Phase centre of Fabry-Pérot Cavity antennas: Leaky-wave model and analytical formulas

Author

Burghignoli, Paolo

Author_Institution

Dept. of Inf. Eng., Electron. & Telecommun., Sapienza Univ. of Rome, Rome, Italy

fYear

2012

fDate

26-30 March 2012

Firstpage

239

Lastpage

242

Abstract

The phase centre of Fabry-Pérot Cavity antennas radiating broadside pencil beams is studied adopting a leaky-wave model of their radiation mechanism. Different definitions are considered for the phase centre, both local, based on curvature properties of the equiphase surfaces in the far field, and global, based on the minimization of suitable functionals of the antenna phase pattern. Analytical formulas are derived for the phase-center location as a function of the relevant leaky-mode attenuation constant and are validated on specific examples of antennas.

Keywords

antenna radiation patterns; leaky wave antennas; reflector antennas; Fabry-Perot cavity antennas; analytical formulas; antenna phase pattern; broadside pencil beams radiation; curvature properties; equiphase surfaces; leaky-mode attenuation constant; leaky-wave model; phase-center location; radiation mechanism; Antenna radiation patterns; Attenuation; Cavity resonators; Dipole antennas; Reflector antennas; Substrates; Fabry-Pérot Cavity antennas; leaky-wave antennas; phase centre; phase pattern; reflector antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (EUCAP), 2012 6th European Conference on

Conference_Location

Prague

Print_ISBN

978-1-4577-0918-0

Electronic_ISBN

978-1-4577-0919-7

Type

conf

DOI

10.1109/EuCAP.2012.6206112

Filename

6206112