Patent ID: 7808440
Filing Date: 2010-10-05
Classification: H01Q

Abstract:
1. A dipole antenna comprising: a plurality of parallel metal wires as a basic structure, wherein the plurality of metal wires have a plurality of identical or similar unit circuits arranged in a row in an extending direction of the metal wires and connected with each other; the unit circuits each have a tie portion that connects the metal wires with each other via at least one first inductor, and at least one first capacitor provided on at least one of the metal wires; the plurality of metal wires each have a base portion and a pair of extended portions; the extended portions extend at an angle of 90 degrees with respect to the base portion, and pass through a middle portion of each of the plurality of metal wires, the middle portion constituting the base portion; the extended portions are symmetric with respect to a symmetric axis perpendicular to the middle portion of each of the plurality of the metal wires; a ratio in length between the base portion and one of the extended portions is 1:n, where n is a positive integer; and resonance is achieved at least two frequencies.