Design of a Lens Based Quasi-Optical System with 26x26 Scanned Beams for Wireless Communication Links at 300GHz
A. Bechrakis Triantafyllos (TU Delft - Tera-Hertz Sensing)
H. Zhang (TU Delft - Tera-Hertz Sensing)
M. Alonso Del Pino (TU Delft - Tera-Hertz Sensing)
Nuria Llombart (TU Delft - Tera-Hertz Sensing)
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Abstract
This work presents a multi lens Quasi-Optical (QO) antenna for energy efficient backhaul/fronthaul links at 300GHz. By operating in the radiative near-field region, the proposed antenna system achieves power spreading loss of only 1dB for a point-to-point (PtP) link of 100m. The simulated antenna directivity is 62dBi and the half-power beamwidth is 0.15 degrees. To satisfy the tight alignment requirements of the envisioned scenario, scanning capability is included through the rotation of a lightweight free-standing silicon (Si) lens. This allows correction for misalignment of ± 2 degrees (or ± 13 beams) with a penalty of 1.8dB in the link’s performance.
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