Patent ID: 7924227

Claim:
A wireless communication device, comprising: a high frequency circuit for generating a high frequency signal, the high frequency circuit being provided on one surface of an integrated antenna module substrate mounted on a mounting substrate; a patch antenna for irradiating radio waves indicative of the generated high frequency signal, the patch antenna being provided on the other surface of the integrated antenna module substrate; and a ring-shaped grounding section provided on the other surface of the integrated antenna module substrate so as to surround the patch antenna, wherein the integrated antenna module substrate includes (i) a through-hole extending from a position directly under the patch antenna to the high frequency circuit and (ii) a plurality of first through-holes formed right under the ring-shaped grounding section, and the plurality of first through-holes is formed with an interval of not more than ⅛ of in-substrate wavelength of the radio waves irradiated from the patch antenna.