Conference Papers

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

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Author: search.filters.author.Sharawi, M.S.

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    SRR loaded slot antenna for multiband applications
    (Institute of Electrical and Electronics Engineers Inc., 2017) Paul, P.M.; Kandasamy, K.; Sharawi, M.S.
    A compact square shaped microstrip triband slot antenna is proposed. Two Split Ring Resonators (SRR) of the same configuration are loaded at one edge of the slot in a back to back orientation. The other edge of the slot is displaced with two 180° rotated SRR's with multiple slits. The additional bands are obtained from the resonance properties of the loaded SRR's. The antenna is simulated and measured. The resonance frequencies obtained are 2.7 GHz, 4.3 GHz and 4.7 GHz. A minimum bandwidth of 130 MHz is achieved. © 2017 IEEE.
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    A Multi-Band SRR and Strip Loaded Slot Antenna
    (Institute of Electrical and Electronics Engineers Inc., 2018) Paul, P.M.; Kandasamy, K.; Sharawi, M.S.
    In this paper, a novel compact slot antenna suitable for penta-band applications is proposed. The different resonances are obtained by loading the slot on the top layer with an array of copper strips of equal length and with a Split Ring Resonator (SRR) at the bottom layer. The antenna prototype is fabricated and measured. The simulated and measured results are in good agreement. The antenna is found to resonate at frequencies of 1.51 GHz, 2.35 GHz, 2.9 GHz, 3.66 GHz and 5.6 GHz. Also, a gain higher that 2.4 dBi and a bandwidth of at least 80MHz are obtained for all the bands. © 2018 IEEE.
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    A Tri-Band SRR Loaded Half Slot Antenna with Wideband Properties
    (Institute of Electrical and Electronics Engineers Inc., 2018) Paul, P.M.; Kandasamy, K.; Sharawi, M.S.
    In this paper, a compact tri-band split ring resonator (SRR) loaded slot antenna is proposed which offers independent frequency tunability for operation at WLAN and WiMAX bands. The microstrip fed slot antenna is loaded with a modified SRR to obtain the triband resonance. The compactness is achieved by using an open slot antenna. The slot is designed to resonate at 2.4 GHz, which combines with the resonance obtained due to a fictitious short circuit produced at a certain point along the slot. This leads to the wideband property at the first band. The second and third resonances are obtained at 7.5 GHz and 9.3 GHz. The resonances can be independently controlled by changing the slot and SRR dimensions. © 2018 Radio Society.
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    A Corner Expanded CPW-Fed Slot Antenna with Circular Polarization Characteristics
    (Institute of Electrical and Electronics Engineers Inc., 2019) Paul, P.M.; Kandasamy, K.; Sharawi, M.S.
    A planar, slot-based, simple and circularly polarized (CP) antenna is presented in this work. It consists of a square shaped slot that is fed via a coplanar waveguide (CPW) 50-ohm feed. The CP slot operates at a center frequency of 2.5GHz. Here, the corners are modified by adding small symmetric rectangular slot extensions to produce CP based waves. The plots obtained on simulation and measurement of the fabricated prototype display commendable similarity between each other. Very wide axial ratio bandwidth (ARBW) of 35% along with a maximum gain of 3.5dBi at 2.5GHz were accomplished. © 2019 European Association on Antennas and Propagation.
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    A Copper Strip Array Loaded Multiband Square Slot Antenna
    (Institute of Electrical and Electronics Engineers Inc., 2020) Paul, P.; Kandasamy, K.; Sharawi, M.S.
    A simple copper strip array loaded multiband square slot antenna with microstrip line feed is proposed in this paper. The slot antenna is designed to radiate at 2.28 GHz. The slot is loaded with a uniform array of rectangular copper strips to produce other resonances at 2.2 GHz, 3.4 GHz, 4.6 GHz, 5.4 GHz, 6.6 GHz. The proposed antenna is modeled and simulated using HFSS. The antenna prototypes are fabricated and tested. Good agreement is obtained between the measured and simulated results. The surface current distributions at the various resonant frequencies are simulated. The principle of operation is explained based on the distributions obtained and using analytic equations. An equivalent circuit model is also studied. Impedance bandwidths of 500 MHz, 300 MHz, 600 MHz, 400 MHz, 600 MHz and a gain of above 3 dB is obtained at the five resonant frequencies. © 2020 EurAAP.