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Evaluation of Transmission Characteristics of 120-GHz-Band Close-Proximity Wireless Links Using Split-Ring-Resonator Absorber Integrated Planar Slot Antenna

Akihiko HIRATA, Tubasa SAIJO, Yuma KAWAMOTO, Tadao NAGATSUMA, Issei WATANABE, Norihiko SEKINE, Akifumi KASAMATSU

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Summary :

We experimentally evaluated transmission characteristics of 120-GHz-band close-proximity wireless link that employs a split-ring resonator (SRR) millimeter-wave (MMW) absorber integrated on planar slot antennas in 120-GHz-band close-proximity wireless links. We fabricated the SRR MMW absorber made of a 0.28-μm-thick TaN film on a quartz substrate, and integrated it on planar single slot antennas. When the TaN SRRs are not integrated on the planar slot antennas, multiple reflections between the two antennas occur, and a >10-dB fluctuation of S21 at 100-140GHz is observed. When the TaN SRRs are integrated on the planar antennas, the fluctuation of S21 is suppressed to be 3.5dB at 100-140GHz. However, the transmittance of the close-proximity wireless link decreases by integrating TaN SRRs on the planar slot antenna because of reflection at the quartz substrate surface. The integration of the radiator that is composed of single SRR with two capacitors just above the slot antenna increased S21 by 3.5dB at 125GHz. We conducted a data transmission experiment over a close-proximity wireless link that employs radiator-and-TaN-SRR-integrated slot antennas for Tx and Rx, and succeeded to transmit 10-Gbit/s data over the close-proximity wireless link for the first time.

Publication
IEICE TRANSACTIONS on Electronics Vol.E106-C No.9 pp.458-465
Publication Date
2023/09/01
Publicized
2023/03/09
Online ISSN
1745-1353
DOI
10.1587/transele.2022ECP5065
Type of Manuscript
PAPER
Category
Microwaves, Millimeter-Waves

Authors

Akihiko HIRATA
  Chiba Institute of Technology
Tubasa SAIJO
  Osaka University
Yuma KAWAMOTO
  Osaka University
Tadao NAGATSUMA
  Osaka University
Issei WATANABE
  National Institute of Information and Communications Technology (NICT)
Norihiko SEKINE
  National Institute of Information and Communications Technology (NICT)
Akifumi KASAMATSU
  National Institute of Information and Communications Technology (NICT)

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