Tri-band multi-mode antenna

摘要

An antenna resonant in two or more frequency bands. The antenna comprises three parallel conductive plates disposed in a stacked orientation, with a first dielectric layer interposed between the bottom and the middle conductive plates and a second dielectric layer interposed between the middle and the top conductive plates. The middle conductive plate is smaller than the bottom and top conductive plates. A signal feed is connected to the top and the middle conductive plates; a first shorting pin is connected between the bottom and top conductive plates and a second shorting pin is connected between the middle and the bottom conductive plate.