TY - GEN
T1 - Millimeter-wave electro-optic modulator using stacked patch-antennas embedded with micrometer-gap for radio-over-fiber system
AU - Murata, Hiroshi
AU - Aya, Hironori
AU - Inoue, Toshiyuki
AU - Sanada, Atsushi
AU - Wijayanto, Yusuf Nur
AU - Kanno, Atsushi
AU - Kawanishi, Tetsuya
N1 - Funding Information:
This research results were achieved in part by the research project of “Radio technologies for 5G using Advanced Photonic Infrastructure for Dense user environments” (RAPID), the Commissioned Research of National Institute of Information and Communications Technology (NICT), Japan.
Publisher Copyright:
© 2017 European Microwave Association.
PY - 2017/12/19
Y1 - 2017/12/19
N2 - We propose a new wireless electro-optic (EO) modulator using multi-layered stacked patch-antennas with a narrow gap for radio-over-fiber systems. This device uses a structure of vertically stacked patch antennas like the Yagi-Uda antenna, with an EO crystal and a low-dielectric-constant material hybrid substrate. The electric field for optical modulation and the patch length are increased by using the multi-layered antenna stacked structure. Therefore, the conversion efficiency from wireless to optical signals can be improved. In the analysis by use of HFSS, the operational frequency was shifted to the higher region by 7 GHz, and the modulation efficiency improved by 3.2 dB with the double stacking structure. In the experiments, the improvement of the modulation efficiency by 3.0 dB was verified, and the measured frequency response and directivity were in good agreement with the designed ones. The conversion of wireless 60 GHz band signals with QPSK modulation and the transfer of the converted signal over 1 km long fiber were also demonstrated.
AB - We propose a new wireless electro-optic (EO) modulator using multi-layered stacked patch-antennas with a narrow gap for radio-over-fiber systems. This device uses a structure of vertically stacked patch antennas like the Yagi-Uda antenna, with an EO crystal and a low-dielectric-constant material hybrid substrate. The electric field for optical modulation and the patch length are increased by using the multi-layered antenna stacked structure. Therefore, the conversion efficiency from wireless to optical signals can be improved. In the analysis by use of HFSS, the operational frequency was shifted to the higher region by 7 GHz, and the modulation efficiency improved by 3.2 dB with the double stacking structure. In the experiments, the improvement of the modulation efficiency by 3.0 dB was verified, and the measured frequency response and directivity were in good agreement with the designed ones. The conversion of wireless 60 GHz band signals with QPSK modulation and the transfer of the converted signal over 1 km long fiber were also demonstrated.
KW - Electro-optic effect
KW - Optical modulator
KW - Planar antenna
KW - Radio over fiber
KW - Yagi-Uda antenna
UR - http://www.scopus.com/inward/record.url?scp=85046536630&partnerID=8YFLogxK
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U2 - 10.23919/EuMC.2017.8230926
DO - 10.23919/EuMC.2017.8230926
M3 - Conference contribution
AN - SCOPUS:85046536630
T3 - European Microwave Week 2017: "A Prime Year for a Prime Event", EuMW 2017 - Conference Proceedings; 47th European Microwave Conference, EuMC 2017
SP - 628
EP - 631
BT - European Microwave Week 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 47th European Microwave Conference, EuMC 2017
Y2 - 10 October 2017 through 12 October 2017
ER -