Patent ID: 7629942
Filing Date: 2009-12-08
Classification: H01Q

Abstract:
1. An antenna comprising: first and second power supply terminals; and a plurality of resonant circuits; a first LC series resonant circuit including a first inductance element and first and second capacitance elements that are electrically connected to both ends of the first inductance element; and a second LC series resonant circuit including a second inductance element and third and fourth capacitance elements that are electrically connected to both ends of the second inductance element; wherein the first and second inductance elements are magnetically coupled together; one end of the first inductance element is electrically connected to the first power supply terminal via the first capacitance element, and the other end is electrically connected to the second power supply terminal via the second capacitance element; and one end of the second inductance element is electrically connected to the first power supply terminal via the third and first capacitance elements, and the other end is electrically connected to the second power supply terminal via the fourth and second capacitance elements.