Balanced dual-band diplexer design using microstrip and slot-line resonators

Hsiao Lan Chan, Ching Her Lee, Chung I.G. Hsu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)


A balanced dual-band diplexer formed using hybrid microstrip and slot-line structure is proposed with good common-mode (CM) suppression in this paper. The balanced dual-band diplexer was constructed by combining two dual-band bandpass filters (BPFs) operating at 1.92/5.25 GHz and 2.45/5.8 GHz, respectively, through T-junctions. The incompleteness of the slot-line resonator results from the open-boundary condition along the symmetry plane in CM operation is employed to effectively suppress the CM signals. A prototype of the proposed balanced dual-band diplexer was implemented and measured with a differential-mode isolation of higher than 38.8 (33.4) dB and a CM suppression of larger than 22.9 (22.4) dB in the frequency range of 1-8 GHz.

Original languageEnglish
Title of host publication2015 Asia-Pacific Microwave Conference Proceedings, APMC 2015
EditorsFan Meng, Wei Hong, Guang-Qi Yang, Zhe Song, Xiao-Wei Zhu
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479987658
Publication statusPublished - 2015 Jan 1
Event2015 Asia-Pacific Microwave Conference, APMC 2015 - Nanjing, China
Duration: 2015 Dec 62015 Dec 9

Publication series

NameAsia-Pacific Microwave Conference Proceedings, APMC


Other2015 Asia-Pacific Microwave Conference, APMC 2015

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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