K
Koji Takinami
Researcher at Panasonic
Publications - 91
Citations - 1668
Koji Takinami is an academic researcher from Panasonic. The author has contributed to research in topics: Phase-locked loop & Signal. The author has an hindex of 18, co-authored 89 publications receiving 1549 citations. Previous affiliations of Koji Takinami include Tokyo Institute of Technology.
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Patent
High-efficiency envelope tracking systems and methods for radio frequency power amplifiers
TL;DR: In this article, an envelope tracking (ET) method for controlling the delivery of power to radio frequency power amplifiers (RFPAs) is described. But the system is not suitable for the use of a power amplifier.
Journal ArticleDOI
A fully integrated 60GHz CMOS transceiver chipset based on WiGig/IEEE802.11ad with built-in self calibration for mobile applications
Noriaki Saito,Takayuki Tsukizawa,Naganori Shirakata,Tadashi Morita,Koichiro Tanaka,Junji Sato,Yohei Morishita,Masaki Kanemaru,Ryo Kitamura,Shima Takahiro,Toshifumi Nakatani,Kenji Miyanaga,Tomoya Urushihara,Hiroyuki Yoshikawa,Takenori Sakamoto,Hiroyuki Motozuka,Yoshinori Shirakawa,Naoya Yosoku,Akira Yamamoto,Ryosuke Shiozaki,Koji Takinami +20 more
TL;DR: The proposed techniques relax the requirement for high speed analog circuits, leading to less power consumption while minimizing the increase of hardware size.
Patent
Multi-mode transmitter having adaptive operating mode control
TL;DR: In this article, a multi-mode transmitter that is configurable to operate in a plurality of operating modes (e.g., a polar mode, a quadrature mode and a hybrid mode), a receiver, and an operating mode controller is presented.
Journal ArticleDOI
Where, When, and How mmWave is Used in 5G and Beyond
Kei Sakaguchi,Kei Sakaguchi,Thomas Haustein,Sergio Barbarossa,Emilio Calvanese Strinati,Antonio Clemente,Giuseppe Destino,Aarno Parssinen,Ilgyu Kim,Heesang Chung,Junhyeong Kim,Wilhelm Keusgen,Richard J. Weiler,Koji Takinami,Elena Ceci,Ali S. Sadri,Liang Xian,Alexander Maltsev,Gia Khanh Tran,Hiroaki Ogawa,Kim Mahler,Robert W. Heath +21 more
TL;DR: In this article, the authors give four 5G mmWave deployment examples and describe in chronological order the scenarios and use cases of their probable deployment, including expected system architectures and hardware prototypes.
Journal ArticleDOI
Millimeter-Wave Evolution for 5G Cellular Networks
Kei Sakaguchi,Gia Khanh Tran,Hidekazu Shimodaira,Shinobu Nanba,Toshiaki Sakurai,Koji Takinami,Isabelle Siaud,Emilio Calvanese Strinati,Antonio Capone,Ingolf Karls,Reza Arefi,Thomas Haustein +11 more
TL;DR: In this article, the authors proposed a comprehensive architecture of cellular networks with mmWave access, where mm-wave small cell basestations and a conventional macro basestation are connected to Centralized-RAN to effectively operate the system by enabling power efficient seamless handover as well as centralized resource control including dynamic cell structuring.