The surface-mount type antenna includes: a substantially rectangular parallelepiped
base body; feeding and ground terminals formed on one side surface of the base
body; and a radiating electrode, to one end of which is connected the ground terminal,
disposed such that its other end extends from one side surface, through another
end side part of one principal surface of the base body, to the one end side part
thereof, then turns to the other end side part; and is eventually formed into an
open end located near the other end side part. The feeding terminal is disposed
near the radiating electrode. The antenna apparatus is constructed by mounting
the surface-mount type antenna on the mounting substrate having the feeding electrode,
the ground electrode, and the ground conductor layer.