Coplanar interdigital delay line theory and measurement

M. T. De Melo, M. J. Lancaste, J.-S. Hong, E. J. P. Santos, A. Belfort

Research output: Contribution to conferencePaperpeer-review

6 Citations (Scopus)


The authors have studied a coplanar interdigital delay line for different finger lengths. Using the conforming mapping theory and assming the pure TEM mode case the calculation of the phase velocity for an unit cell of the stucture is proposed and plotted as a function of the finger length. Coplanar strips interdigital delay lines have been fabricated and measured at a frequency range of 0.5-3 GHz. Both theoretical and experimental results are presented and compared with each other. Group velocity results decrease by about 70% as the finger length goes from 0.6mm to 4.2mm, which seem attractive to the design of coplanar istantaneous frequency measurement subsystem (IFM).

Original languageEnglish
Number of pages4
Publication statusPublished - 26 Mar 1999
Event29th European Microwave Conference 1999 - Munich, Germany
Duration: 5 Oct 19997 Oct 1999


Conference29th European Microwave Conference 1999
Abbreviated titleEuMC 1999

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Hardware and Architecture
  • Electrical and Electronic Engineering


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