Abstract
A high-gain slotted waveguide antenna in substrate-integrated waveguide (SIW) configuration with enhanced bandwidth is proposed. Two different cases fabricated using Rogers RO 4003 substrate over a small area of 16 × 4.5 × 0.508 mm3 are discussed. SIW-based antenna having four longitudinally placed slots is studied with the help of simulation and experimental studies. Experimental results revealed that the proposed hourglass-shaped slot effectively enhanced the operation bandwidth without using additional complicated mechanisms. Improvement in bandwidth was achieved from the low-Q characteristics of the hourglass-shaped slots evidenced through the Z11 impedance analysis. The proposed hourglass-shaped slotted waveguide antenna exhibited 3.18% (37.09–38.29 GHz) impedance bandwidth with 5.8 dBi antenna gain at 38 GHz, where 1.08% bandwidth improvement was observed. Such low-profile planar structure resonating at mm-wave frequency band having high gain and improved bandwidth can be a suitable choice for integration with devices working in wireless network applications.
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Acknowledgements
This research was funded by the National Science and Technology Council, Taiwan, under Grants NSTC 112-2927-I-A49-503, NSTC 111-2634-F-A49-008, NSTC 111-2218-E-A49-021, NSTC 111-2221-E-A49-187, NSTC 111-2811-E-A49-529 and NSTC 111-2622-8-A49-018-SB. This work was also supported by the “Center for the Semiconductor Technology Research” from The Featured Areas Research Center Program within the framework of the Higher Education Sprout Project of the National Yang Ming Chiao Tung University and Ministry of Education (MOE), Taiwan.
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Desai, A., Tsao, YF. & Hsu, HT. High gain substrate integrated waveguide antenna with enhanced bandwidth for millimeter-wave wireless network applications. Wireless Netw 29, 2251–2260 (2023). https://doi.org/10.1007/s11276-023-03296-7
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DOI: https://doi.org/10.1007/s11276-023-03296-7