H - Electricity – 01 – Q
Patent
H - Electricity
01
Q
H01Q 1/36 (2006.01) H01Q 9/04 (2006.01) H01Q 19/00 (2006.01)
Patent
CA 2181887
In a microstrip antenna device which has a radiating patch 11 and a ground plate disposed opposite and in parallel to each other, a metal plate 21 is provided on the ground plate in the vicinity of at least one of opposite marginal edges of the radiating patch 11 in the direction of resonance to form an additional capacitance between an open end of the radiating patch in the direction of resonance and the ground plate, thereby permitting reduction of the antenna length.
L'invention concerne une antenne microruban dotée d'une plaque conductrice rayonnante (11) et d'une plaque conductrice de terre (12) qui sont disposées en opposition mutuelle. Une plaque métallique (21) est placée sur la plaque conductrice de terre dans une zone qui se trouve à proximité d'au moins un bord dans la direction de résonance de la plaque conductrice rayonnante (11), de manière à engendrer une capacité additionnelle entre l'extrémité ouverte de la plaque conductrice rayonnante dans la direction de résonance et la plaque conductrice de terre, et ainsi, de manière à raccourcir la longueur de l'antenne.
Hagiwara Seiji
Tsunekawa Koichi
Kirby Eades Gale Baker
Ntt Mobile Communications Network Inc.
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