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Beam-scanning leaky-wave antenna based on CRLH-metamaterial for millimeter-wave applicationsAlibakhshikenari, M., Virdee, B.S., Khalily, M., Shukla, P., See, C.H., Abd-Alhameed, Raed, Falcone, F., Limiti, E. 06 March 2019 (has links)
Yes / This paper presents empirical results of an innovative beam scanning leaky-wave antenna (LWA) which enables scanning
over a wide angle from -35o to +34.5o between 57 GHz and 62 GHz, with broadside radiation centered at 60 GHz. The proposed LWA
design is based on composite right/left-handed transmission-line (CRLH-TL) concept. The single layer antenna structure includes a
matrix of 3×9 square slots that is printed on top of the dielectric substrate; and printed on the bottom ground-plane are Π and Tshaped
slots that enhance the impedance bandwidth and radiation properties of the antenna. The proposed antenna structure exhibits
metamaterial property. The slot matrix provides beam scanning as a function of frequency. Physical and electrical size of the antenna
is 18.7×6×1.6 mm3 and 3.43×1.1×0.29, respectively; where is free space wavelength at 55 GHz. The antenna has a measured
impedance bandwidth of 10 GHz (55 GHz to 65 GHz) or fractional bandwidth of 16.7%. Its optimum gain and efficiency are 7.8 dBi
and 84.2% at 62 GHz. / Partially supported by innovation programme under grant agreement H2020-MSCA-ITN-2016 SECRET- 722424 and the financial support from the UK Engineering and Physical Sciences Research Council (EPSRC) under grant EP/E022936/1.
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