INVERTED-F ANTENNA AND VEHICLE-MOUNTED COMPOSITE ANTENNA DEVICE

摘要

An inverted-F antenna includes a ground member, a first antenna member including a short-circuit portion rising perpendicularly from the ground member while being electrically coupled with the ground member, a flat plate portion extending from a top end of the short-circuit portion while being electrically coupled with the short-circuit portion, and a protrusion portion protruding from a part of an end of the flat plate portion; and a second antenna member including a conductor pattern that includes a power supply portion at one end portion thereof, has a width increasing toward an opposite end, and is electrically coupled with the flat plate portion. The second antenna member is located between the ground member and the flat plate portion with a predetermined distance from an end of the flat plate portion opposite to the protrusion portion.

主权项

1. An inverted-F antenna, comprising:
a ground member; a first antenna member including a short-circuit portion rising perpendicularly from the ground member while being electrically coupled with the ground member, a flat plate portion extending parallel to the ground member from a top end of the short-circuit portion while being electrically coupled with the short-circuit portion, and a protrusion portion located in the same horizontal plane as that of the flat plate portion and extending in a direction perpendicular to a longitudinal direction of the flat plate portion; a second antenna member including a conductor pattern, the conductor pattern including a power supply portion at one end portion thereof, having a width increasing toward an opposite end, and being electrically coupled with the flat plate portion; and the second antenna member is located between the ground member and the flat plate portion with a predetermined distance from an end of the flat plate portion opposite to the protrusion portion.