Search Results - "NAKAMIZO, Hideyuki"

Concurrent Multiband Digital Outphasing Transmitter Architecture Using Multidimensional Power Coding by Chung, SungWon, Ma, Rui, Shinjo, Shintaro, Nakamizo, Hideyuki, Parsons, Kieran, Teo, Koon Hoo

“…All-digital outphasing transmitter architecture using multidimensional power coding (MDPC) is proposed for noncontiguous concurrent multiband transmission with…”
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28GHz Active Phased Array Antenna Employing GaAs Frontend Module for Massive MIMO in 5G by Nakagawa, Junichi, Shinjo, Shintaro, Nakatani, Keigo, Nakamizo, Hideyuki, Noto, Hifumi, Tsutsumi, Koji, Watanabe, Hikaru, Sakai, Manabu, Iura, Hiroki, Iwayama, Naofumi

“…In 5G mobile communication systems, superb performances, namely large system capacity, low latency and massive connection are expected. A massive multiple…”
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A 28GHz-band highly integrated GaAs RF frontend Module for Massive MIMO in 5G by Shinjo, Shintaro, Nakatani, Keigo, Kamioka, Jun, Komaru, Ryota, Noto, Hifumi, Nakamizo, Hideyuki, Yamaguchi, Satoshi, Uchida, Shigeru, Okazaki, Akihiro, Yamanaka, Koji

“…The fifth generation mobile communications (5G) are expected to accommodate the forthcoming huge traffic demands, and the massive multiple input multiple…”
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An RF reference signal distribution system for suppressing phase fluctuations during transmission by Morita, Kae, Shimokawatoko, Jun, Wada, Osamu, Mizutani, Hiroyuki, Nakamizo, Hideyuki

“…In this paper, we propose a radio frequency (RF) reference signal distribution system with an analog phase shifter for suppressing the phase fluctuations…”
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A highly integrated RF frontend module including Doherty PA, LNA and switch for high SHF wide-band massive MIMO in 5G by Nakatani, Keigo, Komatsuzaki, Yuji, Shinjo, Shintaro, Kamioka, Jun, Komaru, Ryota, Nakamizo, Hideyuki, Miyawaki, Katsumi, Yamanaka, Koji

“…A highly integrated RF frontend module including a three-stage power amplifier (PA), a two-stage low noise amplifier (LNA) and a switch (SW) is presented for…”
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Linearity improvement method of fast-chirp signal for PLL by using frequency detector and division ratio modification by Wada, Osamu, Mizutani, Hiroyuki, Nakamizo, Hideyuki, Tajima, Kenichi

“…A linearity improvement method of a fast-chirp signal for a PLL by using a frequency detector and a division ratio modification is proposed. A fast-chirp…”
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A C - Ku-Band RF Module Transmitter Including an RF Signal Generator for a Flexible Phased-Array System by Kawakami, Kenji, Nakamizo, Hideyuki, Tajima, Kenichi, Taniguchi, Eiji, Akiyama, Tomohiro, Hieda, Morishige, Sakai, Kiyohide, Hayashi, Ryoji, Nakayama, Masatoshi, Hirano, Yoshihito, Chiba, Isam

“…This paper presents a new concept of an active phased array antenna (APAA) system with RF modules, including an RF signal generator. The proposed APAA realizes…”
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A 0.3-to-5.5 GHz Digital Frequency Discriminator IC with Time to Digital Converter by Hirai, Akihito, Tsutsumi, Koji, Nakamizo, Hideyuki, Taniguchi, Eiji

“…A 0.3 to 5.5 GHz range, 50ns-detection Digital Frequency Discriminator (DFD) using a Time to Digital Converter is presented. Wide frequency range and high…”
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Neural Network-based Common Digital Predistortion for Frequency Band-Dependent Nonlinearities of Wideband Power Amplifier by Yamashita, Ao, Sakaki, Hiroto, Nakamizo, Hideyuki

“…In this paper, we propose a neural network (NN)-based digital predistortion (DPD) to compensate for frequency band-dependent nonlinearities of a wideband power…”
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A [Formula Omitted]-[Formula Omitted]-Band RF Module Transmitter Including an RF Signal Generator for a Flexible Phased-Array System by Kawakami, Kenji, Nakamizo, Hideyuki, Tajima, Kenichi, Taniguchi, Eiji, Akiyama, Tomohiro, Hieda, Morishige, Sakai, Kiyohide, Hayashi, Ryoji, Nakayama, Masatoshi, Hirano, Yoshihito, Chiba, Isam

“…This paper presents a new concept of an active phased array antenna (APAA) system with RF modules, including an RF signal generator. The proposed APAA realizes…”
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A C—K u-Band RF Module Transmitter Including an RF Signal Generator for a Flexible Phased-Array System: SPECIAL ISSUE ON PHASED-ARRAY TECHNOLOGY by KAWAKAMI, Kenji, NAKAMIZO, Hideyuki, CHIBA, Isam, TAJIMA, Kenichi, TANIGUCHI, Eiji, AKIYAMA, Tomohiro, HIEDA, Morishige, SAKAI, Kiyohide, HAYASHI, Ryoji, NAKAYAMA, Masatoshi, HIRANO, Yoshihito

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Phase Control Method for Subsampling PLL by Varying Phase and Frequency of Clock Signal of S/H Circuit by Wada, Osamu, Mizutani, Hiroyuki, Nakamizo, Hideyuki

“…A phase control method for a subsampling phase locked loop (PLL) by varying the phase and frequency of the clock signal of a sample and hold (S/H) circuit is…”
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A flexible and precise APAA system with RF modules including a signal generator by Chiba, Isamu, Nakamizo, Hideyuki, Tajima, Kenichi, Akiyama, Tomohiro, Takahashi, Ryuhei, Taniguchi, Eiji, Kawakami, Kenji, Shimozawa, Mitsuhiro, Hieda, Morishige, Hayashi, Ryoji, Okamura, Atsushi, Nakayama, Masatoshi, Hirano, Yoshihito

“…We propose a new concept of an active phased array antenna (APAA) system that realizes multi-frequency and multi-modulation beam forming simultaneously in an…”
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An RF module including a signal generator for a flexible and accurate APAA by Nakamizo, Hideyuki, Tajima, Kenichi, Takahashi, Yoshinori, Owada, Tetsu, Taniguchi, Eiji, Kawakami, Kenji, Shimozawa, Mitsuhiro, Hieda, Morishige, Hayashi, Ryoji, Nakayama, Masatoshi, Hirano, Yoshihito, Chiba, Isamu

“…This paper presents an RF module including a signal generator for an APAA. By generating an RF signal independently in each module and sharing them among…”
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A Modular 1D-CNN Architecture for Real-time Digital Pre-distortion by De Silva, Udara, Koike-Akino, Toshiaki, Ma, Rui, Yamashita, Ao, Nakamizo, Hideyuki

“…This study reports a novel hardware-friendly modu-lar architecture for implementing one dimensional convolutional neural network (1D-CNN) digital predistortion…”
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A Modular 1D-CNN Architecture for Real-time Digital Pre-distortion by De Silva, Udara, Koike-Akino, Toshiaki, Ma, Rui, Yamashita, Ao, Nakamizo, Hideyuki

“…This study reports a novel hardware-friendly modular architecture for implementing one dimensional convolutional neural network (1D-CNN) digital predistortion…”
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Integrating the Front End: A Highly Integrated RF Front End for High-SHF Wide-Band Massive MIMO in 5G by Shinjo, Shintaro, Nakatani, Keigo, Tsutsumi, Koji, Nakamizo, Hideyuki

“…Fifth-generation (5G) mobile communications will need to accommodate huge traffic demands in the near future. Massive multipleinput/multiple-output (MIMO)…”
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Over 65% PAE GaN voltage-mode class d power amplifier for 465 MHz operation using bootstrap drive by Nakamizo, Hideyuki, Mukai, Kenji, Shinjo, Shintaro, Gheidi, Hamed, Asbeck, Peter

“…We report a digitally-driven switching-mode amplifier using GaN devices in Voltage-Mode Class D operation, for use at 465 MHz (the recently designated…”
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Development of active phased array antenna for high SHF wideband massive MIMO in 5G by Yamaguchi, Satoshi, Nakamizo, Hideyuki, Shinjo, Shintaro, Tsutsumi, Koji, Fukasawa, Toru, Miyashita, Hiroaki

“…In the 5th generation mobile communication system, large system capacity, low latency and massive connection will be provided for novel and various…”
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Antenna Pattern Evaluation of 28GHz band Massive MIMO Antenna RF Frontend Module for 5G by Kuriyama, Tasuku, Yoneda, Naofumi, Yamaguchi, Satoshi, Watanabe, Hikaru, Morishige, Hideki, Nakamizo, Hideyuki, Tsutsumi, Koji, Sakai, Manabu, Okazaki, Akihiro, Fukasawa, Toru

“…In the 5th generation mobile communication system, large system capacity, low latency and massive connection will be provided for novel and various…”
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