To provide an antenna apparatus having high reliability without applying a stress
to a portion of a grounding spring bonded with an LNA board.
An antenna unit 3 is mounted on one race of an antenna board 4 and
an LNA board 1 is mounted on other face of the antenna board 4 and
attached with a shield case 6 to cover the LNA board 1. The LNA board
1 is attached with a grounding spring 5 such that a front end thereof
is brought into contact with an inner face of the shield case 6. The grounding
spring is a grounding spring of a press spring type a base end portion which is
pressed to a side of the LNA board 1 by a press force exerted to the front
end. When the front end of the grounding spring 5 is brought into press
contact with the inner face of the shield case 6 by an elastic force, the
press force is operated to press the base end portion of the grounding spring 5
to the side of the LNA board 1.
