Wideband arrayable planar radiator

Details Wideband arrayable planar radiator Wideband arrayable planar radiator

H - Electricity

01

Q

H01Q 13/10 (2006.01) H01Q 13/08 (2006.01)

Patent

CA 2093161

This invention discloses an antenna element (12) or an array of antenna elements (52) for use in multifunctional systems which exhibits wide bandwidth, small size, polarization diversity and conformality. In one preferred embodiment, an array of circular conductive patches (56,58) are formed on a dielectric substrate (54) in which adjacent patches are formed on opposite sides of the substrate (54). Each of the opposite conducting patches (56,58) are configured to form a dual flared slotline such that an electric field created between the two conductive patches (56,58) will exhibit a wide range of impedance matching to free space. By exciting the conductive patches (56,58), radiating electromagnetic waves having a polarization with respect to the orientation of the slotlines is produced. By this, a single array of antenna elements (52) can be used in a multifunctional system.

Élément d'antenne (12) ou réseau d'éléments d'antenne (52) pour systèmes polyvalents. Comporte les caractéristiques suivantes : large bande passante, petite taille, diversité de polarisation et conformité. Dans une version préférée, un réseau de plaques circulaires conductrices (56, 58) est formé sur un substrat diélectrique (54) ayant des plaques adjacentes sur ses côtés opposés. Chacune des plaques conductrices opposées (56, 58) est configurée pour former une ligne microfente à deux cornets de telle sorte qu'un champ électrique créé entre les deux plaques conductrices (56, 58) présentera une large plage d'impédance correspondant à l'espace libre. En excitant les plaques conductrices (56, 58), des rayonnements électromagnétiques ayant une polarisation conforme à l'orientation des microfentes sont produits. Ainsi, un réseau unique d'éléments d'antenne (52) peut être utilisé dans un système polyvalent.

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