Abstract
A microstrip duplexer for a modification of a PCS communication system operating at frequencies of 1.84–1.87 and 1.75–1.78 GHz is described. The duplexer containing microstrip bandpass filters on high dielectric constant substrates (ɛ r = 92) are compared with duplexers manufactured on microwave ceramic materials with high values of ɛ r . The microstrip bandpass filters use stepped-impedance resonators placed one near another with a gap of 0.1–0.2 mm. It is shown that the microstrip duplexer has slightly lower insertion loss and occupies smaller volume than a duplexer using coaxial dielectric resonators having a rectangular cross section of 3 × 3 mm and ɛ r = 92.
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Original Russian Text © A.V. Zakharov, S.A. Rozenko, 2012, published in Radiotekhnika i Elektronika, 2012, Vol. 57, No. 6, pp. 713–720.
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Zakharov, A.V., Rozenko, S.A. Duplexer designed on the basis of microstrip filters using high dielectric constant substrates. J. Commun. Technol. Electron. 57, 649–655 (2012). https://doi.org/10.1134/S1064226912030187
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DOI: https://doi.org/10.1134/S1064226912030187