Resonance Frequency and Bandwidth of the Negative/Positive nth Mode of a Composite Right-/Left-Handed Transmission Line
- Authors
- Kim, Seong-Jung; Lee, Jeong-Hae
- Issue Date
- Jan-2018
- Publisher
- KOREAN INST ELECTROMAGNETIC ENGINEERING & SCIENCE
- Keywords
- Bandwidth; Composite Right-/Left-Handed Transmission Line; Field Distribution; +/- nth-Mode Resonance Frequency
- Citation
- JOURNAL OF ELECTROMAGNETIC ENGINEERING AND SCIENCE, v.18, no.1, pp.1 - 6
- Journal Title
- JOURNAL OF ELECTROMAGNETIC ENGINEERING AND SCIENCE
- Volume
- 18
- Number
- 1
- Start Page
- 1
- End Page
- 6
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/4121
- DOI
- 10.26866/jees.2018.18.1.1
- ISSN
- 2234-8409
- Abstract
- In this study, the analytic expression for the positive/negative nth-mode resonance frequency of an N unit cell composite right-/lefthanded (CRLH) transmission line is derived. To explain the resonance mechanism of the nth mode, especially for the negative mode, the current distribution of the N unit cell CRLH transmission line is investigated with a circuit simulation. Results show that both positive and negative nth resonance modes have n times current variations, but their phase difference is 180 degrees as expected. Moreover, the positive nth resonance occurs at a high frequency, whereas the negative nth resonance transpires at a low frequency, thus indicating that the negative resonance mode can be utilized for a small resonator. The correlation between the slope of the dispersion curve and the bandwidth is also observed. In sum, the balanced condition of the CRLH transmission line provides a broader bandwidth than the unbalanced condition.
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Collections - College of Engineering > School of Electronic & Electrical Engineering > 1. Journal Articles
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