Printed circuit board dipole antenna structure with...

H - Electricity – 01 – Q

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Details

H01Q 1/38 (2006.01) H01Q 9/00 (2006.01) H05K 1/16 (2006.01)

Patent

CA 2456379

A printed circuit board antenna structure for the transmission of radio frequency energy. The printed circuit board antenna of the present invention includes a circuit board subassembly having a component mounting section and an antenna section. The antenna section of the circuit board includes a pair of antenna traces that function as two sides of a dipole antenna. Each antenna trace includes a radiating strip where the combination of the pair of radiating strips has a length less than one-half the wavelength of the desired radiation being transmitted. Each antenna trace includes an impedance matching strip having a serpentine structure and coupled to the radiating strip. The impedance matching strip matches the desired impedance for the antenna driving circuit.

Une structure d'antenne de carte à circuit imprimé pour la transmission de l'énergie de fréquences radio. L'antenne de carte à circuit imprimé de la présente invention comprend un sous-assemblage de cartes à circuit ayant une section de composante de montage et une section d'antenne. La section d'antenne de la carte à circuit comprend une paire de traces d'antenne qui fonctionnent comme les deux faces d'une antenne dipôle. Chaque trace d'antenne comprend une bande rayonnante où la combinaison de la paire de bandes rayonnantes a une longueur inférieure à la moitié de la longueur d'onde du rayonnement souhaité transmis. Chaque trace d'antenne comprend une bande d'adaptation d'impédance ayant une structure serpentiforme et accouplée à la bande rayonnante. La bande d'adaptation d'impédance correspond à l'impédance souhaitée pour le circuit de pilotage de l'antenne.

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