Antenna apparatus

H - Electricity – 01 – Q

Patent

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Details

H01Q 1/36 (2006.01) H01Q 1/32 (2006.01) H01Q 3/02 (2006.01) H01Q 9/04 (2006.01)

Patent

CA 2204326

In an antenna apparatus in which n dielectric layers .epsilon. ~-.epsilon.~ in dielectric constant are respectively stacked between a ground plate and a major radiating conductor, the thicknesses t~-t~ of the dielectric layers are determined so as to satisfy substantially the following equations: (t~ + t~ + ... + t~)/ (t~/.epsilon.~ + t~ /.epsilon.~ + ... + t~/.epsilon.~ ) = .epsilon.~, and t~ + t~ + ... + t~ = t~ with respect to a dielectric constant .epsilon.~ of the antenna defined from a desired beam width, and the minimum value t~ of the dielectric layer capable of ensuring desired operation band and low reflection losses in this dielectric constant .epsilon.~.

L'invention est une antenne comportant n couches diélectriques de constantes diélectriques 1, 2,... n empilées entre une plaque de sol et un conducteur rayonnant, les épaisseurs t1, t2,... tn des couches diélectriques étant déterminées de façon à satisfaire approximativement les équations (t1 + t2 +... + tn)/(t1/ 1, + t2/ 2 + ... + tn/ n) = mettant en cause la constante diélectrique de l'antenne définie pour une largeur de faisceau désirée et l'épaisseur minimale tmin de la couche diélectrique pouvant procurer la bande de fonctionnement désirée avec de faibles pertes par réflexion avec la constante diélectrique .

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