Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Yuuichi Aoki"'
Autor:
Yuuichi Aoki, Yonghoon Kim, Yongan Hwang, Heedo Kang, Sunryoul Kim, An-Sang Ryu, Manh Tuan Dao, Kihong Min, Daehyun Kang, Donggyu Minn, Hyun-Chul Park, Sehyug Jeon, Sung-Gi Yang
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 71:263-273
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b72f8708e00fe6706dd22603b5b28670
https://doi.org/10.1109/tmtt.2022.3228919
https://doi.org/10.1109/tmtt.2022.3228919
Publikováno v:
IEEE Microwave and Wireless Components Letters. 31:798-801
This letter presents the phased-array antenna calibration of the 5G millimeter-wave base station (BS). BS and the instrument are not synchronized with the common 10-MHz reference considering the actual factory calibration scenario. With the proposed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::31f4189836d428c34d987378d17251c1
https://doi.org/10.1109/lmwc.2021.3058955
https://doi.org/10.1109/lmwc.2021.3058955
Autor:
Yuuichi Aoki, Yonghoon Kim, Yongan Hwang, Heedo Kang, Sunryoul Kim, An-Sang Ryu, Sung-Gi Yang
Publikováno v:
2022 IEEE/MTT-S International Microwave Symposium - IMS 2022.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b650980402fee65fd7e84c0ab1729a46
https://doi.org/10.1109/ims37962.2022.9865512
https://doi.org/10.1109/ims37962.2022.9865512
Autor:
Manh Tuan Dao, Daehyun Kang, Yongan Hwang, Heedo Kang, Hyun-Chul Park, An-Sang Ryu, Sung-Gi Yang, Yong-Hoon Kim, Yuuichi Aoki, Sunryoul Kim, D. Minn, Sehyug Jeon
Publikováno v:
2020 IEEE Radio Frequency Integrated Circuits Symposium (RFIC).
A novel built-in phased-array calibration method for multi-stream 5G transceiver is presented. A transmit signal is monitored using couplers and sent to the receiver for the other stream. Multiple antenna elements are characterized simultaneously by
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::83a2f39139e23a4883ec920d00099c73
https://doi.org/10.1109/rfic49505.2020.9218341
https://doi.org/10.1109/rfic49505.2020.9218341
Autor:
Yuuichi Aoki, Yukihiko Okumura, Satoshi Suyama, Tatsuki Okuyama, Yuki Inoue, Tatsunori Obara, Jae-kon Lee
Publikováno v:
IEICE Transactions on Communications. :1256-1268
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f551623909438d613d729b1d5f8fc1f7
https://doi.org/10.1587/transcom.2016fgp0020
https://doi.org/10.1587/transcom.2016fgp0020
Publikováno v:
2019 IEEE MTT-S International Microwave Symposium (IMS).
This paper presents a frequency-dependent in-phase and quadrature-phase (IQ) imbalance calibration technique for ultra-wide bandwidth 5G millimeter-wave communication chipsets. Using a multi-tone training signal and a phase shifter inserted in the tr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::acec93a9d6b3a9652fb06c5ffe97b851
https://doi.org/10.1109/mwsym.2019.8700941
https://doi.org/10.1109/mwsym.2019.8700941
Publikováno v:
PIMRC
This paper presents some results of experimental trial in high mobility environment for the 5th generation (5G) mobile communication systems using 28 GHz band. In order to tackle rapidly increasing traffic for 2020 and beyond, new radio access networ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::818da9e1f83af1d48cd781792a87b215
https://doi.org/10.1109/pimrc.2016.7794690
https://doi.org/10.1109/pimrc.2016.7794690
Publikováno v:
2016 10th European Conference on Antennas and Propagation (EuCAP).
This paper presents the utilization of the ADS Ptolemy system simulator for RF circuits and a ray tracing simulator for antenna and propagation, to compare performance of a given mmWave beamforming system of 28 GHz frequency band, 800 MHz bandwidth w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12370ed4b88c97f4717111a56e7ef3ea
https://doi.org/10.1109/eucap.2016.7482003
https://doi.org/10.1109/eucap.2016.7482003
Publikováno v:
JSAE Review. 24:277-281
A new type DL pulley for the continuous variable displacement compressor has been developed. This technology was achieved by special metal and special limiter shape. As a result, it has achieved various superior characteristics, such as accurate limi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::eb5925250e6c3bf21d70c872b7bf4428
https://doi.org/10.1016/s0389-4304(03)00049-3
https://doi.org/10.1016/s0389-4304(03)00049-3
Publikováno v:
The proceedings of the JSME annual meeting. :471-472
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1950de1cfbfcfe40f810eb9597018eb4
https://doi.org/10.1299/jsmemecjo.2004.1.0_471
https://doi.org/10.1299/jsmemecjo.2004.1.0_471