Design, Simulation and Fabrication of Compact Microstrip Coupler with Performance Improvement and Harmonic Suppression
Subject Areas : electrical and computer engineeringT. Barati Kashantoui 1 , S. Roshani 2
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Keywords: Branch line couplermicrostrip linesize reductionharmonic suppressionopen ended stub,
Abstract :
In this paper a novel branch line coupler (BLC) with size reduction and performance improvement at 2.4 GHz is proposed. The proposed branch line coupler suppresses the second harmonic with 38.55 dB attenuation level. The scattering parameters of the proposed BLC are given as follows: S11= -67.67 dB, S12= -2.95 dB, S13= -3.09 dB and S14= -49.78 dB. The bended line structures and open-ended stubs are used in design process. The proposed BLC has 45.4% size reduction compare to the conventional one. The proposed device fabricated on RT/Duroid 5880 substrate.
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