Title :
A highly directive dipole antenna embedded in a Fabry-Perot type cavity
Author :
Akalin, T. ; Danglot, J. ; Vanbésien, O. ; Lippens, D.
Author_Institution :
Inst. d´´Electronique et de Microelectronique du Nord, Univ. de Lille, France
Abstract :
We investigate the origin of the directivity of a dipole antenna embedded in a dielectric slab Fabry-Perot cavity. It is shown that the focusing effect is due to the angular selection rules in the Bragg-type mirror and is directly correlated to the frequency selectivity of the cavity. For a 6 GHz resonant device, having a quality factor of 100, the aperture of the beam pattern (E-H plane) is close to 12/spl deg/ in agreement with the arguments based on frequency and angular selectivities. Hence, this kind of cavity could be used in free-space based communication links.
Keywords :
Fabry-Perot resonators; Q-factor; antenna radiation patterns; dipole antennas; directive antennas; microwave antennas; microwave photonics; mirrors; photonic band gap; 6 GHz; Bragg-type mirror; Fabry-Perot type cavity; angular selection rules; beam pattern aperture; dielectric slab; dipole antenna; electromagnetic simulations; evanescence; focusing effect; free-space based communication links; frequency selectivity; highly directive antenna; quality factor; quasi-one dimensional approach; Apertures; Dielectrics; Dipole antennas; Directive antennas; Fabry-Perot; Frequency; Mirrors; Q factor; Resonance; Slabs;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/7260.982873
