Lens and On-Chip Antenna Integration Challenges With 6G Sub-THz Radios
Leinonen, Marko E.; Rasilainen, Kimmo; Rimpiläinen, Anssi; Chen, Jiangcheng; Singh, Sumit Pratap; Nokandi, Mostafa Jafari; Rahkonen, Timo; Pärssinen, Aarno (2024-11-05)
IEEE
05.11.2024
M. E. Leinonen et al., "Lens and On-Chip Antenna Integration Challenges With 6G Sub-THz Radios," 2024 Smart Systems Integration Conference and Exhibition (SSI), Hamburg, Germany, 2024, pp. 1-6, doi: 10.1109/SSI63222.2024.10740515
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© 2024 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
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Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:oulu-202411066623
https://urn.fi/URN:NBN:fi:oulu-202411066623
Tiivistelmä
Abstract
The upcoming 6G extreme data rate networks will use high, sub-THz frequencies, such as the 300−GHz frequency band. To boost the radio signal coverage, directive antennas need to be used, which will narrow the radio beamwidth. Lens antennas are an excellent option for implementation because they offer a wide range of possible materials and scalability in antenna gain. Lens antennas can also provide additional capability for heat spreading, and the heat generation aspects of the 6G radios feeding the lens antennas are studied in this work based on a power consumption analysis of the state-of-the-art sub-THz power amplifiers. The main challenge in integrating lens antennas into mobile phones is their physical size, and the largest lens diameter that can be fitted into the modern flagship mobile phone is around 10 mm. An accurate alignment of the lens antenna and radio frequency integrated circuit (RFIC) is essential for optimizing the RF performance. Inexpensive methods for lens antenna verification are required, and this paper investigates a method based on the movement of the lens antenna over the measurement RFIC. A holder is used to move the lens antenna over the RFIC, and the peak antenna gain is measured. The measurement results of gain peak separations have an excellent match to the antenna separation implemented on the RFIC chip.
The upcoming 6G extreme data rate networks will use high, sub-THz frequencies, such as the 300−GHz frequency band. To boost the radio signal coverage, directive antennas need to be used, which will narrow the radio beamwidth. Lens antennas are an excellent option for implementation because they offer a wide range of possible materials and scalability in antenna gain. Lens antennas can also provide additional capability for heat spreading, and the heat generation aspects of the 6G radios feeding the lens antennas are studied in this work based on a power consumption analysis of the state-of-the-art sub-THz power amplifiers. The main challenge in integrating lens antennas into mobile phones is their physical size, and the largest lens diameter that can be fitted into the modern flagship mobile phone is around 10 mm. An accurate alignment of the lens antenna and radio frequency integrated circuit (RFIC) is essential for optimizing the RF performance. Inexpensive methods for lens antenna verification are required, and this paper investigates a method based on the movement of the lens antenna over the measurement RFIC. A holder is used to move the lens antenna over the RFIC, and the peak antenna gain is measured. The measurement results of gain peak separations have an excellent match to the antenna separation implemented on the RFIC chip.
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