Broadsidecoupled coplanar waveguide: Studies of hybrid modes and dominantmode operation Academic Article uri icon


  • Hybrid modes in the broadsidecoupled coplanar waveguide (CPW) are examined for the first time using the fullwave spectraldomain method. Various numerical results for the characteristic impedances and effective dielectric constants are obtained to study the behaviors of the dominant and higherorder modes as well as to assess the operating range of the dominant propagation modes in this structure. Criteria to enhance the dominantmode frequency range are also discussed. Over the dominantmode frequency range, the dispersion is low. However, variation of the characteristic impedances is more pronounced than that of the effective dielectric constants, indicating the need for dynamic characteristic impedances for accurate circuit designs. The results in the lowfrequency limit agree well with those obtained using a quasistatic approach. Also, the calculated effective dielectric constants of the dominant odd mode match closely the existing data for the effective dielectric constants of a shielded conductorbacked CPW. 1995 John Wiley & Sons, Inc. Copyright 1995 Wiley Periodicals, Inc., A Wiley Company

published proceedings

  • Microwave and Optical Technology Letters

author list (cited authors)

  • Nguyen, C.

citation count

  • 0

complete list of authors

  • Nguyen, Cam

publication date

  • November 1995