Patent ID: 8054227

Claim:
A chip antenna, comprising: a dielectric block shaped as a rectangular parallelepiped and having opposing top and bottom surfaces and first through fourth side surfaces connecting the top and bottom surfaces, wherein the second side surface is opposing the first side surface of the dielectric block; a first conductive pattern formed on the first side surface of the dielectric block to connect to an external feeding part; a second conductive pattern formed across the second side surface and the top surface of the dielectric block, the second conductive pattern being spaced apart from the first conductive pattern at a certain distance so as to be capacitively coupled to the first conductive pattern to define a radiator, the second conductive pattern having one end to be connected to an external ground part; and a third conductive pattern formed on the bottom surface of the dielectric block, the third conductive pattern being spaced apart from the first conductive pattern at a certain distance so as to be capacitively coupled to the first conductive pattern to enable impedance matching of the antenna, the third conductive pattern having a lower end to be connected to the external ground part, wherein a coupling capacitance between the first and second conductive patterns is greater than a coupling capacitance between the first and third conductive patterns, wherein a resonant frequency of the antenna depends on a length of the third conductive pattern, thereby enabling a variation in the length of the third conductive pattern to adjust impedance matching of the antenna and to result in a corresponding variation in the resonant frequency of the antenna, and wherein the coupling capacitance between the first and third conductive patterns is greater than a coupling capacitance between the second and third conductive patterns.