Presentation 2020-10-22
Fabrication of Broadband Folded Long-Hexagon Antenna and its Characteristic Measurement (2)
Toshiya Ishizaki, Kyo Kobayashi, Shinobu Ishigami, Ken Kawamata, Katsushige Harima, Shingo Inori,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Folded rhombic-antenna has been proposed as a broadband antenna for use in electromagnetic interference (EMI) measurements and radio frequency (RF) immunity testing. The folded rhombic antenna is developed by Okamura et al [1] in the 1950s as a broadband antenna that can be used up to about 700 MHz. In our previous research, the complex antenna factor and absolute gain were measured by the 3-antenna method for an antenna with a half size of the original antenna. As a result, it was confirmed that the bandwidth in upper limit is 8.5 GHz, but the voltage standing wave ratio (VSWR) of the antenna input terminal was not sufficiently small due to insufficient machining accuracy and insufficient strength at the feeding point. There was also a problem with the flatness of the gain [2]. Therefore, a folded long-hexagon antenna was developed to improve these problems. The developed antenna has wider bandwidth up to 20 GHz and smaller VSWR than the previous antenna [3]. In this report, for the purpose of improving the gain in the low frequency range, the antenna shape and antenna dimensions are changed from the report [3], and prototypes are fabricated. The results of measuring the characteristics will be shown.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) folded rhombic antenna / folded long-hexagon antenna / 3-antenna method / complex antenna factor / antenna gain
Paper # EMCJ2020-30,MW2020-44,EST2020-32
Date of Issue 2020-10-15 (EMCJ, MW, EST)

Conference Information
Committee MW / EST / EMCJ / IEE-EMC
Conference Date 2020/10/22(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Online
Topics (in Japanese) (See Japanese page)
Topics (in English)
Chair Yoshinori Kogami(Utsunomiya Univ.) / Shinichiro Ohnuki(Nihon Univ.) / Kensei Oh(Nagoya Inst. of Tech.)
Vice Chair Tadashi Kawai(Univ. of Hyogo) / Kensuke Okubo(Okayama Prefectural Univ.) / Shintaro Shinjo(Mitsubishi Electric) / Masayuki Kimishima(Advantest) / Jun Shibayama(Hosei Univ.) / Yasuhide Tsuji(Muroran Inst. of Tech.) / Atsuhiro Nishikata(Tokyo Inst. of Tech.)
Secretary Tadashi Kawai(Fujitsu Labs.) / Kensuke Okubo(Saitama Univ.) / Shintaro Shinjo(Aoyama Gakuin Univ.) / Masayuki Kimishima(ENRI) / Jun Shibayama(Denso) / Yasuhide Tsuji(NAIST) / Atsuhiro Nishikata
Assistant Kyoya Takano(Tokyo Univ. of Science) / Naoki Hasegawa(Softbank) / Hidenori Ishibashi(MitsubishiElectric) / Seiya Kishimoto(Nihon Univ.) / Nami Sasaki(Seiwa Electric MFG) / Hiroyoshi Shida(Tokin EMC Engineering) / Sho Muroga(Akita Univ.)

Paper Information
Registration To Technical Committee on Microwaves / Technical Committee on Electronics Simulation Technology / Technical Committee on Electromagnetic Compatibility / Technical Meeting on Electromagnetic Compatibility
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Fabrication of Broadband Folded Long-Hexagon Antenna and its Characteristic Measurement (2)
Sub Title (in English)
Keyword(1) folded rhombic antenna
Keyword(2) folded long-hexagon antenna
Keyword(3) 3-antenna method
Keyword(4) complex antenna factor
Keyword(5) antenna gain
1st Author's Name Toshiya Ishizaki
1st Author's Affiliation Tohoku Gakuin University(TGU)
2nd Author's Name Kyo Kobayashi
2nd Author's Affiliation Tohoku Gakuin University(TGU)
3rd Author's Name Shinobu Ishigami
3rd Author's Affiliation Tohoku Gakuin University(TGU)
4th Author's Name Ken Kawamata
4th Author's Affiliation Tohoku Gakuin University(TGU)
5th Author's Name Katsushige Harima
5th Author's Affiliation National Institute of Information and Communications Technology(NICT)
6th Author's Name Shingo Inori
6th Author's Affiliation Elena Electronics Co.Ltd.(Elena)
Date 2020-10-22
Paper # EMCJ2020-30,MW2020-44,EST2020-32
Volume (vol) vol.120
Number (no) EMCJ-199,MW-200,EST-201
Page pp.pp.31-35(EMCJ), pp.31-35(MW), pp.31-35(EST),
#Pages 5
Date of Issue 2020-10-15 (EMCJ, MW, EST)