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2011-06-17

High Isolation Dbr Diplexer Using in-Line Scmrc

By Chun Hong Chen, Hongmei Wu, and Wen Wu
Progress In Electromagnetics Research C, Vol. 22, 97-108, 2011
doi:10.2528/PIERC11051208

Abstract

A new microstrip diplexer with very high output isolation and low insertion losses is presented in this letter. With the adoption of the spiral compact microstrip resonant cell (SCMRC) form into the dual behavior resonator (DBR) microstrip filter design, a bandpass filter with high rejection in the upper stopband can be achieved. Therefore, very high output isolation for the diplexer can be realized. Furthermore, the proposed diplexer also has a property of low insertion loss in the passband. To validate the design theory, one demonstrator diplexer has been designed and fabricated; the results indicate that the proposed diplexer has good performance of simple structure, better than 65 dB output isolation in the stopband, and less than 1.2 dB insertion losses in the passband.

Citation


Chun Hong Chen, Hongmei Wu, and Wen Wu, "High Isolation Dbr Diplexer Using in-Line Scmrc," Progress In Electromagnetics Research C, Vol. 22, 97-108, 2011.
doi:10.2528/PIERC11051208
http://jpier.org/PIERC/pier.php?paper=11051208

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