Abstract— Our study concerns the analysis of K-band passive devices using a new technology, substrate integrated waveguide (SIW), by the HFSS code. This technology has been applied successfully to the conception of planar compact components for the microwave and millimeter waves applications. This application focuses on three components: A coupler junction (-3dB) used for routing, dividing and combining the signals in the microwave system. The levels of reflection and isolation below -15dB occupy more than 26.43% of the bandwidth, the insertion loss S21 and coupling S31 fluctuate between -3.24dB and -3.78dB, respectively. The SIW ferrite junction circulator has potential applications in integrated communication and radar systems. Its frequency response shows reflection losses below -15 dB in more than 21.75% of the bandwidth, an insertion loss about -0.65 dB, while the maximum of the isolation is -38.11dB. The T-junction SIW power divider (-3dB) indicates that levels of reflection below -15dB occupy more than 26.32% of the bandwidth. The transmission coefficients S21 and S31 are around -3.54dB, showing equal division of the power injected into port 1. In this paper, design considerations and results are discussed and presented.
Index Terms— Rectangular wave guide, substrate integrated waveguide, HFSS, coupler, circulator, power divider.
Bouchra Rahali and Mohammed Fehamare are with STIC Laboratory, University of Tlemcen, Tlemcen, Algeria (e-mail: b_rahali@hotmail.fr, m_feham@mail.univ-tlemcen.dz).
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Cite: Bouchra Rahali and Mohammed Feham, " Design of K-Band Substrate Integrated Waveguide Coupler, Circulator and Power Divider," International Journal of Information and Electronics Engineering vol. 4, no. 1, pp. 47-53, 2014.
