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http://dx.doi.org/10.5370/KIEE.2015.64.8.1212

The Performance Comparison of The Harmonic Generators using Nonlinear Transmission Lines  

Park, Soonwoo (Dept. of Electrical Engineering, Kyungpook National University)
Kim, Hongjoon (Dept. of Electrical Engineering, Kyungpook National University)
Yoo, Hyoungsuk (Dept. of Biomedical Engineering, School of Electrical Engineering, University of Ulsan)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.64, no.8, 2015 , pp. 1212-1216 More about this Journal
Abstract
In this paper, we compared the performance of the Right Handed Nonlinear Transmission Line (RH-NLTL) and Left Handed Nonlinear Transmission Line (LH-NLTL) as a harmonic generator. For a performance comparison, we fabricated both a RH-NLTL and a LH-NLTL harmonic generator whose operational bandwidth is from 0.5 GHz to 1.5 GHz. Under the each condition for the RH-NLTL and the LH-NLTL to maximize second harmonic, the output power of the second harmonic was 9.33 dB lower than the input power for the RH-NLTL and 12.67 dB lower than the input power for the LH-NLTL. Under the each condition for the RH-NLTL and the LH-NLTL to maximize third harmonic, the output power of the third harmonic was 13.33 dB lower than the input power for the RH-NLTL and 14.83dB lower than the input power for the LH-NLTL. Also, we have observed that, generatlly, a RH-NLTL is useful in generating various multiple harmonics and a LH-NLTL is useful in generating a specific order of harmonic by adjusting a proper DC vias, input frequency and input power. These tendencies could be a good guideline to use NLTLs as a frequency multiplier.
Keywords
RH-NLTL; LH-NLTL; Harmonic generator; Frequency multiplier;
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