Presentation 2018-11-20
A Narrow-width Circular-polarized Antenna using a Gapped Loop with Patch Element
Yuki Takayama, Nobuhiro Kuga,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) This report proposes a circular polarized antenna with low-profile and narrow width. It consists of a gapped loop element and a patch element fed with a coaxial probe. The impedance of the antenna is dependent on the position of patch element fed. Assuming a infinite ground plane, we examine its characteristicsthrough FDTD simulation in terms of impedance, radiation pattern and axial ratioof the antenna, and current distribution. To validate the the analytics model in the simulation, input characteristics of the antenna are verified with experimentwhen the antenna area is 0.47$times$0.16$times$0.033$lambda _0 ^3$, antenna height are 0.066$lambda _0$ or 0.028$lambda _0$. simulation results shows the smallest antenna has radiation pattern gain of 9.3 dBi, 3 dB-axial ratio of 35$^circ$ and 100$^circ$in the H- and the E-planes of the patch element.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) Circularly Polarized / Patch element / Loop Element
Paper # AP2018-106
Date of Issue 2018-11-13 (AP)

Conference Information
Committee RCS / AP
Conference Date 2018/11/20(3days)
Place (in Japanese) (See Japanese page)
Place (in English) Okinawa Industry Support Center
Topics (in Japanese) (See Japanese page)
Topics (in English) Adaptive Antenna, Equalization, Interference Canceler, MIMO, Wireless Communications, etc.
Chair Tomoaki Otsuki(Keio Univ.) / Jiro Hirokawa(Tokyo Tech.)
Vice Chair Eisuke Fukuda(Fujitsu Labs.) / Satoshi Suyama(NTT DoCoMo) / Fumiaki Maehara(Waseda Univ.) / Ryo Yamaguchi(SoftBank)
Secretary Eisuke Fukuda(Hokkaido Univ.) / Satoshi Suyama(NTT) / Fumiaki Maehara(Saitama Univ.) / Ryo Yamaguchi(Mitsubishi Electric)
Assistant Kazushi Muraoka(NTT DOCOMO) / Shinsuke Ibi(Osaka Univ.) / Hiroshi Nishimoto(Mitsubishi Electric) / Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Michitaka Ameya(AIST)

Paper Information
Registration To Technical Committee on Radio Communication Systems / Technical Committee on Antennas and Propagation
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A Narrow-width Circular-polarized Antenna using a Gapped Loop with Patch Element
Sub Title (in English)
Keyword(1) Circularly Polarized
Keyword(2) Patch element
Keyword(3) Loop Element
1st Author's Name Yuki Takayama
1st Author's Affiliation Yokohama National University(Yokohama Nat'l Univ.)
2nd Author's Name Nobuhiro Kuga
2nd Author's Affiliation Yokohama National University(Yokohama Nat'l Univ.)
Date 2018-11-20
Paper # AP2018-106
Volume (vol) vol.118
Number (no) AP-310
Page pp.pp.23-28(AP),
#Pages 6
Date of Issue 2018-11-13 (AP)