An antenna for a portable radio communication device

Details An antenna for a portable radio communication device An antenna for a portable radio communication device

H - Electricity

01

Q

H01Q 1/24 (2006.01) H01Q 19/09 (2006.01) H04B 1/40 (2006.01) H04Q 7/32 (2006.01)

Patent

CA 2209019

An improved antenna for a portable radio communication device including a first elongate electrically conductive member (10) having opposed first and second ends, the first end adapted to be mounted in electrical communication to a radio communication device (18). A radiation field pattern is generated by radiation emitted by the first elongate electrically conductive member (10) and the radio communication device (18) during radio transmission, the radiation field pattern having maximum intensity at a first location. Means (24) for increasing radiation resistance is mounted to the first electrically conductive member at an optimized position at generally the second end of the first member, whereby the radiation field pattern maximum intensity is shifted from the first location to a second location closer to the second end of the elongate member (10), and near field intensity of the radiation field pattern at the first location is reduced over an operational bandwidth of the radio communication device (18).

Une antenne perfectionnée pour dispositif de communication radio portable comprend un premier élément allongé électroconducteur (10) comprenant des première et seconde extrémités opposées, la première extrémité étant conçue pour être montée en communication électrique sur un dispositif de communication radio. Un diagramme de champ de rayonnement est généré par le rayonnement émis par le premier élément électroconducteur allongé (10) et le dispositif de communication radio (18) lors de la transmission radio, le diagramme de champ de rayonnement ayant une intensité maximale en un premier point. Un dispositif (24) destiné à augmenter la résistance de rayonnement est monté sur le premier élément électroconducteur en un point optimalisée au niveau généralement de la seconde extrémité du premier élément, le diagramme de champ de rayonnement étant déplacé du premier point vers un second point plus proche de la seconde extrémité, de l'élément allongé (10) du champ proche du diagramme de champ de rayonnement est réduit sur une largeur de bande opérationnelle du dispositif de communication radio (18).

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