Patent ID: 6703985
Filing Date: 2004-03-09
Classification: H01Q

Abstract:
An antenna comprising:an insulating substrate; a first conductive layer formed on the top surface of the insulating substrate, the first conductive layer having a predetermined width from the front end of the insulating substrate to the rear end thereof; a second conductive layer formed on the bottom surface of the insulating substrate; and first and second conductive plates, wherein the rear end of the first conductive plate is attached to the first conductive layer, the rear end of the second conductive plate is attached to the second conductive layer, and the front ends of the first and second conductive plates are parallel to and separated from each other, wherein the second conductive layer is partitioned into a feed and an impedance matching portion, wherein the feed is formed in a rectangular shape at the rear end of the insulating substrate, and wherein the impedance matching portion has a substantially trapezoidal shape with a front side having the same width as that of the first conductive layer and coupled to the second conductive plate, a rear side coupled to the feed, and two oblique sides formed to have a predetermined curvature.