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- Title
Ultrathin design and implementation of planar and conformal polarisation rotating frequency selective surface based on SIW technology.
- Authors
Varikuntla, Krushna Kanth; Singaravelu, Raghavan
- Abstract
The design of novel ultra-thin polarisation rotating frequency selective surface based on substrate integrated waveguide (SIW) technology has been presented. The primary function of the structure is to select the linear polarisation from the impinging electromagnetic wave on it and to rotate the wave into the 90° counter-clockwise direction in the given frequency band. The proposed array consists of periodic Y-shaped slot elements surrounded by SIW cavities. The structure shows a relative bandwidth of 8% with impedance matching better than -10 dB and a very good insertion loss of 0.3 dB. It also offers co- polarisation below -20 dB in the passband. The proposed structure is very thin (0.055λ0) compared to the existing SIW-based frequency selective polarising rotators. Also, the conformal analysis of the proposed structure has been carried to study its behaviour for real-time applications when used on curved surfaces. Finally, to prove the efficacy of proposed structure, a prototype has fabricated and measured its performance. A very good agreement is observed between the experimental and simulated results.
- Subjects
SUBSTRATE integrated waveguides; POLARIZATION of electromagnetic waves; FREQUENCY selective surfaces; BANDWIDTHS; REFLECTANCE measurement
- Publication
IET Microwaves, Antennas & Propagation (Wiley-Blackwell), 2018, Vol 12, Issue 12, p1939
- ISSN
1751-8725
- Publication type
Article
- DOI
10.1049/iet-map.2017.0996