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A linearity improved quad-band amplifier based on E-CRLH transmission line

Published online by Cambridge University Press:  23 June 2017

Rasool Keshavarz ,
Abbas Mohammadi  and
Abdolali Abdipour
Rasool Keshavarz*
Affiliation:
Institute of Communications Technology and Applied Electromagnetic, and Micro/Millimeter-Wave and Wireless Communication Research Laboratory, Radio Communications Center of Excellence, Electrical Engineering Department, Amirkabir University of Technology, 15914 Tehran, Iran
Abbas Mohammadi
Affiliation:
Institute of Communications Technology and Applied Electromagnetic, and Micro/Millimeter-Wave and Wireless Communication Research Laboratory, Radio Communications Center of Excellence, Electrical Engineering Department, Amirkabir University of Technology, 15914 Tehran, Iran
Abdolali Abdipour
Affiliation:
Institute of Communications Technology and Applied Electromagnetic, and Micro/Millimeter-Wave and Wireless Communication Research Laboratory, Radio Communications Center of Excellence, Electrical Engineering Department, Amirkabir University of Technology, 15914 Tehran, Iran
*
Corresponding author: Dr. Rasool Keshavarz Email: rasoolp92@gmail.com
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Abstract

This paper outlines a new class of quad-band amplifier (QBA) realized using extended composite right- and left-handed coupled lines. The design procedure to reach the QB CLs with predefined frequency operations and characteristic impedance of their ports is clearly presented. Designed and fabricated QBA operation frequencies are $f_{b_{1}} = 2.9\,GHz$ and ${\rm \;} f_{b_2} = 4.3\,GHz$ (output port B) ${\bi \;} \; f_{f_1} = 3.8\,GHz\; $ and $\; \; f_{f_2} = 5\,GHz\; $ (output port C) and the proposed structure exhibits a matching (−10 dB) bandwidth of over 300 MHz in each operation frequency bands. In addition, the insertion loss is smaller than 1 dB. The length and the width of the proposed QBA are approximately 7.7 and 2.4 cm, respectively. To further demonstrate the idea, a QBA is successfully designed and fabricated. The simulated and measured results of the proposed QBA are presented to verify the proposed idea.

Keywords

Coupled linesE-CRLHQuad-band amplifierMetamaterial
Type
Research Papers
Information
International Journal of Microwave and Wireless Technologies , Volume 9 , Special Issue 8: Biomedical Applications of RF/Microwave and Optics Technologies , October 2017 , pp. 1603 - 1610
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2017 

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References

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