| 主权项 |
1. An antenna apparatus of an inverted-F antenna comprising:
a first antenna element of a loop antenna, having one end connected to a first feeding point and another end connected to a grounding conductor formed on a dielectric substrate, and resonating at a predetermined first wavelength; and a second antenna element having one end connected to a predetermined connecting portion of the first antenna element and another end of an open end, wherein the inverted-F antenna resonates at a predetermined second wavelength longer than the first wavelength, wherein the first antenna element includes a first element portion formed to have a predetermined first height from a surface of the dielectric substrate, andwherein the second antenna element includes a second element portion which is formed to have the first height from the surface of the dielectric substrate, and is formed to be substantially parallel to the first element portion at a predetermined distance apart from the first antenna element,
wherein the first antenna element comprises:
a first strip conductor, that has one end connected to the first feeding point, and extends in a predetermined first direction from the one end of the first strip conductor on the dielectric substrate;a second strip conductor, that has one end connected to another end of the first strip conductor, and extends from the one end of the second strip conductor in a predetermined second direction perpendicular to the surface of the dielectric substrate;a third strip conductor, that has one end connected to another end of the second strip conductor, and extends from the one end of the third strip conductor in a direction opposite to the first direction;a fourth strip conductor, that has one end connected to another end of the third strip conductor, and extends from the one end of the fourth strip conductor in a third direction perpendicular to the first and second directions;a fifth strip conductor, that has one end connected to another end of the fourth strip conductor, and extends from the one end of the fifth strip conductor to the surface of the dielectric substrate in a direction opposite to the second direction; anda sixth strip conductor, that has one end connected to another end of the fifth strip conductor and another end connected to the grounding conductor, wherein the second antenna element comprises:a seventh strip conductor, that has one end connected to a connecting point between the second and third strip conductors, and extends from the one end of the seventh strip conductor in the third direction;an eighth strip conductor, that has one end connected to another end of the seventh strip conductor, and extends from the one end of the eighth strip conductor to the surface of the dielectric substrate in a direction opposite to the second direction; anda ninth strip conductor, that has one end connected to another end of the eighth strip conductor, and extends from the one end of the ninth strip conductor to the open end in a direction opposite to the third direction, wherein the first element portion is the fourth strip conductor, and wherein the second element portion is the seventh strip conductor. |
