论文信息 - A novel balun structure with a composite right–left‐handed transmission line

A novel balun structure with a composite right–left‐handed transmission line

A novel balun structure with a composite right–left-handed transmission line (CRLH-TL) is proposed. A microstrip implementation of the left-handed transmission line (LH-TL) and the equivalent-circuit model for the CRLH-TL are presented and the related parameters of the circuit are given. Utilizing the advanced phase-shift characteristics of CRLH-TL and combining the traditional right-handed transmission line (RH-TL) with the CRLH-TL, the design process of the balun becomes much easier and simpler. The novel balun structure operating at the center frequency 2.4 GHz with low loss and a wide frequency band is illustrated in detail. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 45: 422–424, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20842

Shanjia Xu | Zhongxiang Zhang | Zhong-xiang Zhang | Shan-jia Xu

[1] T. Itoh,et al. Transmission line approach of left-handed (LH) materials and microstrip implementation of an artificial LH transmission line , 2004, IEEE Transactions on Antennas and Propagation.

[2] Kuldip Gupta,et al. A new design procedure for single-layer and two-layer three-line baluns , 1998, IMS 1998.

[3] G. Eleftheriades,et al. Transmission line models for negative refractive index media and associated implementations without excess resonators , 2003, IEEE Microwave and Wireless Components Letters.

[4] G. Eleftheriades,et al. Planar negative refractive index media using periodically L-C loaded transmission lines , 2002 .

[5] T. Itoh,et al. A novel composite right-/left-handed coupled-line directional coupler with arbitrary coupling level and broad bandwidth , 2004, IEEE Transactions on Microwave Theory and Techniques.

[6] V. Veselago. The Electrodynamics of Substances with Simultaneously Negative Values of ∊ and μ , 1968 .