Patent ID: 7538737
Filing Date: 2009-05-26
Classification: H01Q

Abstract:
1. An antenna system comprising: a first conductive cone element; a second conductive cone element positioned coaxially with the first conductive cone element to form a bicone antenna having a characteristic impedance greater than 90 ohms; and an impedance matching element operable to transform a characteristic impedance of an external feed line to the characteristic impedance of the bicone antenna, wherein the first conductive cone element has a first half angle of less than about thirty degrees, and the second conductive cone element has a second half angle of less than about thirty degrees, and wherein the first half angle is less than the second half angle, a vertex of the first conductive cone element is truncated to provide an opening in the first conductive cone element, the impedance matching element is positioned within the opening in the first conductive cone element, and the impedance matching element is in electrical communication with the second conductive cone element.