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http://dx.doi.org/10.5515/KJKIEES.2016.27.8.701

Ultra-Wideband Microstrip-to-Finite Ground Coplanar Waveguide Transition for Millimeter-Wave Systems  

Kim, Young-Gon (Seeker & EO/IR R & D Lab, LIG Nex1)
Kim, Hong-Rak (Seeker & EO/IR R & D Lab, LIG Nex1)
Jung, Bae-Ho (Seeker & EO/IR R & D Lab, LIG Nex1)
Kim, Kang Wook (School of Electronics Engineering, Kyoungpook National University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.27, no.8, 2016 , pp. 701-708 More about this Journal
Abstract
A new design for an ultra-wideband microstrip-to-FGCPW(Finite Ground Coplanar Waveguide) transition is presented. The proposed transition provides the electric field and impedance matching between adjacent transmission lines by ground shaping. The transition is designed on the analytical expressions of whole transitional structure. Conformal mapping is applied to obtain the characteristic impedance of FGCPW with bottom aperture within 3.3 % accuracy as compared with the EM-simulation results. As design example, the fabricated transition in back-to-back configuration provides insertion loss less than 1 dB per transition and return loss better than 10 dB for frequencies from 9 GHz to over 40 GHz.
Keywords
Conformal Mapping; Finite Ground Coplanar Waveguide(FGCPW); Klopfenstein Taper; Microstrip; Transition;
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