Conference Papers

Permanent URI for this collectionhttps://idr.nitk.ac.in/handle/123456789/28506

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Author: search.filters.author.Kandasamy, K.Subject: search.filters.subject.5G

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    A wideband dual polarized bow-tie antenna for 5G applications
    (Institute of Electrical and Electronics Engineers Inc., 2019) Bellary, B.; Kandasamy, K.; Rao, P.H.
    A wideband dual polarized bowtie antenna for 5G applications is presented. The dual polarization is achieved by using two different bow-tie antenna elements placed in orthogonal orientation. The design consists of rectangular slots on the two arms of bow-tie antennas which enhances the port to port isolation. The unidirectional radiation pattern is obtained by placing a perfect electric conductor (PEC) ground plane at λ/4 distance. The radiating elements are designed to operate at 3.5 GHz. Measured results of the proposed dual polarized bow-tie antenna exhibit a bandwidth of 42.85% (3.1 - 4.6 GHz) and 11.4% (3.3 - 3.7 GHz) for a VSWR of < 2 and 1.5 respectively. An isolation of 28dB between the two ports and an average gain of 8.4 dB is measured for both the polarizations. © 2019 IEEE.
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    Transmissive All-Dielectric Metasurface for Beam-Splitting in the Ka-band
    (Institute of Electrical and Electronics Engineers Inc., 2025) Koilkonda, N.; Goud, R.M.; Paul, P.; Kandasamy, K.
    This paper presents a systematic design methodology and full-wave electromagnetic analysis of a high-efficiency, all-dielectric metasurface engineered for beam-splitting applications within the Ka-band spectrum. The proposed structure consists of a 15×15 transmissive array of subwavelength dielectric unit cells, meticulously optimized for operation at 30 GHz. By offering a lightweight, low-profile alternative to conventional bulky beamforming architectures, the metasurface enables efficient angular beam separation, generating two distinct far-field radiation lobes with a 30° angular divergence. The unit cell configuration incorporates a cylindrical structure positioned atop an ABS plastic substrate, achieving a transmittance exceeding 85% at the design frequency. A continuous 360° phase modulation is realized through precise tuning of the cylinder's radius, facilitating accurate phase-front manipulation. The phase synthesis process is implemented using MATLAB, while full-wave electromagnetic validations are conducted in CST Studio Suite. The demonstrated results underscore the metasurface potential for advanced beam-control applications, making it a promising candidate for next-generation satellite communications, radar systems, and 5G/mm wave networks. © 2025 IEEE.