Signal flow graph for a probe-fed microstrip patch antenna

J. E. Ruyle, J. T. Bernhard

Research output: Contribution to journalArticlepeer-review


Complex coupling environments are difficult to represent analytically. Signal flow graphs offer an analysis method for such networks, allowing network elements to be treated individually. These elements can then be reintegrated and ultimately analyzed using Mason's Gain Rule. This letter presents a signal flow graph of the microstrip patch antenna, a simple coupling network, that is often an element in large, more complex coupling networks. Comparisons between results from the signal flow graph and the traditional transmission line model are provided.

Original languageEnglish (US)
Article number5165077
Pages (from-to)935-938
Number of pages4
JournalIEEE Antennas and Wireless Propagation Letters
StatePublished - 2009


  • Antenna input impedance
  • Coupling circuits
  • Microstrip antennas
  • Modeling

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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