Antenna module, communication device equipped with the same, and manufacturing method of antenna module
An antenna module includes a dielectric substrate and a radiation element disposed on the dielectric substrate. The dielectric substrate includes a flat portion ( 131 ) and a flat portion ( 130 ) having mutually different normal directions, and a bent portion connecting the flat portion ( 131 ) and the flat portion ( 130 ) to each other. The flat portion ( 131 ) has a protruding portion partially protruding in a direction toward the flat portion ( 130 ) along the flat portion ( 131 ) from a boundary portion between the bent portion and the flat portion ( 131 ). The flat portion ( 131 ) and the bent portion are connected to each other at a position where the protruding portion is not provided in the flat portion ( 131 ). At least a part of the radiation element is disposed on the protruding portion.
1. An antenna module comprising:
a dielectric substrate; and
a first radiation element on the dielectric substrate, wherein
the dielectric substrate includes
a first flat portion and a second flat portion having mutually different normal directions, and
a first bent portion connecting the first flat portion and the second flat portion,
the first flat portion has a first protruding portion partially protruding in a direction toward the second flat portion along the first flat portion from a boundary portion between the first bent portion and the first flat portion,
the first flat portion and the first bent portion are connected to each other at a position where the first protruding portion is not provided in the first flat portion, and
at least a part of the first radiation element is on the first protruding portion.
2. The antenna module according to claim 1 , wherein
the second flat portion includes
a first surface, and
a second surface positioned opposite to the first surface and closer to the first flat portion than the first surface, and
the first protruding portion extends from the boundary portion between the first bent portion and the first flat portion to a position exceeding the second surface.
3. The antenna module according to claim 2 , wherein
a thickness of the first bent portion is smaller than a thickness of the first flat portion.
4. The antenna module according to claim 1 , wherein
a thickness of the first bent portion is smaller than a thickness of the first flat portion.
5. The antenna module according to claim 1 , wherein
a thickness of the first flat portion is equal to a thickness of the second flat portion.
6. The antenna module according to claim 1 , further comprising:
a power supply wiring configured to transmit a radio frequency signal to the first radiation element, wherein
the power supply wiring is connected to a power supply point of the first radiation element, and
the boundary portion between the first bent portion and the first flat portion is positioned in a direction toward the first protruding portion with respect to the power supply point.
7. The antenna module according to claim 1 , further comprising:
a second radiation element on the first flat portion.
8. The antenna module according to claim 7 , wherein
the first flat portion further includes
a second protruding portion partially protruding in a direction toward the second flat portion along the first flat portion from the boundary portion between the first bent portion and the first flat portion, and
at least a part of the second radiation element is on the second protruding portion.
9. The antenna module according to claim 7 , wherein
the first radiation element and the second radiation element are on the first protruding portion.
10. The antenna module according to claim 1 , further comprising:
a third radiation element on the second flat portion.
11. The antenna module according to claim 10 , wherein
the second flat portion includes
a third protruding portion partially protruding in a direction toward the first flat portion along the second flat portion from a boundary portion between the first bent portion and the second flat portion,
the second flat portion and the first bent portion are connected to each other at a position where the third protruding portion is not provided in the second flat portion, and
at least a part of the third radiation element is on the third protruding portion.
12. The antenna module according to claim 1 , wherein
the dielectric substrate further includes
a third flat portion having a normal direction different from the normal directions of the first flat portion and the second flat portion, and
a second bent portion connecting the second flat portion and the third flat portion,
the third flat portion includes
a fourth protruding portion partially protruding in a direction toward the second flat portion along the third flat portion from a boundary portion between the second bent portion and the third flat portion, and
the third flat portion and the second bent portion are connected to each other at a position where the fourth protruding portion is not provided in the third flat portion,
the antenna module further comprising:
a fourth radiation element on the third flat portion.
13. An antenna module comprising:
a dielectric substrate; and
a radiation element on the dielectric substrate, wherein
the dielectric substrate includes
a first flat portion and a second flat portion having mutually different normal directions, and
a first bent portion connecting the first flat portion and the second flat portion,
the first flat portion has a first protruding portion partially protruding in a direction toward the second flat portion along the first flat portion from a boundary portion between the first bent portion and the first flat portion,
the first flat portion and the first bent portion are connected to each other at a position where the first protruding portion is not provided in the first flat portion, and
the radiation element is at a position other than the first protruding portion in the first flat portion.
14. The antenna module according to claim 1 , further comprising:
a power supply circuit configured to supply a radio frequency signal to each radiation element.
15. A communication device comprising:
the antenna module according to claim 1 .