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UMTS diplexer design using combined coplanar waveguide and microstrip

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2 Author(s)
Wei-Qin Xu ; Dept. of Electronic Eng., National Changhua University of Education, 1 Jin-De Rd., Changhua City, 50007 Taiwan ; Min-Hua Ho

In this paper, we propose a novel design of a UMTS diplexer using combined coplanar waveguide (CPW) and microstrip. The diplexer is composed of two bandpass filters, which termed as the Tx- and Rx-filter. The filter is composed of the lumped elements implemented by the CPW and microstrip structures. Zero has been implanted in each filter design for increasing the isolation between the Rx- and Tx-port. The two filters are connected in a parallel-cascade configuration. The microstrip is used to couple signals from/to the filters.

Published in:

TENCON 2007 - 2007 IEEE Region 10 Conference

Date of Conference:

Oct. 30 2007-Nov. 2 2007