BaSrTiO ₃ ceramic‐polymer composite material lens antennas at 220–330 GHz telecommunication applications

Abstract

Ceramic (Ba0.55 Sr0.45 Ti1.01 O3 ) – 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.

A Sensing Demonstration of a Sub THZ Radio Link Incorporating a Lens Antenna

“…Two low loss, low permittivity materials were chosen for the fabrication of the lenses. An LMO-HGMS ceramic composite that can be fabricated at room temperature and molded into a lens by a molding process (the recipe for the LMO-HGMS have been previously published [17]) and polypropylene polymer (ER182) that was hot-pressed into a lens shape [18]. The dielectrical properties of the used materials are listed in Table 1.…”

Wood-based composite materials for ultralight lens antennas in 6G systems

“…One of the radio frequency (RF) components that 𝑡𝑎𝑛𝛿 benefits from new materials is the RF lens used as in optics to focus the radiation thus increasing the antenna gain. 2 RF lenses are commonly made from materials such as high resistivity silicon ( ~11.9) [3][4][5] and polymers 𝜀 𝑟 ( ~2.3) 3,[6][7][8] . The use of materials with low and low allows higher signal speeds and improved 𝜀 𝑟 ε 𝑟 𝑡𝑎𝑛δ efficiency.…”

“…2 RF lenses are commonly made from materials such as high resistivity silicon (e r B 11.9) [3][4][5] and polymers (e r B 2.3). 3,[6][7][8] The use of materials with low e r and low tan d allows higher signal speeds and improved efficiency. 9 However, polymers and silicon are heavy materials that in turn increase the relative weight of the lens compared to the highly integrated RF electronics.…”

Lens antenna adjustment for telecommunication and imaging modes in a sub‐THz radio system

“…Several research works have been focused on dielectric lens antenna modification [1][2][3][4] and circuit components. 5 Elliptical lens geometry could contribute to the gain of 36.5 dB for 110 GHz, 4 and hyperbolic horn lens model aimed by metal guide feeder could perform gain 39 dB at frequency 240 GHz, 3 respectively.…”