Tunable inverted f antenna

H - Electricity – 01 – Q

Patent

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Details

H01Q 9/04 (2006.01) H04W 4/00 (2009.01) G08B 25/10 (2006.01) H01Q 1/38 (2006.01)

Patent

CA 2754078

A planar antenna includes a ground plane on a substrate, a radiating element coupled to the ground plane on the substrate, and a feed line. An impedance tap point is defined by a connection between the feed line and the radiating element and the length of the radiating element defines the resonant frequency of the antenna. A first portion of the radiating element includes an impedance adjustment mechanism for defining the impedance tap point of the antenna and consequently the impedance of the antenna. A second portion of the radiating element includes a frequency adjustment section which adjusts the length of said radiat-ing element and consequently the resonant frequency of the antenna.

L'invention porte sur une antenne plane qui comprend un plan de masse sur un substrat, un élément rayonnant couplé au plan de masse sur le substrat et une ligne d'alimentation. Un point de prise d'impédance est défini par une connexion entre la ligne d'alimentation et l'élément rayonnant et la longueur de l'élément rayonnant définit la fréquence de résonance de l'antenne. Une première partie de l'élément rayonnant comprend un mécanisme d'ajustement d'impédance pour définir le point de prise d'impédance de l'antenne et en conséquence l'impédance de l'antenne. Une seconde partie de l'élément rayonnant comprend une section d'ajustement de fréquence qui ajuste la longueur dudit élément rayonnant et en conséquence la fréquence de résonance de l'antenne.

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