A new concept of solar power satellite: Tethered-SPS

…, K Tanaka, K Higuchi, N Okuizumi, S Kawasaki… - Acta Astronautica, 2007 - Elsevier
Tethered solar power satellite (Tethered-SPS) consisting of a large panel with a capability
of power generation/transmission and a bus system which are connected by multi-wires is …

The ASTRO-H (Hitomi) x-ray astronomy satellite

…, N Kawai, T Kawano, S Kawasaki… - … 2016: Ultraviolet to …, 2016 - spiedigitallibrary.org
The Hitomi (ASTRO-H) mission is the sixth Japanese X-ray astronomy satellite developed
by a large international collaboration, including Japan, USA, Canada, and Europe. The …

The ASTRO-H X-ray astronomy satellite

…, N Kawai, T Kawano, S Kawasaki… - … 2014: Ultraviolet to …, 2014 - spiedigitallibrary.org
The joint JAXA/NASA ASTRO-H mission is the sixth in a series of highly successful X-ray
missions developed by the Institute of Space and Astronautical Science (ISAS), with a planned …

The ASTRO-H x-ray observatory

…, M Kawaharada, N Kawai, S Kawasaki… - … 2012: Ultraviolet to …, 2012 - spiedigitallibrary.org
The joint JAXA/NASA ASTRO-H mission is the sixth in a series of highly successful X-ray
missions initiated by the Institute of Space and Astronautical Science (ISAS). ASTRO-H will …

Continuously power delivering for passive backscatter wireless sensor networks

…, NB Carvalho, S Kawasaki - IEEE transactions on …, 2016 - ieeexplore.ieee.org
Nowadays wireless sensor networks (WSNs) depend on the battery duration and there is a
lot of interest in creating a passive sensor network scheme in the area of Internet of Things (…

Recent wireless power transmission technologies in Japan for space solar power station/satellite

N Shinohara, S Kawasaki - 2009 IEEE radio and wireless …, 2009 - ieeexplore.ieee.org
Wireless power transmission technology via microwave (microwave power transmission ;
MPT) was advanced from 1960's and many researchers which had a dream to realize the …

Quasi-optical planar arrays with FETs and slots

S Kawasaki, T Itoh - IEEE transactions on microwave theory …, 1993 - ieeexplore.ieee.org
This work describes the design concept and experimental results for prototypes of two-dimensional
quasi-optical power-combining arrays. Several different quasi-optical circuits were …

X-band, 15-W-class, highly efficient deep-space GaN SSPA for PROCYON mission

Y Kobayashi, S Kawasaki - IEEE Transactions on Aerospace …, 2016 - ieeexplore.ieee.org
An X-band, 15-W-class gallium nitride (GaN) solid-state power amplifier (SSPA) for the 50-kg-class
ultrasmall deep-space probe PROCYON has been demonstrated in deep space for …

Wide power range operable 3-stage S-band microwave rectifier with automatic selector based on input power level

…, S Tashiro, Y Kobayashi, S Kawasaki - 2013 IEEE MTT-S …, 2013 - ieeexplore.ieee.org
This research proposes a wide power range operable 3-stage microwave rectifier for microwave
wireless power transfer systems. The proposed rectifier is fabricated and measured at S-…

Wide dynamic range rectifier circuit with sequential power delivery technique

…, H Sakaki, K Nishikawa, S Kawasaki… - 2017 12th European …, 2017 - ieeexplore.ieee.org
This paper proposes and demonstrates a novel wide dynamic range rectifier. The proposed
rectifier consists of two rectifying circuits in parallel, an asymmetrical output impedance …