OTA measurement technique for sub-THz integrated lens antennas
Rasilainen, Kimmo; Leinonen, Marko E.; Nokandi, Mostafa Jafari; Chen, Jiangcheng; Nevala, Klaus; Rahkonen, Timo; Pärssinen, Aamo (2023-06-14)
K. Rasilainen et al., "OTA Measurement Technique for Sub-THz Integrated Lens Antennas," 2023 100th ARFTG Microwave Measurement Conference (ARFTG), Las Vegas, NV, USA, 2023, pp. 1-4, doi: 10.1109/ARFTG56062.2023.10148886.
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https://urn.fi/URN:NBN:fi-fe2023062057048
Tiivistelmä
Abstract
Moving to sub-THz frequencies introduces new challenges for wireless communications systems in terms of design, implementation, and testing. This paper presents a measurement technique for over-the-air (OTA) characterisation of sub-THz antennas at WR3.4 band (220‐330 GHz), and a silicon (Si) lens fed by an on-chip antenna is used as a test vehicle. In the proposed measurement technique, the received sub-THz AM-modulated test signal is downconverted to kHz-range using a square-law power detector. Measurements and simulations/calculations are used to compare several key antenna/link parameters. Agreement between the results is good, which shows that the proposed technique provides a good and less hardware-intensive alternative for sub-THz antenna measurements.
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