Title :
Annular Cavity Horn Antenna Provides a Fivefold Increase of the Power Density in BEM Experiments in the 60-GHz Band
Author :
Boriskin, Artem V. ; Zhadobov, Maxim ; Le Drean, Yves ; Sauleau, Ronan
Author_Institution :
Inst. d´Electron. et de Telecommun. de Rennes (IETR), Univ. of Rennes 1, Rennes, France
fDate :
7/6/1905 12:00:00 AM
Abstract :
This letter presents a circular horn antenna with annular cavity (CHAAC) optimized for in vitro bioelectromagnetic (BEM) studies in the 60-GHz band. The antenna produces an axisymmetric shaped-beam radiation pattern with the half-power beamwidth of about 70° that enables a highly uniform exposure of biological samples positioned close to the antenna aperture. The comparison to standard waveguide feeds reveals the significant advantages (in terms of the exposure uniformity and incident power density) offered by the CHAAC for BEM experiments at millimeter (mm-) waves. In such a way, a new application area for this class of antennas is demonstrated.
Keywords :
antenna radiation patterns; aperture antennas; boundary-elements methods; horn antennas; BEM experiments; CHAAC; annular cavity horn antenna; antenna aperture; axisymmetric shaped-beam radiation pattern; circular horn antenna with annular cavity; frequency 60 GHz; in vitro bioelectromagnetic; waveguide feeds; Antenna measurements; Antenna radiation patterns; Aperture antennas; Feeds; Horn antennas; 60 GHz; bioelectromagnetics; choke horn antenna; millimeter waves; shaped beam; uniform illumination;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2014.2351780
