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An effective third harmonic generator using a left‐handed nonlinear transmisson line
Author(s) -
Kim In Bok,
Kim Kang Wook,
Yoo Hyoungsuk,
Park Jonghoo,
Kim Hongjoon
Publication year - 2014
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.28146
Subject(s) - varicap , transmission line , microstrip , insertion loss , electrical engineering , generator (circuit theory) , microwave , materials science , diode , harmonic , optoelectronics , optics , physics , capacitance , acoustics , engineering , telecommunications , power (physics) , electrode , quantum mechanics
In this article, an effective third harmonic generator using a left‐handed nonlinear transmission line (LH NLTL) is presented. The proposed harmonic generator using the LH NLTL is composed of a series of varactor diodes and shunt inductances, which were implemented with a 0.2‐mm wide microstrip line. The harmonic generator was built on a Rogers RO4003 substrate and has dimensions of 12 × 7 mm 2 . The fabricated LH NLTL provides a maximum insertion loss of 5.2 dB, and a minimum insertion loss of 2.2 dB for a wide frequency band from 2.3 to 18.7 GHz. The measured minimum third harmonic conversion loss was 14.2 dB at an input frequency of 2.5 GHz. When compared to other works, a better third harmonic conversion efficiency is achieved with much smaller size in lower frequencies. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:568–570, 2014