Presentation 2021-09-09
Broadband Left-Handed Region of CRLH-TL Using an Ω-Shaped Interdigital Capacitive Gap
Tetsuhiro Takada, Mikio Tsuji, Hiroyuki Deguchi,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) Various structures have been proposed to expand the left-handed region of the right-handed/left-handed combined transmission line (CRLH-TL) using microstrip lines. However, in the conventional structures, it is difficult to obtain good transmission characteristics in the left-handed region due to the impedance mismatch between the input and output lines and the CRLH-TL. In this paper, an $omega$-type capacitive gap structure is used to expand the left-handed region. In addition, the ladder-type inductance structure stabilizes the Bloch impedance of the unit cell at 50+j0 $omega$ over the left-handed frequency range. Finally, the measured and calculated values are compared for experimental verification.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) CRLH-TL / Interdigital Structure / Bloch Impedance / Left-Handed Region
Paper # MW2021-34
Date of Issue 2021-09-02 (MW)

Conference Information
Committee MW / AP
Conference Date 2021/9/9(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Online
Topics (in Japanese) (See Japanese page)
Topics (in English) Microwave, Millimeter wave
Chair Noriharu Suematsu(Tohoku Univ.) / Hiroshi Yamada(Niigata Univ.)
Vice Chair Tadashi Kawai(Univ. of Hyogo) / Kensuke Okubo(Okayama Prefectural Univ.) / Hideyuki Nakamizo(Mitsubishi Electric) / Mitoshi Fujimoto(Fukui Univ)
Secretary Tadashi Kawai(Saitama Univ.) / Kensuke Okubo(Toshiba) / Hideyuki Nakamizo(NTT DOCOMO) / Mitoshi Fujimoto(National Defense Academy)
Assistant Naoki Hasegawa(Softbank) / Kosuke Katayama(Waseda Univ.) / Dr. Kim(Niigata Univ.)

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) Broadband Left-Handed Region of CRLH-TL Using an Ω-Shaped Interdigital Capacitive Gap
Sub Title (in English)
Keyword(1) CRLH-TL
Keyword(2) Interdigital Structure
Keyword(3) Bloch Impedance
Keyword(4) Left-Handed Region
1st Author's Name Tetsuhiro Takada
1st Author's Affiliation Doshisha University(Doshisha Univ.)
2nd Author's Name Mikio Tsuji
2nd Author's Affiliation Doshisha University(Doshisha Univ.)
3rd Author's Name Hiroyuki Deguchi
3rd Author's Affiliation Doshisha University(Doshisha Univ.)
Date 2021-09-09
Paper # MW2021-34
Volume (vol) vol.121
Number (no) MW-169
Page pp.pp.6-11(MW),
#Pages 6
Date of Issue 2021-09-02 (MW)