Microstrip wide band antenna and radome

H - Electricity – 01 – Q

Patent

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Details

H01Q 1/38 (2006.01) H01Q 1/42 (2006.01) H01Q 3/02 (2006.01) H01Q 9/04 (2006.01)

Patent

CA 2251245

A Radio Frequency (RF) microstrip antenna employs a planar or curved radiator element (302) that is mounted or supported in spaced relation to a planar or curved ground plane element (304). An RF feed is attached near one edge of the radiator element for receiving and/or transmitting RF signals in a lobe that is substantially perpendicular to the ground plane element. The radiator element and the ground plane element are maintained in a converging, inclined or tilted physical relationship. When a coaxial cable (303) is employed as the antenna feed, the cable's outer insulating is secured to the ground plane element, the cable's center conductor extends away from the ground plane element to provide signal feed to the radiator element and to provide physical support for one edge of the radiator element, and two insulator posts (325, 326) extend away from the ground plane element to provide support for the opposite edge of the radiator element. A two-piece, snap-together, radome (301) is provided, wherein a bottom half (300) nonmovably supports the feed line and ground element and adjustably supports the inclined radiating element, wherein a top half (305) snap-fits to the bottom half, and wherein the top half includes internal extending tabs that engage edge portions of the ground plane member.

Une antenne microruban hautes fréquences utilise un élément rayonnant (302) plat ou courbe qui est monté sur un élément de tapis de sol plan ou courbe (304) ou qui est tenu espacé de ce tapis. Une alimentation hautes fréquences est fixée près d'un bord de l'élément rayonnant pour recevoir et/ou émettre des signaux hautes fréquences dans un lobe qui est sensiblement perpendiculaire à l'élément de tapis de sol. L'élément rayonnant et l'élément de tapis de sol sont tenus dans une position mutuelle convergente, oblique ou inclinée. Quand on utilise un câble coaxial (303) pour l'alimentation de l'antenne, l'isolation externe du câble est fixée à l'élément de tapis de sol, le conducteur central du câble s'éloigne de l'élément de tapis de sol pour fournir le signal d'alimentation à l'élément rayonnant et pour assurer le support physique d'un bord de l'élément rayonnant et deux éléments verticaux isolants (325, 326) partent de l'élément de tapis de sol pour assurer le support du bord opposé de l'élément rayonnant. Le système comporte un radôme (301) en deux parties s'encliquetant ensemble. La moitié inférieure (300) du radôme supporte de manière non mobile la ligne d'alimentation et l'élément de tapis au sol et elle supporte de manière ajustable l'élément rayonnant incliné. La moitié supérieure (305) s'encliquette sur la moitié inférieure. La moitié supérieure comprend des languettes s'étendant vers l'intérieur pour s'engager avec les portions de bord de l'élément de tapis de sol.

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