Wireless communication device
AssigneeSharp Kabushiki Kaisha
InventorAtsushi Yamada
Life of this patent
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Abstract
A wireless communication device includes: a high frequency circuit for generating a high frequency signal, the high frequency circuit being provided on a high-frequency-circuit 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 an antenna surface of the integrated antenna module substrate; and a ring-shaped grounding surface provided on the antenna surface of the integrated antenna module substrate so as to surround the patch antenna. This allows reducing surface waves irradiated from the end of the integrated antenna module substrate and improving antenna characteristics.
Claims15
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.
A wireless communication device, comprising:
- a high frequency circuit for generating a high frequency signal, the high frequency circuit 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 provided on another surface of the integrated antenna module substrate;
- a ring-shaped grounding section provided on the another surface of the integrated antenna module substrate so as to surround the patch antenna, wherein
- the integrated antenna module substrate includes, as its internal layer, an internal layer bottom board with which a ground is connected,
- the ring-shaped grounding section is connected with the internal layer bottom board via first through-holes, and
- the integrated antenna module substrate has a plurality of cycle structures that are provided between the patch antenna and the ring-shaped grounding section on the another surface so as to surround the patch antenna.
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 ring-shaped grounding section is formed away from end of the integrated antenna module substrate,
- a gap between the patch antenna and the ring-shaped grounding section is greater than or equal to one half a wavelength of the radio waves irradiated by the patch antenna, and
- the integrated antenna module substrate includes a plurality of first through-holes formed right under the ring-shaped grounding section, the plurality of first through-holes being formed with an interval of not more than ⅛ of in-substrate wavelength of the radio waves irradiated from the patch antenna.
Dependencies are inferred from the claim text.