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Committee Date Time Place Paper Title / Authors Abstract Paper #
AP 2022-02-18
Online Online [Invited Lecture] Cross-polarization reduction of a Ku-band phased array with a rotatable polarization plane
Makoto Sano, Koh Hashimoto, Kentaro Wada (Toshiba) AP2021-175
The authors have been developing a Ku-band phased array that can change the main-beam direction and the polarization pla... [more] AP2021-175
Online Online A 6-port power divider for the feeding of a compact dual linearly polarized patch antenna
Makoto Sano, Koh Hashimoto (Toshiba) AP2020-61
The isolation and the cross-polarization discrimination of a patch antenna can be enhanced by feeding the antenna differ... [more] AP2020-61
AP 2019-02-21
Osaka Sumitomo Electric Industries (Osaka Works) [Invited Lecture] Design of Parallel Plate Slot Array by Method of Moments Analysis Considering Higher Order Distribution of Equivalent Magnetic Current on Slot Aperture
Koh Hashimoto, Makoto Higaki (Toshiba) AP2018-170
Parallel plate slot array antennas are known for their high-gain and high-efficiency characteristics. A radiating slot p... [more] AP2018-170
AP 2017-08-24
Hokkaido National Institute of Technology, Hakodate College Stripline-Fed Patch Antenna with Long-Term Reliable Conductive Vias
Koh Hashimoto, Makoto Higaki (Toshiba) AP2017-73
In stripline-fed patch antennas built in multilayer substrate, the long-term reliability of through-holes used for suppr... [more] AP2017-73
AP 2009-04-09
Osaka Osaka Prefecture Univ. MoM analysis of a post-wall waveguide T-junction improving equivalent wall thickness in the PEC-wall model
Koh Hashimoto, Jiro Hirokawa, Makoto Ando (Tokyo Inst. of Tech.) AP2009-9
In analyses of post-wall waveguides, the post-walls are replaced by perfect electric conductor (PEC) walls which give th... [more] AP2009-9
AP 2009-01-23
Fukuoka Fukuoka University Reflection improvement of a center-feed post-wall waveguide circuit of T-junctions in a parallel-plate slot array antenna and sidelobe suppression by reduction of no slot area
Koh Hashimoto, Jiro Hirokawa, Makoto Ando (Tokyo tech.) AP2008-180
A center-feed waveguide consisting of T-junctions has been proposed to reduce the no-slot area of a post-wall waveguide ... [more] AP2008-180
AP 2006-09-07
Tokyo Ohhashi Kaikan (Ikejiri-Ohhashi, Tokyo) Parallel-plate slot array antenna using a center-feed post-wall waveguide consisting of pi-junctions
Koh Hashimoto, Jiro Hirokawa, Makoto Ando (Tokyo Tech.) AP2006-74
A center-feed structure developed for a single-layer waveguide slot array for reducing the long line effect is applied t... [more] AP2006-74
AP 2006-02-16
Kanagawa Toshiba Kenshuu Center(Yokohama) Post-Wall Waveguide Circuits for Center-Feed of Parallel Plate Slot Arrays
Koh Hashimoto, Takafumi Kai, Jiro Hirokawa, Makoto Ando (Tokyo tech.)
The center-feed structure using cross junctions for a single-layer slotted waveguide array for reducing the long line ef... [more] AP2005-161
 Results 1 - 8 of 8  /   
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