Compact fractal interferometers for a 4-bit IFM system

C. P.N. Silva, G. G. Machado, E. M.F. de Oliveira, M. R.T. de Oliveira, B. G.M. de Oliveira, M. T. de Melo*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Instantaneous frequency measurement (IFM) systems have been developed during the last decades, and new designs came across trying to keep the system as compact as possible. In this paper, the authors present compact interferometers based on Hilbert fractal geometry for a 4-bit IFM system. The interferometers operate in the range 4.66–6.38 GHz, using a Wilkinson power divider connected to two microstrip lines, which one of these is the Hilbert fractal curve. The design and simulations to be presented were done in a full wave EM simulator. Measured and simulating results are presented and compared.

Original languageEnglish
Pages (from-to)1153-1157
Number of pages5
JournalMicrowave and Optical Technology Letters
Issue number5
Early online date27 Mar 2017
Publication statusPublished - 01 May 2017
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2017 Wiley Periodicals, Inc.

Copyright 2017 Elsevier B.V., All rights reserved.


  • fractal geometry
  • IFM
  • interferometer
  • microstrip line

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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