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High isolation microstrip bandpass diplexer for industry 4.0 communication

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Abstract

This paper presents a compact microstrip diplexer with high isolation for the new industry 4.0 communication. The proposed device consists of separating and combining signals having two widely different frequency bands. Moreover, the diplexer configuration is based on two bandpass filters, which are designed using interdigital lines. A T-shaped junction has been used to match between these filters and developed to miniature the diplexer. To validate the simulation results, we have fabricated the proposed diplexer. To justify the simulated and measured results, Monte Carlo simulation has been achieved. Experimental results show good performances, which are satisfactory return losses about of 11 dB, and the insertion losses are approximately 2.2 and 1.9 dB respectively of the two frequency bands [1.7–2.3] GHz and [3.2–4.2] GHz. The designed diplexer also exhibits high isolation, which is S23 <   − 60 dB between the two channels, and compact size is approximately 34 × 32 × 0.8 mm3. These prove that proposed diplexer could be a good candidate for industry 4.0 communication.

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Authors and Affiliations

  1. Laboratory of Sciences and Advanced Technology, Department of Civil and Industrial Sciences and Technologies, National School of Applied Sciences, Abdelmalek Essaâdi University, Tétouan, Morocco

    Souhaila Ben haddi & Alia Zakriti

  2. Information System and Telecommunication Laboratory, Faculty of Sciences, Abdelmalek Essaâdi University, Tétouan, Morocco

    Asmaa Zugari & Soufiane Achraou

Authors
  1. Souhaila Ben haddi
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  2. Asmaa Zugari
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  3. Alia Zakriti
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  4. Soufiane Achraou
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Correspondence to Souhaila Ben haddi.

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Ben haddi, S., Zugari, A., Zakriti, A. et al. High isolation microstrip bandpass diplexer for industry 4.0 communication. Microsyst Technol 28, 1167–1178 (2022). https://doi.org/10.1007/s00542-022-05276-x

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