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Resonator and bandpass filter using CRLH transmission line based on microstrip-coplanar-waveguide structure

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4 Author(s)
Sun Mingming ; College of Communication and Information Engineering, Nanjing University of Posts and Telecommunications, 210003 China ; Qin Weiping ; Wang Haimeng ; Chen Dong

A novel miniaturized resonator and bandpass filter configuration that employs dual-plane (microstrip/coplanar waveguide structure) composite right/left-handed transmission line (CRLH-TL) are proposed. The series capacitance of CRLH-TL unit cell is realized by metal-insulator-metal (MIM) capacitor implemented by the parallel microstrip lines on the upper layer of the substrate and the CPW on the ground plane. The shunt inductance of unit cell is provided by a shorted meander line stub on the lower metal layer. It is via-free and low-loss. In comparison with the conventional CRLH-TL resonator, the proposed resonator offers 3 times size reduction.

Published in:

Microwave and Millimeter Wave Technology, 2008. ICMMT 2008. International Conference on  (Volume:3 )

Date of Conference:

21-24 April 2008