?
This paper is about bandpass frequency selective surface using the slot four arms star geometry. An expression to calculate the resonance frequency is introduced, for which results with difference less than 6%, when compared to measured ones, were obtained. The polarization dependence was discussed and a model based on two independent equivalent structures was successfully presented. With the asymmetrical geometry, two bandpass bandwidths, separated by a notch band-rejection, were achieved, a suitable characteristic to avoid co-channel interferences. Furthermore, if an orthogonal polarization is applied, this notch band-rejection can be converted to a bandpass bandwidth, providing a polarization filter behavior. The geometry simplicity and observed frequency response make the proposed FSS potentially attractive for many telecommunication systems.
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Why is it important?
The slot four arms star, a new geometry for frequency selective surface is introduced with very interesting characteristics. With the asymmetrical geometry, two bandpass bandwidths, separated by a notch band-rejection, were achieved, a suitable characteristic to avoid co-channel interferences.
Perspectives
We wish that this paper be atractive to other research groups by the interesting frequency response characteristics, with potential applications to smart frequency selective surfaces.
Dr. Alfredo Gomes Neto
Federal Institute of Science and Technology
Read the Original
This page is a summary of: Bandpass frequency selective surface using asymmetrical slot four arms star geometry, Microwave and Optical Technology Letters, March 2016, Wiley,
DOI: 10.1002/mop.29747.
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