| Presentation | 2021-11-10 A consideration on improvement of cross polarization of a varactor-loaded dual-band miniaturized planar antenna fed by an L-probe with straight shorted elements Ibuki Asahina, Sakuyoshi Saito, Yuichi Kimura, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper presents a varactor-loaded dual-band miniaturized multi-ring microstrip antenna (MR-MSA) with straight shorted elements. A varactor-loaded single-layer shorted MR-MSA fed by an L-probe has been proposed as a miniaturized frequency-tunable multiband planar antenna. In this antenna, the ring patches are divided into two separated elements by shorted vias, respectively. Furthermore, one of the two separated elements of each patch can be removed, and then further miniaturization of the antenna can be achieved. However, unwanted radiation from the L-probe results in increasement of cross polarization because the L-probe and the radiation elements are arranged in orthogonal directions each other. In order to reduce the cross polarization from the L-probe, a miniaturized varactor-loaded dual-band MSAs with the two straight shorted radiation elements and a modified L-probe with two strip lines at both sides of the feeding point is proposed. In this paper, frequency-tunable performance and radiation properties of the proposed frequency-tunable dual-band MR-MSA are investigated experimentally. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | planar antenna / microstrip antenna / multiband antenna / frequency-tunable antenna / varactor diode |
| Paper # | AP2021-104 |
| Date of Issue | 2021-11-03 (AP) |
| Conference Information | |
| Committee | AP / RCS |
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| Conference Date | 2021/11/10(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | NBC-Bekkan (Nagasaki) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Adaptive Antenna, Equalization, Interference Canceler, MIMO, Wireless Communications, etc. |
| Chair | Hiroshi Yamada(Niigata Univ.) / Eiji Okamoto(Nagoya Inst. of Tech.) |
| Vice Chair | Mitoshi Fujimoto(Fukui Univ) / Toshihiko Nishimura(Hokkaido Univ.) / Tomoya Tandai(Toshiba) / Fumihide Kojima(NICT) |
| Secretary | Mitoshi Fujimoto(NTT DOCOMO) / Toshihiko Nishimura(National Defense Academy) / Tomoya Tandai(NEC) / Fumihide Kojima(Panasonic) |
| Assistant | Dr. Kim(Niigata Univ.) / Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Tatsuki Okuyama(NTT DOCOMO) |
| Paper Information | |
| Registration To | Technical Committee on Antennas and Propagation / Technical Committee on Radio Communication Systems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A consideration on improvement of cross polarization of a varactor-loaded dual-band miniaturized planar antenna fed by an L-probe with straight shorted elements |
| Sub Title (in English) | |
| Keyword(1) | planar antenna |
| Keyword(2) | microstrip antenna |
| Keyword(3) | multiband antenna |
| Keyword(4) | frequency-tunable antenna |
| Keyword(5) | varactor diode |
| 1st Author's Name | Ibuki Asahina |
| 1st Author's Affiliation | Saitama University(Saitama Univ.) |
| 2nd Author's Name | Sakuyoshi Saito |
| 2nd Author's Affiliation | Saitama University(Saitama Univ.) |
| 3rd Author's Name | Yuichi Kimura |
| 3rd Author's Affiliation | Saitama University(Saitama Univ.) |
| Date | 2021-11-10 |
| Paper # | AP2021-104 |
| Volume (vol) | vol.121 |
| Number (no) | AP-233 |
| Page | pp.pp.22-27(AP), |
| #Pages | 6 |
| Date of Issue | 2021-11-03 (AP) |