Lossless Matching Layer for Silicon Lens Arrays At 500 GHz Using Laser Ablated Structures
Bueno Lopez, J. (TU Delft Electronics)
Bosma, S. (TU Delft Tera-Hertz Sensing)
Bußkamp-Alda, Tobias (Veld Laser Innovations B.V.)
Alonso Del Pino, M. (TU Delft Tera-Hertz Sensing)
Llombart, Nuria (TU Delft Tera-Hertz Sensing)
We present the design, fabrication and characterization of a broadband lossless matching layer for silicon lens arrays. The proposed matching layer is based on silicon frusta (truncated pyramids) on top of the lens array fabricated by means of laser ablation. This matching layer is advantageous over quarter-wavelength dielectric matching layers since it covers more than an octave of bandwidth. We compare the performance of this matching layer with the commonly-used parylene-C matching layer at the center of the targetted band (500 GHz) in a lens-antenna integrated system. We measure a 1.6 dB higher transmission of the proposed silicon frusta matching compared to the parylene-C matching layer.
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dielectric lens antennas
IEEE Transactions on Terahertz Science and Technology, 12 (6), 667 - 672
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© 2022 J. Bueno Lopez, S. Bosma, Tobias Bußkamp-Alda, M. Alonso Del Pino, Nuria Llombart