K. Hirasawa

Engineering · Physical Sciences

16h-index980citations126works0.02yr avg
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Research Topics

Antenna Design and Analysis(80), Antenna Design and Optimization(51), Microwave Engineering and Waveguides(41), Advanced Antenna and Metasurface Technologies(31), Energy Harvesting in Wireless Networks(16)

Publications126 total

Radiation-tolerant polarized solid target
arXiv (Cornell University)·2025Open Access
Synthesis of Variable Gain Robust State Observer for a Class of Uncertain Nonlinear Systems
2024
Synthesis of Variable Gain Robust State Observer for a Class of Uncertain Nonlinear Systems
DETSOC Transactions on Industry Applications·2024
A multi-band planar antenna for biomedical applications
Frequenz·2021· 9 cited
A compact E-shaped antenna with C-shaped slots and a back-patch for multiband applications
Journal of Electrical Engineering·2020· 7 citedOpen Access
Analyzing the Physics of Radio Telescopes and Radio Astronomy
Advances in environmental engineering and green technologies book series·2020· 2 cited
Fundamentals of a Radio Telescope
Advances in environmental engineering and green technologies book series·2020· 2 cited
Introduction to Radio Astronomy and Radio Telescopes
Advances in environmental engineering and green technologies book series·2020· 2 cited
Efficiency Enhancement in a Wireless Power Transmission System Using Parasitic Components
IETE Journal of Research·2019· 2 cited
Introductory Chapter: Electromagnetism
IntechOpen eBooks·2019· 7 citedOpen Access
Electromagnetic Fields and Waves
IntechOpen eBooks·2019· 90 cited
Attenuation in Lossy Circular Waveguides
2019· 2 cited
The Light and the Shadow of Scattered Electromagnetic Waves
IEICE Technical Report; IEICE Tech. Rep.·2017
Proposal of multidirectional power transmission system using monopole antennas and parasitic elements
2017· 1 cited
Biologically-Inspired Wireless Power Transmission System
Advances in environmental engineering and green technologies book series·2016· 2 cited
Attenuation in Superconducting Rectangular Waveguides
Frequenz·2015· 7 cited
Linear Wire Antennas
2015· 8 cited
Uncertainty of the dipole antenna factor at an arbitrary height above a ground plane
IEICE Technical Report; IEICE Tech. Rep.·2014
Proper Antenna Factors for the Normalized Site Attenuation Above a Ground Plane
IEEE Transactions on Electromagnetic Compatibility·2014· 3 cited
Shortened dipole antenna factors by the reference antenna method at a finite separation
2013· 1 cited
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Frequent Co-authors

K. Fujimoto(6), Bradley J. Strait(6), Hisashi Morishita(5), Kim Ho Yeap(5), Song Shi(3), Takehiro Morioka(3), H. Kuboyama(3), Y. Ojiro(3), T. Nagao(2), Zhi Ning Chen(2), Ke Wu(2), Takefumi Hiraguri(2), Koon Chun Lai(2), T Takahashi(2), Takuya Hiraguri(2), Ki-Chai Kim(2), Makoto Sumi(1), Shoko Araki(1), Zhi Ning Chen(1), Kazuo Sato(1)