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Masatoshi Onizawa - IEEE Xplore Author Profile
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Masatoshi Onizawa

Also published under: M. Onizawa

Publications
14
Citations
34
Publications by Year
20022023
Co-Authors:
Show All Co-Authors (19)
Image of author Masatoshi Onizawa

Masatoshi Onizawa

Also published under: M. Onizawa

Affiliation

SEIKOH GIKEN Co.Ltd 296-1
Matsuhidai
Matsudo-City, Chiba, Japan

Publication Topics

Biography

Masatoshi Onizawa received the B.E. degree in electronic engineering from The University of Electro-Communications, Tokyo, Japan, in 2000. In 2000, he joined TOKIN Corporation, Shiroishi, Japan, where he was in the development of optical communication equipment for broadcasting. In 2006, he moved to SEIKOH GIKEN Company Ltd., Japan. He is currently engaged in radio-over-fiber equipment development and manufacturing.(Based on document published on 17 September 2021).
Publications
14
Citations
34
Publications by Year
20022023
Co-Authors:
Show All Co-Authors (19)
Author's Published Works

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28GHz-Band Antenna-Coupled Electrode Electro-Optic Modulator for Receiving Two Orthogonal Polarization Components Simultaneously

Shunsuke Nakamori;Yui Otagaki;Masahiro Sato;Masatoshi Onizawa;Satoru Kurokawa;Hiroshi Murata

2023 XXXVth General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS)
Year: 2023 | Conference Paper |
We have been studying an antenna-coupled electrode electro-optic (EO) modulator based on an antenna-coupled-electrode on LiNbO3-crystal. EO modulators are applicable as a passive wireless-optical signal converter with an integration of planar antenna and are expected to be a key device for the realization of “Massive Machine Type Communications” in Fifth-generation (5G) mobile communication system...Show More

28GHz-Band Antenna-Coupled Electrode Electro-Optic Modulator for Receiving Two Orthogonal Polarization Components Simultaneously

Shunsuke Nakamori;Yui Otagaki;Masahiro Sato;Masatoshi Onizawa;Satoru Kurokawa;Hiroshi Murata

Year: 2023 | Conference Paper |

All-Optical Fiber Link Antenna Measurement System using an Industrial Robot System

Satoru Kurokawa;Michitaka Ameya;Sayama Matsukawa;Masahiro Sato;Masatoshi Onizawa;Hiroshi Murata;Masanobu Hirose

2022 16th European Conference on Antennas and Propagation (EuCAP)
Year: 2022 | Conference Paper |
Cited by: Papers (1)
We have developed an all-optical fiber link antenna measurement system using an industrial robot system for 28 GHz band of 5th generation mobile communication. Our developed system consists of an optical fiber link microwave transmitting system, an antenna-coupled-electrode electric-field (EO) sensor system for 28 GHz-band as a microwave receiving system, and a 6-axis vertically articulated robot ...Show More

All-Optical Fiber Link Antenna Measurement System using an Industrial Robot System

Satoru Kurokawa;Michitaka Ameya;Sayama Matsukawa;Masahiro Sato;Masatoshi Onizawa;Hiroshi Murata;Masanobu Hirose

Year: 2022 | Conference Paper |

Antenna Factor Estimation for Electric-Field Sensor using an Amplitude Center Modified Friis Transmission Formular

Satoru Kurokawa;Sayaka Matsukawa;Michitaka Ameya;Masahiro Sato;Masatoshi Onizawa;Hiroshi Murata

2021 IEEE Conference on Antenna Measurements & Applications (CAMA)
Year: 2021 | Conference Paper |
Cited by: Papers (3)
We have estimated a far field antenna factor of an antenna-coupled-electrode electric-field sensor system for 28 GHz-band using an amplitude center modified Friis transmission formular. Estimated far field antenna factor of the sensor system is 70.25 dB/m at 28 GHz.Show More

Antenna Factor Estimation for Electric-Field Sensor using an Amplitude Center Modified Friis Transmission Formular

Satoru Kurokawa;Sayaka Matsukawa;Michitaka Ameya;Masahiro Sato;Masatoshi Onizawa;Hiroshi Murata

Year: 2021 | Conference Paper |

Linear-Polarized and Dual-Polarized Electric-field Sensor using LiNbO3 Phase Modulator for 28 GHz Band

Satoru Kurokawa;Michitaka Ameya;Sayaka Matsukawa;Masahiro Sato;Masatoshi Onizawa;Hiroshi Murata;Masanobu Hirose

2021 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications (APWC)
Year: 2021 | Conference Paper |
We have developed an antenna-coupled-electrode electric-field sensor for 28 GHz-band in 5th generation mobile communication as a receiving antenna [1] . In this paper, we report a 3D near field receiving pattern for the simultaneously-receiving dual-polarized type electric-field sensor and a linear-polarized type electric-field sensor that have 2 and 2by 2 array antennas respectively. The electric...Show More

Linear-Polarized and Dual-Polarized Electric-field Sensor using LiNbO3 Phase Modulator for 28 GHz Band

Satoru Kurokawa;Michitaka Ameya;Sayaka Matsukawa;Masahiro Sato;Masatoshi Onizawa;Hiroshi Murata;Masanobu Hirose

Year: 2021 | Conference Paper |

Antenna-Coupled Electrode Electro-Optic Modulator for 5G Mobile Applications

Hiroshi Murata;Hiroto Yokohashi;Sayaka Matsukawa;Masahiro Sato;Masatoshi Onizawa;Satoru Kurokawa

IEEE Journal of Microwaves
Year: 2021 | Volume: 1, Issue: 4 | Journal Article |
Cited by: Papers (19)
A new device for conversion from 5G mobile wireless signals to optical signals, which is suitable for a passive wireless receiver in uplinks of 5G mobile front-haul in dense user environments, and a 5G-band sensor for precise antenna measurement, has been developed utilizing an array of antenna-coupled electrodes integrated on a high-speed LiNbO3 electro-optic (EO) modulator. The 5G wireless signa...Show More

Antenna-Coupled Electrode Electro-Optic Modulator for 5G Mobile Applications

Hiroshi Murata;Hiroto Yokohashi;Sayaka Matsukawa;Masahiro Sato;Masatoshi Onizawa;Satoru Kurokawa

Year: 2021 | Volume: 1, Issue: 4 | Journal Article |

High Front-to-Back Ratio Dual-Polarized Antenna-Coupled Electrode Electro-Optic Modulator for 28 GHz Band Near Field Antenna Measurement

Satoru Kurokawa;Sayaka Matsukawa;Masahiro Sato;Masatoshi Onizawa;Hiroto Yokohashi;Hiroshi Murata;Masanobu Hirose

2021 15th European Conference on Antennas and Propagation (EuCAP)
Year: 2021 | Conference Paper |
Cited by: Papers (1)
We have developed a simultaneously receiving type dual (orthogonally) polarized antenna-coupled-electrode electro-optic (EO) modulator for 28 GHz-band 5th generation mobile communication as a receiving antenna. Our developed EO modulator can measure the orthogonally polarized microwave signal simultaneously. Cross-polarization discrimination ratio for E-plane of the EO modulator is more than 18 dB...Show More

High Front-to-Back Ratio Dual-Polarized Antenna-Coupled Electrode Electro-Optic Modulator for 28 GHz Band Near Field Antenna Measurement

Satoru Kurokawa;Sayaka Matsukawa;Masahiro Sato;Masatoshi Onizawa;Hiroto Yokohashi;Hiroshi Murata;Masanobu Hirose

Year: 2021 | Conference Paper |

High-Speed Data Transmission Using 28-GHz Antenna-Coupled Electrode Electro-Optic Modulators for 5G Mobile Systems

Hiroto Yokohashi;Sayaka Matsukawa;Masahiro Sato;Masatoshi Onizawa;Satoru Kurokawa;Hiroshi Murata

2020 International Topical Meeting on Microwave Photonics (MWP)
Year: 2020 | Conference Paper |
Cited by: Papers (3)
Antenna-coupled electrode electro-optic (EO) modulators operating in the 28 GHz band were analyzed, designed, and fabricated. The transmission of a Hi-Vision movie stream was demonstrated using the fabricated antenna-coupled electrode EO modulator. This devise is suitable for applications to 5G mobile wireless communication systems and precise antenna measurement systems.Show More

High-Speed Data Transmission Using 28-GHz Antenna-Coupled Electrode Electro-Optic Modulators for 5G Mobile Systems

Hiroto Yokohashi;Sayaka Matsukawa;Masahiro Sato;Masatoshi Onizawa;Satoru Kurokawa;Hiroshi Murata

Year: 2020 | Conference Paper |

Performance Evaluation for Bi-directional Optical Fiber Link Transceiver for Antenna Measurement From 1 to 6 GHz

Satoru Kurokawa;Masanobu Hirose;Yoshikazu Toba;Junichi Terakado;Masatoshi Onizawa;Jun Ichijo

2019 13th European Conference on Antennas and Propagation (EuCAP)
Year: 2019 | Conference Paper |
Cited by: Papers (1)
We have already developed an antenna measurement system using bi-directional radio over fiber transceiver system from 1 GHz to 6 GHz. Our proposed system consists of bi-directional optical fiber link transceiver with microwave directional coupler that can extend the port of vector network analyzer. Our proposed system can measure S-parameters in full 2-port calibration from 1 to 6 GHz with less th...Show More

Performance Evaluation for Bi-directional Optical Fiber Link Transceiver for Antenna Measurement From 1 to 6 GHz

Satoru Kurokawa;Masanobu Hirose;Yoshikazu Toba;Junichi Terakado;Masatoshi Onizawa;Jun Ichijo

Year: 2019 | Conference Paper |

Antenna Measurement System using Radio over Fiber Transceiver with Vector Network Analyzer up to 6 GHz

S. Kurokawa;M. Hirose;Y. Toba;J. Terakado;M. Onizawa;J. Ichijo

2018 International Symposium on Antennas and Propagation (ISAP)
Year: 2018 | Conference Paper |
We newly develop an antenna measurement system using radio over fiber transceivers with vector network analyzer. Our proposed system can extend the port of vector network analyzer using optical devices and optical fibers up to 6 GHz. Our proposed system can measure S-parameters in full 2port calibration from 1 to 6GHz with 60 dB dynamic range. In this paper, we show outline of our developed system...Show More

Antenna Measurement System using Radio over Fiber Transceiver with Vector Network Analyzer up to 6 GHz

S. Kurokawa;M. Hirose;Y. Toba;J. Terakado;M. Onizawa;J. Ichijo

Year: 2018 | Conference Paper |

Optical fiber link port extender for vector network analyzer

S. Kurokawa;M. Hirose;Y. Toba;M. Onizawa;J. Ichijo

2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS)
Year: 2017 | Conference Paper |
Cited by: Papers (2)
We have developed a microwave measurement system using optical fiber link transceivers for vector network analyzer (VNA). Our proposed system can extend the port of vector network analyzer using optical devices and optical fibers. Further, it can measure S-parameters in full 2-port calibration up to 4GHz. The dynamic range of S21 is found to be more than 100 dB using direct access port of VNA.Show More

Optical fiber link port extender for vector network analyzer

S. Kurokawa;M. Hirose;Y. Toba;M. Onizawa;J. Ichijo

Year: 2017 | Conference Paper |

Antenna gain estimation for a single antenna measurement using bi-directional optical fiber link transceiver

Satoru Kurokawa;Masanobu Hirose;Yoshikazu Toba;Masatoshi Onizawa;Jun Ichijo Instrumental

2016 IEEE Conference on Antenna Measurements & Applications (CAMA)
Year: 2016 | Conference Paper |
Cited by: Papers (2)
We have already propose a microwave measurement system using a bi-directional type optical fiber link transceiver. Our proposed system with a vector network analyzer can measure the reflection signal and transmitting signal of the microwave device after s-parameter calibration of the vector network analyzer. However, our previous proposed bi-directional type optical fiber link transceivers can mea...Show More

Antenna gain estimation for a single antenna measurement using bi-directional optical fiber link transceiver

Satoru Kurokawa;Masanobu Hirose;Yoshikazu Toba;Masatoshi Onizawa;Jun Ichijo Instrumental

Year: 2016 | Conference Paper |

Development of a microwave receiving and transmission system using an optical modulator

T. Yamashita;K. Haeiwa;T. Negishi;I. Murasaki;Y. Toba;M. Onizawa

2005 IEEE International Symposium on Circuits and Systems (ISCAS)
Year: 2005 | Conference Paper |
Cited by: Papers (1) | Patents (2)
This article describes the development and construction of an evolutional SHF band signal receiving and transmission system using an optical modulator that operates via a faint signal in the 3.4GHz band. The modulator is a LiNbO/sub 3/ optical modulator of Mach-Zehnder type, which can be used to modulate a light beam at 1.5 /spl mu/m with FM signals at 3.4GHz band and a voltage level of 60dB/spl m...Show More

Development of a microwave receiving and transmission system using an optical modulator

T. Yamashita;K. Haeiwa;T. Negishi;I. Murasaki;Y. Toba;M. Onizawa

Year: 2005 | Conference Paper |

Optical RF-TV signal sensing and transmission for terrestrial TV relaying stations

K. Haeiwa;T. Yamashita;Y. Takeuchi;Y. Toba;S. Torihata;M. Onizawa

Conference Record of the 2002 IEEE Industry Applications Conference. 37th IAS Annual Meeting (Cat. No.02CH37344)
Year: 2002 | Conference Paper |
Cited by: Patents (2)
An evolutional optical RF-TV signal sensing and transmitting facilities were constructed and employed for a new type of TV relaying station. A LiNbO/sub 3/ optical modulator of Mach-Zehnder type at 1.3 /spl mu/m, which was used to modulate a light beam at 1.3 /spl mu/m with digital terrestrial television (OFDM) signals at a 470 MHz through 770 MHz band with a power level of 36 dB /spl mu/V obtaine...Show More

Optical RF-TV signal sensing and transmission for terrestrial TV relaying stations

K. Haeiwa;T. Yamashita;Y. Takeuchi;Y. Toba;S. Torihata;M. Onizawa

Year: 2002 | Volume: 1 | Conference Paper |

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