Faculty Publications

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Author: search.filters.author.Kandwal, A.

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    Compact bandpass filter based on hybrid spoof surface plasmon and substrate integrated waveguide transmission line
    (Institute of Electrical and Electronics Engineers Inc., 2017) Rudramuni, K.; Kandasamy, K.; Kandwal, A.; Zhang, Q.
    In this paper, spoof surface plasmon polariton (SSPPs) and substrate integrated waveguide (SIW) based bandpass filter is proposed. The metal strip on the top of the substrate is composed of periodic slots which supports surface wave mode of SPP within the closed substrate integrated waveguide. The dispersion relation of the proposed structure shows that it has both low-pass feature of SSP and the high-pass feature of SIW, and hence the combination of these two features leads to a bandpass filter (BPF). The results show that the passband is from 11.5-19 GHz with relative bandwidth of 49%. Bandwidth can be controlled by properly adjusting the parameters of the design. The proposed design features a compact size and easy fabrication, due to the integration of SPP in a closed SIW. © 2017 IEEE.
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    Goubau-Line Leaky-Wave Antenna for Wide-Angle Beam Scanning from Backfire to Endfire
    (Institute of Electrical and Electronics Engineers Inc., 2018) Rudramuni, R.; Kandasamy, K.; Zhang, Q.; Tang, X.-L.; Kandwal, A.; Tharehalli Rajanna, T.R.; Liu, H.
    A Goubau-line leaky-wave antenna (LWA) with a large scanning angle is presented in this letter. In contrast to the conventional Goubau-line leaky wave with a small scanning angle range, this letter employed a periodically bending Goubau line, which not only brings in a periodic perturbation for leaky-wave radiation, but also enhances the scanning range due to the increased delay for each line element. The simulation and experimental results show that the proposed LWA provides 90 radiation efficiency and 7-10 dBi radiation gain from backfire to endfire through broadside as frequency changes. The proposed antenna features good radiation performance and has a compact and low-profile configuration. © 2011 IEEE.