Mode conversion at CPW-to-microstrip line transitions

Raskin, Jean-Pierre;Gauthier, G.;Katehi, L.P.B.;Rebeiz, G.M.
(2000) IEEE Transactions on Microwave Theory and Techniques — Vol. 48, n° 1, p. 158-160 (2000)

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Authors
  • Raskin, Jean-PierreUCLouvain
    Author
  • Gauthier, G.Michigan University, Ann Arbor, MI, USA
    Author
  • Katehi, L.P.B.Michigan University, Ann Arbor, MI, USA
    Author
  • Rebeiz, G.M.Michigan University, Ann Arbor, MI, USA
    Author
Abstract
Mode conversion at the transition between grounded coplanar waveguide (GCPW) and microstrip line is demonstrated. Experimental results show the effect of overmoding in a conductor-backed coplanar waveguide on the transition behavior. A simple micromachining solution is used to cancel the parasitic modes triggered by the transition in the GCPW feed line. This results in an insertion loss of 0.3 dB and a return loss better than -18 dB from 75 to 110 GHz. The transition can prove very useful for millimeter-wave packaging and interconnects.
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Raskin, J.-P., Gauthier, G., Katehi, L. P. B., & Rebeiz, G. M. (2000). Mode conversion at CPW-to-microstrip line transitions. IEEE Transactions on Microwave Theory and Techniques, 48(1), 158-160. https://doi.org/10.1109/22.817486 (Original work published 2000)