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Ali Malakooti – Bandwidth Enhancement of a Double-Element Vivaldi Antenna with Sum and Difference Radiation Patterns
October 12, 2018 @ 3:10 pm - 3:35 pm
ABSTRACT A two-port double-element Vivaldi antenna with enhanced bandwidth and two different radiation patterns in the E-plane is presented herein. The achieved bandwidth ranges from 2.6 GHz to 18 GHz, with a gain increasing from 7.3 dBi at 2.6 GHz up to 15.1 dBi at 18 GHz. The bandwidth extension is obtained in the base double-element Vivaldi antenna by reducing the distance between the two elements and elongating the inner flares, thus delaying the emergence of grating lobes. The mutual coupling level between the ports is further decreased by introducing two vertical metal slabs between the antenna elements.
Speaker Ali Malakooti started his Ph.D in September 2016 in the field of Multi-radiation pattern antennas. He was the recipient of the best student paper award in Asia-Pacific Conference on Antennas and Propagation (APCAP), Auckland, New Zealand in August 2018. He also served as a reviewer for some reputable journals including: IEEE Microwave and Wireless Component Letters, IET Microwave and Antennas Propagation Letters, and IET Electronics Letters.