Patent ID: 9548530
Date: 2017-01-17
CPC Classifications: H01Q

Claim:
1. An antenna comprising: a dielectric substrate having predetermined permittivity and having first and second regions sectioned by a central axial line dividing a width dimension; an unbalanced power supply member located on the central axial line and having a non-power supply unit and a power supply unit, the non-power supply unit extending in an axial direction and having predetermined length, and the power supply unit extending forward in the axial direction from the non-power supply unit; a resonance conductor molded into a plate shape having a predetermined area and fixed on one face of the dielectric substrate; a grounding conductor molded into a plate shape having a predetermined area, fixed on one face of the dielectric substrate and continuously coupled to the resonance conductor; and a radiation conductor molded into a plate shape having a predetermined area, fixed on one face of the dielectric substrate, and electrically connected to the power supply unit, wherein the resonance conductor comprises: a connection area electrically connected to the unbalanced power supply member; a first resonance area coupled to the connection area, located in a first region of the dielectric substrate, and extending in the axial direction while separating outward in a width direction from the unbalanced power supply member by a predetermined dimension; and a second resonance area coupled to the connection area, located in a second region of the dielectric substrate, and extending in the axial direction while separating outward in the width direction from the unbalanced power supply member by a predetermined dimension, the grounding conductor comprises: a first ground area located in the first region of the dielectric substrate, and extending backward in the axial direction from the first resonance area while separating outward in the width direction from the unbalanced power supply member by a predetermined dimension; and a second ground area located in the second region of the dielectric substrate, and extending backward in the axial direction from the second resonance area while separating outward in the width direction from the unbalanced power supply member by a predetermined dimension, the radiation conductor comprises: a first radiation area located between the first and the second resonance areas and extending forward in the axial direction from the connection area of the resonance conductor, a rear end portion of the first radiation area being connected to the power supply unit; and a second radiation area extending forward in the axial direction from a front end portion of the first radiation area, a width dimension of the second radiation area being greater than a width dimension of the first radiation area, a plurality of radiation stepped portions denting stepwise forward in the axial direction toward outward in the width direction from the central axial line are formed at a first rear end portion of the second radiation area, facing the front end portion of the first resonance area, and a plurality of radiation stepped portions denting stepwise forward in the axial direction toward outward in the width direction from the central axial line are formed at a second rear end portion of the second radiation area, facing a front end portion of the second resonance area.