| 摘要 |
PURPOSE:To attain the miniaturization and a low position of the titled antenna by providing an additional conductor plate set opposite to a radiation conductor element with a fixed space and a short circuit conductor which secures connection between a point of the additional conductor plate and a point of the rariation conductor element and supplying the electric power to the conductor element or the conductor plate via a feeder. CONSTITUTION:A plate type radiation conductor element 12 is set in parallel to an earth conductor plate 1 with a fixed space h1. In addition, a short circuit pin 4 securing the contact between a point of the periphery of the element 12 and the plate 1 is provided together with a feeder 3 connected to a feed point 8 of the element 12, an additional conductor plate 9 set opposite to the element 12 with a fixed space and a short circuit conductor 10 connecting a point of the periphery of the plate 9 to a point of the opposite element 12. In such a constitution, the electric power is supplied to the point 8 through the coaxial feeder 3 and the element 12 is energized to flow the current to its fringe part. Then the power is supplied to the plate 9 via the conductor 10 owing to the potential generated at a point on said fringe part. Thus the plate 9 serves as a radiation element. This increases the band of the impedance characteristics. |
