KEYCOM provides solutions in the 300 GHz to 1 μHz frequency range (SHF/EHF/MW/UHF/VHF/ULF).
We undertake designing, manufacturing and measuring. Please feel free to contact us.

Papers etc.

Model No. PPE

Articles

- Nematic liquid crystal dielectric measurement at 10 KHz ~ 40 GHz and applications to variable delay line
- Y.Nakayama, Yu.A.Pashkin & J.S.Tsai"Coherent control of macroscopic quantum states in a Single-Cooper-pair box"
- M.Hagiwara, K.Katsumata, I.Yamada and H.Suzuki"Antiferromagnetic resonance in MnF2 over Wide ranges of frequency and magnetic field"J.Phys:condens.Matter 8(1996)7346-7354
-"Asphalt road surface reflection characteristics in wire telecommunications / WAC Net(IEEE 802.116)"
- H.Suzuki, Others, "Ultra low dielectric constant multilayer Printed circuit boad"1991 Japan IEMT Symposium
- H.Suzuki, others"Wide band RF-Leakage test method for cables"IEEE 1989 National Symposium on Electromagnetic Compatibillity Denver, Colorad

Paper

Dielectric constant (permittivity, εr'), Permeability (μr'), Electric wave absorption rate etc.

"Measurements of dielectric properties of nematic liquid cristals at 10kHz to 40GHz and application to a veriable delaya line"
Electronics and Communications in JAPAN, Part2, Vol. 86, No.8, 2003 Wiley Periobicals, Inc.
渡辺正浩、鈴木洋介
" WAC Net(IEEE 802.116)無線通信におけるアスファルト路面反射の特性 "
電子通信情報学会 2003ソサエティー大会 A-17-17,2003年9月23日~26日 新潟大学
H.Suzuki, T.kamijo
" Millimeter wave measurment of complex permittivity by perturbation method using open resonator "
IEEE Trans. Instrument and Measurment VOL.57. No.12, Dec.2008 pp2868-2873
H.Suzuki, Others,
" Free space measurmet method with parallel electromagnetic wave beam by using dielectric lenses and horn antennas for reflectivity of electromagnetic absorbers in millimeter waves "
IEICE Trans, electro., Vol. E89-C, No.1 Jan.(2006)24-29
M.Noda, H.Suzuki, Others,
" Analysis of complex permittivity of liposome for it's biochemical dynamics up to 30 GHz range "
IEEE MTT-S International microwave symposium, 11-16 June 2006 San Francisco Page 1983-1986
ISSN : 0149-645X
H.Suzuki,
" Microwave measurment of complex permittivity of thick plate by placing the material under test on a microstripline resonator "
Eu Mc 21-4, 2006, Manchester, uk
H.Suzuki, T.Hocchi, M.Inoue
" Measurments of complex permittivity and permabilty with changing an angle of incidence of parallel beam generated by dielectric lens "
APMC 2006 Dec. 12-15, 2006, WEOF-63 Pacifico Yokohama, JAPAN
武田茂、鈴木洋介
" NSSのシート抵抗と伝送減衰率 Ploss /Pin の関係の回路解析 "
電子情報通信学会 全国大会(2007春)
武田茂、和田守弘、鈴木洋介
" 短絡マイクロストリップ線路を用いた高周波磁性材料測定システム "
日本応用磁気学会学術講演会(2006)12aB-10
武田茂、鈴木洋介
" SMSL法による複素透磁率測定における結合係数 "
電気学会全国大会(2007)、2-141
武田茂、鈴木洋介
" 強磁性共鳴における多結晶ガーネットにおける残存帯磁率 "
日本応用磁気学会学術講演会(2007)14PF-9
Y.Nakamma, Yu.A.Pashkin & J.S.Tsai
" Coherent control of macroscopic quantum statets in a Single-Cooper-pair box "
(謝辞) Nature, Vol.398, No.6730, PP786-788, 29 April 1999
Hirosuke Suzuki, Tomio Hotchi, Masato Inoue, Shigeru Takeda
" Radiation Suppression Ratio Measurment of Noise Suppression sheet by Compact 3m Method "
paper#137 EMC Zurich 2007, 24-28 Sept.2007
Hirosuke Suzuki, Tomio Hotchi, Masato Inoue, Shigeru Takeda
" EMI Evaluation of a Cell phone without an Anechoic Chamber "
MO-IF-3-3 EMC-in-Singapore 2008, 19-22 May 2008
Shigeru Takeda,Hirosuke Suzuki
" Measurement System of FMR Line width ΔHw using Shorted Stripline "
Inter mag 2008, 4-8 May Madrid
Hirosuke Suzuki, Tomio Hotchi
" Microwave measurment of complex permittivity of a sheet material under test sandwiched between sheet metal and a calibrated stripline resonator "
2008 IEEE I2MTC,Victoria,canada paper#1569085274,Tue_20 12-15 May 2008
Hirosuke Suzuki, Tomio Hotchi, Masato Inoue, Shigeru Takeda
" Radiation Suppression Rario Measurement of Noise Suppression Sheet by Compact 3m Method "
Paper#137 EMC Zurich 2007 24-28 Sept. 2007
Shigeru Takeda, Hirosuke Suzuki
" Measurement System of FMR Line Width Δ Hw using shorted Stripline "
Intermag 2008, 4-8 May Madrid
Hirosuke Suzuki, Tomio Hotchi, Masato Inoue, Shigeru Takeda
"EMI Evaluation of a Cell phone without an Anechoic Chamber "
MO-IF-3-3 EMC-in- Singapore 2008, 19-22 May 2008
Hirosuke Suzuki, Tomio Hotch
" Microwave measurement of Complex Permittivity of a sheet material under test sandwiched between sheet metal and a calibrated stripline resonator "
2008 IEEE I2MTC, Victoria, Canada Paper#1569085274, TUE_20 12-15 May 2008
   

ESR

M.Hagiwara, K.Katsumata, I.Yamada and H.Suzuki
" Aniferromagnetic resonance in MnF2 over Wide ranges of frequency and magnetic field "
J.Phys:condens.Matter 8 (1966) 7346-7354
鈴木洋介、白石卓夫、玉村寿、大矢博昭
" 水溶液ESR測定のための測定セルの最適化 "
第45回電子スピンサイエンス学会年会 2006年11月14日~16日、3A-02
大矢博昭、鈴木洋介、発知富夫、白石卓夫
" スピントラップ法によるマイクロバブルの研究 "
第45回電子スピンサイエンス学会年会 2006年11月14日~16日、3A-09
I.Ohsawa, S.Ohta, Others,
" Hydrogen acts as a therapeutic antioxidant by selectively reducing cytotoxic oxygen radicals "
Nature Medicine, published online 7 May 2007; doi:10.10381nm 1577, キーコム:ESRによる検証実験担当
H.Ohya, H.Suzuki
" Microstripline resonator probe using evanescent microwave combined with 27kg transpurtable ESR spectrometer "
A Joint Conference of the International Symposium on Electron Spin Science and the 46th Annual Meeting of the Society of Electron Spin Science and Technology (ISESS-SEST2007) November 6-9, 2007 Granship, Shizuoka, Japan, 1A10
   

Radar

H.Suzuki, M.Inoue
" Millimeter wave radar evaluation Systems setting up at small room by using sliding short terminal at the end of delay line "
Eu Mw 2w5 Paris France
酒井文則、鈴木洋介 他
" コンクリート中の鉄筋径及び位置の同時推定 "
電子情報通信学会総合大会2007年
F.Sakai, H.Suzuki, Others
" High Resolution Millimeter wave Imaging Radar Using Inline Tx/Rx Antennas "
Eu Mw 2008 Eu RAD10-5, Amsterdam
F.Sakai, H.Suzuki, Others
" Multi Focus Millimeter wave Imaging Radar Using Inline Tx/Rx Printed Antenna "
APMC 2008 H3-07, Hong Kong and Macau, China
Andrey Osipov, Hirokazu Kobayashi, Hirosuke Suzuki
"An Improved Image-Based Circular Near-Field-to-Far-Field Transformation"
IEEE TRANSACTIOND ON ANTENNAS AND PROPAGATION, VOL. 61, No. 2, FEBRAUARY 2013

Telecommunications

亀井利久、内海要三、千野聖純、鈴木洋介 "40GHz用分波器"
信学技報 IECE Technical Report MW 2006-137 (2006-11)
電子情報通信学会論文誌 C Vol.J85-C No.12 PP.1149-1158 2002年12月
Y.Utsumi,T.Kamei, N,Thara, H.Suzuki
" The duplexer for the urban cable television 40GHz band bi-directional transmission system "
PIERS 2007 in Prague Progress in electromagnetics reserch symposium 27-30 Aug. 2007
Prague, Czech Republic
   

Magazines

H. Suzuki "Electro-magnetic absorption material measurement technology" BM News No.27 2002.3.31

- H. Suzuki "Absorption characteristics evaluation technology National stage August 2003
鈴木洋介
" ディスプレイのEMI対策と対策材の評価方法 "
月刊ディスプレイ 2007年3月号(Vol.13 No.3)
鈴木洋介
" 誘電率・透磁率測定装置 "
月刊電子材料 2007年6月号(第46巻第6号)
   

Standardization (H. Suzuki of KEYCOM participated in standardization process as an official member)

ファインセラミックのミリ波帯における誘電特性測定方法
Part2 : Open type resonator method -JIS R 1660-2:2004-
Noise Suppression Sheet for digital devices and equipment 
Part2:Definitions and general Properties―IEC62333-1:2006-05―
Part2:Measuring method―IEC62333-2:2006-05―
・電波吸収体のミリ波帯における電波吸収特性測定方法―JIS R 1679:2007―
Measurement Methods for Reflectivity of Electromagnetic Wave Absorbers in Millimeter Wave Frequency
―IEC62431/Ed (2008年制定予定)