Slow-Wave Effect of Electronically-Controlled Composite Right/Left-Handed (CRLH) Transmission Line

Sungjoon LIM

doi:10.1093/ietcom/e91-b.5.1665

Slow-Wave Effect of Electronically-Controlled Composite Right/Left-Handed (CRLH) Transmission Line

Sungjoon LIM

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A dispersion diagram is useful in interpreting the characteristics of a periodic structure. In particular, the fast-wave region, where the wave is radiating, and the slow-wave region, where the wave is guided, can be determined from the dispersion diagram. An electronically-controlled composite right/left-handed (CRLH) transmission line (TL) was previously proposed and utilized as a leaky-wave (LW) antenna operating in the fast-wave region. However, since a guided-wave application operates in the slow-wave region, it is meaningful to study slow-wave effects of the proposed TL. In this paper, the dispersion diagram is used to investigate the slow-wave factor (SWF), which is necessary to understand the fast/slow-wave operations. Furthermore, the frequency characteristics are measured to find the cut-off frequencies in the LH and RH regions. Based on experimental results, it is observed at a fixed frequency, 2.6-GHz, that the phase of a proposed 6-cell structure can be changed by up to 280 in the LH slow-wave region.

Publication: IEICE TRANSACTIONS on Communications Vol.E91-B No.5 pp.1665-1668

Publication Date: 2008/05/01

Publicized

Online ISSN: 1745-1345

DOI: 10.1093/ietcom/e91-b.5.1665

Type of Manuscript: LETTER

Category: Antennas and Propagation

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Sungjoon LIM, "Slow-Wave Effect of Electronically-Controlled Composite Right/Left-Handed (CRLH) Transmission Line" in IEICE TRANSACTIONS on Communications, vol. E91-B, no. 5, pp. 1665-1668, May 2008, doi: 10.1093/ietcom/e91-b.5.1665.
Abstract: A dispersion diagram is useful in interpreting the characteristics of a periodic structure. In particular, the fast-wave region, where the wave is radiating, and the slow-wave region, where the wave is guided, can be determined from the dispersion diagram. An electronically-controlled composite right/left-handed (CRLH) transmission line (TL) was previously proposed and utilized as a leaky-wave (LW) antenna operating in the fast-wave region. However, since a guided-wave application operates in the slow-wave region, it is meaningful to study slow-wave effects of the proposed TL. In this paper, the dispersion diagram is used to investigate the slow-wave factor (SWF), which is necessary to understand the fast/slow-wave operations. Furthermore, the frequency characteristics are measured to find the cut-off frequencies in the LH and RH regions. Based on experimental results, it is observed at a fixed frequency, 2.6-GHz, that the phase of a proposed 6-cell structure can be changed by up to 280 in the LH slow-wave region.
URL: https://global.ieice.org/en_transactions/communications/10.1093/ietcom/e91-b.5.1665/_p

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@ARTICLE{e91-b_5_1665,
author={Sungjoon LIM, },
journal={IEICE TRANSACTIONS on Communications},
title={Slow-Wave Effect of Electronically-Controlled Composite Right/Left-Handed (CRLH) Transmission Line},
year={2008},
volume={E91-B},
number={5},
pages={1665-1668},
abstract={A dispersion diagram is useful in interpreting the characteristics of a periodic structure. In particular, the fast-wave region, where the wave is radiating, and the slow-wave region, where the wave is guided, can be determined from the dispersion diagram. An electronically-controlled composite right/left-handed (CRLH) transmission line (TL) was previously proposed and utilized as a leaky-wave (LW) antenna operating in the fast-wave region. However, since a guided-wave application operates in the slow-wave region, it is meaningful to study slow-wave effects of the proposed TL. In this paper, the dispersion diagram is used to investigate the slow-wave factor (SWF), which is necessary to understand the fast/slow-wave operations. Furthermore, the frequency characteristics are measured to find the cut-off frequencies in the LH and RH regions. Based on experimental results, it is observed at a fixed frequency, 2.6-GHz, that the phase of a proposed 6-cell structure can be changed by up to 280 in the LH slow-wave region.},
keywords={},
doi={10.1093/ietcom/e91-b.5.1665},
ISSN={1745-1345},
month={May},}

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TY - JOUR
TI - Slow-Wave Effect of Electronically-Controlled Composite Right/Left-Handed (CRLH) Transmission Line
T2 - IEICE TRANSACTIONS on Communications
SP - 1665
EP - 1668
AU - Sungjoon LIM
PY - 2008
DO - 10.1093/ietcom/e91-b.5.1665
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E91-B
IS - 5
JA - IEICE TRANSACTIONS on Communications
Y1 - May 2008
AB - A dispersion diagram is useful in interpreting the characteristics of a periodic structure. In particular, the fast-wave region, where the wave is radiating, and the slow-wave region, where the wave is guided, can be determined from the dispersion diagram. An electronically-controlled composite right/left-handed (CRLH) transmission line (TL) was previously proposed and utilized as a leaky-wave (LW) antenna operating in the fast-wave region. However, since a guided-wave application operates in the slow-wave region, it is meaningful to study slow-wave effects of the proposed TL. In this paper, the dispersion diagram is used to investigate the slow-wave factor (SWF), which is necessary to understand the fast/slow-wave operations. Furthermore, the frequency characteristics are measured to find the cut-off frequencies in the LH and RH regions. Based on experimental results, it is observed at a fixed frequency, 2.6-GHz, that the phase of a proposed 6-cell structure can be changed by up to 280 in the LH slow-wave region.
ER -