Internally Excited Fabry-Perot Type Cavity: Power Normalization and Directivity Evaluation

Halim Boutayeb (1) , Tayeb Denidni (1)

1 EMT-INRS - Énergie Matériaux Télécommunications - INRS

This letter presents a new approach to analyze Fabry-Perot cavities excited from their inside by electromagnetic waves. While Fabry-Perot cavity antennas found in literature use often the magnitude of the transmission coefficient to determine the antenna directivity, the proposed approach suggests a new strategy that uses a normalized transmission coefficient, which is derived by using a transmission line model and by considering the available power from the source. Furthermore, a new analytical expression is also proposed for evaluating the directivity. The obtained results are presented and compared to experimental results reported in literature.

Mots clés: Fabry-Perot cavity; directive antennas

Domaines: Electromagnétisme

Halim Boutayeb, Tayeb Denidni. Internally Excited Fabry-Perot Type Cavity: Power Normalization and Directivity Evaluation. IEEE Antennas and Wireless Propagation Letters, 2006, 5 (1), pp. 159-162. ⟨10.1109/LAWP.2006.873944⟩. ⟨hal-00149264⟩