Myllymäki, S., M. Teirikangas, and M. Kokkonen. "BaSrTiO3 ceramic-polymer composite material lens antennas at 220–330 GHz telecommunication applications." Electronics Letters 56, no. 22 (2020): 1165-1167.
for full paper see https://digital-library.theiet.org/content/journals/10.1049/el.2020.1875
Abstract
Ceramic (Ba0.55Sr0.45Ti1.01O3) – polypropylene polymer ER182 composites-based materials were applied for sub-THz range antenna lens application in telecommunications. Typical plano-convex -shaped lenses were simulated and measured with a standard rectangular waveguide at 220–330 GHz frequency band and applied on 150 mm on-air distance. The lens fabricated with ER182 polymer material increased the signal strength by 15 dB, ER182/7 vol% BST by 6 dB and ER182/30 vol% BST by −23 dB. Material loss tangent values were 0.008 for ER182, 0.034 for ER182/7%BST and 0.081 for ER182/30%BST. The directivity of ER182 material lens and WR3 waveguide combination was 26 dBi at 300 GHz.
… The BST was selected as filler due to its high relative
permittivity with moderately low losses at high frequencies. The dielectric properties of the fabricated
material samples were measured with TeraView TPS Spectra 3000 THZ spectroscopy
equipment …
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