Presentation 2023-09-29
A consideration on a varactor-loaded miniaturized dual-band frequency-tunable planar antenna fed by an L-probe with a shorted and slitted patch
Ren Watanabe, Sakuyoshi Saito, Yuichi Kimura,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) This paper presents a varactor-loaded miniaturized dual-band frequency-tunable planar antenna fed by an L-probe. The proposed antenna consists of a shorted patch with a slit at the center and a feeding L-probe arranged in the same layer. Two varactor diodes are mounted in the vicinity of the shorted via and over the slit on the patch. The radiation patch is miniaturized by the shorted via and the slit and dual-band operation is realized by using two resonant modes with a length of a quarter wavelength and a half wavelength of the patch. Furthermore, the two resonant frequencies are controlled by a DC bias voltage applied for the varactors. In order to enhance the frequency-tunable range of the miniaturized frequency-tunable planar antenna, the frequency-tunable ranges of the two modes of the proposed antenna are designed as close as possible. In this paper, frequency-tunable performance as well as radiation properties of the proposed antenna is presented.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) planar antenna / microstrip antenna / multiband antenna / frequency-tunable antenna / varactor diode
Paper # AP2023-86
Date of Issue 2023-09-21 (AP)

Conference Information
Committee MW / AP
Conference Date 2023/9/28(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Kochi Castle Museum of History
Topics (in Japanese) (See Japanese page)
Topics (in English) Microwave, Millimeter wave
Chair Kensuke Okubo(Okayama Prefectural Univ.) / Kunio Sakakibara(Nagoya Inst. of Tech.)
Vice Chair Atsushi Sanada(Osaka Univ.) / Akihito Hirai(Mitsubishi Electric) / YUAN Qiaowei(Tohoku Inst. of Tech.)
Secretary Atsushi Sanada(Univ. of Electro-Comm) / Akihito Hirai(Murata Manufacturing) / YUAN Qiaowei(Iwate Univ.)
Assistant Tomoyuki Furuichi(Tohoku Univ.) / Kosuke Katayama(NIT Tokuyama College) / Tomoki Murakami(NTT)

Paper Information
Registration To Technical Committee on Microwaves / 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 consideration on a varactor-loaded miniaturized dual-band frequency-tunable planar antenna fed by an L-probe with a shorted and slitted patch
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 Ren Watanabe
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 2023-09-29
Paper # AP2023-86
Volume (vol) vol.123
Number (no) AP-194
Page pp.pp.42-47(AP),
#Pages 6
Date of Issue 2023-09-21 (AP)