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http://dx.doi.org/10.12673/jant.2011.15.1.097

Dual-Band Balanced Mixer using Nonlinear Phase Characteristic of CRLH Transmission Line  

Jung, Youn-Woo (Department of Radio Communication Engineering, Kumoh National Institute of Technology)
Kim, Young (Department of Radio Communication Engineering, Kumoh National Institute of Technology)
Yoon, Young-Chul (Department of Electronics & Information Communication Eng., Kwandong University)
Publication Information
Journal of Advanced Navigation Technology / v.15, no.1, 2011 , pp. 97-103 More about this Journal
Abstract
This paper presents a dual-band balanced mixer using nonlinear phase characteristic of composite right/left-handed (CRLH) transmission line. This metamaterial structure provides low LO leakage and high RF to LO isolation without additional filters for LO and RF path. The balanced mixer consists of balun and Wilkinson divider with dual-band characteristic of unit-cell which behaves like a CRLH metamaterial. Experimental results are used to verify the proposed metamaterial functions. The balanced mixer design results in an operating frequency of 870 MHz and 1660 MHz with an optimum mixer conversion loss of 15.2 dB at 870 MHz and 21.2 dB at 1660 MHz.
Keywords
Balanced Mixer; Composite Right/Left-Handed Transmission Line; Dual-Band; Metamaterial;
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