Hirokawa Jiro

发表

Non-contact wave feed with the choke-flange waveguide at the development section of the Expansion Antenna for small satellite

Saito Hirobumi, Naruse Ryohei, Hirokawa Jiro, 2014 .

Basic configuration and performance of massive MIMO testbed at 19 GHz band

Hiraguri Takefumi, Nishimori Kentaro, Hirokawa Jiro, 2018 .

Influence and De-Embedding of SMA Connectors in Microwave Measurements

Ando Makoto, Hirokawa Jiro, Hirano Takuichi, 2014 .

Technical Challenges to Realize mmWave based 5G Cellular Networks

Sakaguchi Kei, Chang Yuyuan, Fukawa Kazuhiko, 2016 .

5G from Tokyo Institute of Technology Point of View -- For Realization of Millimeter-wave Heterogeneous Networks

Sakaguchi Kei, Chang Yuyuan, Fukawa Kazuhiko, 2015 .

Experimental results on massive MIMO at 19GHz band in actual indoor environment

Hiraguri Takefumi, Nishimori Kentaro, Hirokawa Jiro, 2018 .

Implementation of multi-beam massive MIMO with overhead-less access control

Hiraguri Takefumi, Nishimori Kentaro, Hirokawa Jiro, 2018 .

Prototype of 3-Gb/s 60-GHz Millimeter-wave-based Wireless File-transfer System

Ando Makoto, Hirokawa Jiro, Okada Kenichi, 2015 .

Massive MIMO transmission with analog multi-beam forming and blind algorithm

Seki Tomohiro, Hiraguri Takefumi, Nishimori Kentaro, 2016 .

Signal Transfer function for Short Range Wireless Communication with Multiple Reflection between Tx and Rx Antennas

Ando Makoto, Araki Kiyomichi, Hirokawa Jiro, 2016 .

Feasibility of Perpendicular-Corporate Feed for a Multi-Layered Parallel-Plate Slot Array Antenna

Hirokawa Jiro, Irie Hisanori, 2016 .

Education Material of Electricity and Magnetism using MATLAB

Hirokawa Jiro, Hirano Takuichi, 2016 .

Evaluation of Computational Cost for Electromagnetic Simulators

Ando Makoto, Hirokawa Jiro, Hirano Takuichi, 2013 .

Propagation Environment Control by Drone MIMO Relay Station with LOS-MIMO Transmission and Millimeter Wave

Hiraguri Takefumi, Nishimori Kentaro, Hirokawa Jiro, 2019 .

Multi-beam massive MIMO without CSI estimation

Nishimori Kentaro, Hirokawa Jiro, Hiraguri Takefumu, 2018 .

Proximity wireless data transmission characteristics using planar slot array antenna

Hirokawa Jiro, Nagatsuma Tadao, Hirata Akihiko, 2018 .

LOS-MIMO antenna array configuration independent of transmit distance

Hiraguri Takefumi, Nishimori Kentaro, Hirokawa Jiro, 2019 .

Cost-effective Surface-mount Antenna-package for High-speed Wireless File-transfer System in 60 GHz band

Ando Makoto, Suga Ryosuke, Hirokawa Jiro, 2011 .

Study of Reception Zone in a Millimeter Wave Compact-Range Wireless Access System Using a Large Array Antenna

Ando Makoto, Araki Kiyomichi, Hirokawa Jiro, 2015 .

Evaluations of Coverage and Intersymbol Interference in a 60 GHz-Band Compact-Range Wireless Access System using Large Array Antennas

Ando Makoto, Araki Kiyomichi, Hirokawa Jiro, 2015 .

A Study of EM Simulation Modeling for Excitations using GSG Pads with Symmetric Circuit in On-Wafer Measurement

Ando Makoto, Hirokawa Jiro, Hirano Takuichi, 2011 .

Experimental evaluation in outdoor environment at 66 GHz band by LoS-MIMO configuration independent transmit distance

Hiraguri Takefumi, Nishimori Kentaro, Hirokawa Jiro, 2020 .

Feature detection scheme using Cyclic Prefix (CP) in OFDM Signal -- Hardware implementation of feature detector and its characteristics

Hirokawa Jiro, Kashiki Kanshiro, Watanabe Fumio, 2017 .

Multi-beam massive MIMO eliminating CSI estimation

Hiraguri Takefumi, Nishimori Kentaro, Hirokawa Jiro, 2018 .

Research and Standardization activty for IEEE802.15.3c mmW WPAN -- (6) Antenna

Seki Tomohiro, Miura Amane, Ando Makoto, 2007 .

Accurate field reconstruction of radial line slot antennas using the Gerchberg-Papoulis iterative algorithm

Ando Makoto, Hirokawa Jiro, Sano Makoto, 2014 .

On artificial propagation environment control by unmanned airplane

Hiraguri Takefumi, Nishimori Kentaro, Hirokawa Jiro, 2019 .

A Study of Gain Calculation for Antennas in a Lossy Medium

Ando Makoto, Hirokawa Jiro, Hirano Takuichi, 2014 .

Effectiveness of 64-beam massive MIMO in ab actual indoor environment

Hiraguri Takefumi, Nishimori Kentaro, Hirokawa Jiro, 2019 .

Experimental testbed for massive MIMO at 2.4/5.1/19.5 GHz bands

Hiraguri Takefumi, Nishimori Kentaro, Hirokawa Jiro, 2017 .

Beam Forming in Millimeter-Wave Band Utilizing Radio-over-Fiber Technique and Array Antenna Module Integrated with Photodiode

Ando Makoto, Hirokawa Jiro, Furuya Kotoko, 2016 .

Transmission Characteristics of On-Chip Microstrip Lines on a Silicon CMOS Substrate Due to the Area Density and Size of Dummy Fills

Ando Makoto, Hirokawa Jiro, Hirano Takuichi, 2012 .

Design of a Pentagonal Patch Antenna Attached to the Body

Ando Makoto, Hirokawa Jiro, Hirano Takuichi, 2015 .

De-embedding Method Using EM Simulator

Ando Makoto, Hirokawa Jiro, Hirano Takuichi, 2009 .

Redesign using Moment of Method of Slot Array SAR Antenna on Small Satellite considerd Hard Wall

Saito Hirobumi, Hirokawa Jiro, Ando Kengo, 2018 .

Proposal on 4 by 4 LoS-MIMO at 66 GHz band for the implementation of Drone

Hiraguri Takefumi, Nishimori Kentaro, Hirokawa Jiro, 2020 .

A Circularly Polarized Patch Antenna on the Thick Resin Fed by Coaxial Structure from the Back Side in a Silicon Chip

Ando Makoto, Hirokawa Jiro, Hirachi Yasutake, 2012 .

Millimeter-Wave Band Evaluation of Transmission Loss and its Effects on Antenna Efficiency in Post-Wall Waveguide Slot Arrays

Ando Makoto, Hirokawa Jiro, She Yuanfeng, 2009 .

64x64-element and 32x32-element slot array antennas using double-layer hollow-waveguide corporate-feed in the 120 GHz band

Ando Makoto, Hirokawa Jiro, Hirata Akihiko, 2013 .

Excitation of a Longitudinal Slot on a Hollow Rectangular Coaxial Line and Bandwidth Improvement of Inner Conductor Support

Ando Makoto, Hirokawa Jiro, Sano Makoto, 2011 .

Design of a 45-degree Linearly-polarized Hollow-waveguide Slot Two-dimensional Array Antenna with a Full-corporate-feed Circuit in the Lower Layer

Ando Makoto, Hirokawa Jiro, Tomura Takashi, 2010 .

Fabrication of a Slotted Waveguide Array at 94GHz by Diffusion Bonding of Laminated Thin Plates

Ando Makoto, Hirokawa Jiro, Zhang Miao, 2008 .

Design of a reflection-canceling slot pair array antenna on the post-wall waveguide

Ando Makoto, Hirokawa Jiro, Hirano Takuichi, 2009 .

Eigenmode Analysis of Propagation Constant for a Transmission Line with Dummy Metals on a Si CMOS Substrate

Ando Makoto, Hirokawa Jiro, Hirano Takuichi, 2010 .

Development of Tokyo Tech Ookayama Campus Millimeter-Wave Model Network and Propagation Characteristics in 25GHz band

Ando Makoto, Hirokawa Jiro, Taniguchi Toru, 2009 .