Hybrid Electromagnetic and Non-Linear Modeling and Design of SIW Cavity-Backed Active Antennas

Francesco Giuppi, Apostolos Georgiadis, Maurizio Bozzi, Selva Via, Ana Collado, Luca Perregrini

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


This paper presents the modeling and implementation of planar passive and active cavity-backed antennas in substrate integrated waveguide (SIW) technology. The cavity-backed topology helps suppressing the undesired surface-wave modes and may provide better phase noise performance in the antenna oscillator. The use of SIW technology allows for a compact and cost-effective implementation of the structure. The design of the active antenna involves both electromagnetic full-wave modeling for the radiating structure and nonlinear analysis of the active circuitry through harmonic balance and transient simulations. Single substrate prototypes of both passive and active antennas operating in X band are presented and measured, showing good agreement with simulated results.

Original languageEnglish
Pages (from-to)682-689
Number of pages8
JournalApplied Computational Electromagnetics Society Journal
Issue number8
Publication statusPublished - Aug 2010


  • Active antenna
  • cavity-backed antenna
  • harmonic-balance technique
  • substrate integrated waveguide (SIW)

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