Antenna module and communication device
An antenna module that includes a bent portion and a first flat portion. The first flat portion has a connection surface connected to the bent portion, a back surface intersecting the connection surface, a power feed pad connected to a flexible cable, a first ground electrode, and a radiating element. The first ground electrode is connected to a second ground electrode of the bent portion on the connection surface and is connected to the power feed pad.
1 . An antenna module comprising:
a bent portion in which a first power feed line and a first ground electrode are disposed in a bent state; and
a first flat portion connected to the bent portion,
wherein the first flat portion has
a connection surface connected to the bent portion,
an intersection surface intersecting the connection surface,
a side surface that differs from the connection surface and the intersection surface,
an external terminal disposed on the intersection surface or the side surface,
a second ground electrode that extends along the intersection surface and is connected to the first ground electrode and the external terminal, and
a radiating element that is disposed to face the second ground electrode and is connected to the first power feed line, and
the radiating element radiates a radio wave in a first frequency band by receiving electric power through the first power feed line, and
the second ground electrode radiates a radio wave in a second frequency band lower than the first frequency band by receiving electric power through the external terminal.
2 . The antenna module according to claim 1 ,
wherein the intersection surface is located closer to an inner periphery of the bent portion than the connection surface.
3 . The antenna module according to claim 2 ,
wherein the second ground electrode has a rectangular shape having a longitudinal direction and a lateral direction as viewed in a normal direction of the intersection surface, and
the bent portion includes
a first bent portion on which a ground electrode connected to one end portion of the second ground electrode in the longitudinal direction is disposed, and
a second bent portion on which a ground electrode connected to another end portion of the second ground electrode in the longitudinal direction is disposed.
4 . The antenna module according to claim 3 ,
wherein the second ground electrode is connected to the external terminal in a portion located substantially centrally in the longitudinal direction and in the lateral direction.
5 . The antenna module according to claim 2 ,
wherein the second ground electrode has a rectangular shape having a longitudinal direction and a lateral direction as viewed in a normal direction of the intersection surface, and
the first ground electrode is connected to one end portion of the second ground electrode in the longitudinal direction.
6 . The antenna module according to claim 5 ,
wherein the second ground electrode is connected to the external terminal in a region closer to the bent portion than a portion located centrally in the longitudinal direction.
7 . A communication device comprising:
the antenna module according to claim 6 .
8 . The communication device according to claim 7 , further comprising:
a second power feed line; and
a plate-shaped member,
wherein the antenna module further includes a second flat portion connected to the first flat portion via the bent portion,
the plate-shaped member has
a main surface facing the second flat portion, and
a side surface intersecting the main surface,
the external terminal of the first flat portion faces the side surface of the plate-shaped member, and
the second power feed line extends along the side surface of the plate-shaped member in a region between the plate-shaped member and the first flat portion.
9 . The communication device according to claim 8 ,
wherein the external terminal and the second power feed line are electrically connected to each other by a spring contact.
10 . The communication device according to claim 9 , further comprising:
a power feed circuit disposed between the second flat portion and the main surface of the plate-shaped member, the power feed circuit supplying electric power to the first power feed line of the bent portion.
11 . The communication device according to claim 10 ,
wherein the communication device has a flat plate shape, and
the first flat portion is disposed on the side surface of the communication device.
12 . The antenna module according to claim 11 ,
wherein the second ground electrode is connected to the external terminal in a portion located substantially centrally in the longitudinal direction and in the lateral direction.
13 . The antenna module according to claim 12 ,
wherein the second ground electrode is connected to the external terminal in a region closer to the bent portion than a portion located centrally in the longitudinal direction.
14 . The communication device according to claim 13 ,
wherein the communication device has a flat plate shape, and
the first flat portion is disposed on the side surface of the communication device.
15 . The communication device according to claim 9 ,
wherein the communication device has a flat plate shape, and
the first flat portion is disposed on the side surface of the communication device.
16 . The communication device according to claim 8 , further comprising:
a power feed circuit disposed between the second flat portion and the main surface of the plate-shaped member, the power feed circuit supplying electric power to the first power feed line of the bent portion.
17 . The communication device according to claim 8 ,
wherein the communication device has a flat plate shape, and
the first flat portion is disposed on the side surface of the communication device.
18 . The communication device according to claim 7 ,
wherein the communication device has a flat plate shape, and
the first flat portion is disposed on the side surface of the communication device.
19 . The antenna module according to claim 1 ,
wherein the second ground electrode has a rectangular shape having a longitudinal direction and a lateral direction as viewed in a normal direction of the intersection surface, and
the bent portion includes
a first bent portion on which a ground electrode connected to one end portion of the second ground electrode in the longitudinal direction is disposed, and
a second bent portion on which a ground electrode connected to another end portion of the second ground electrode in the longitudinal direction is disposed.
20 . A communication device comprising:
the antenna module according to claim 19 .
21 . The antenna module according to claim 1 ,
wherein the second ground electrode has a rectangular shape having a longitudinal direction and a lateral direction as viewed in a normal direction of the intersection surface, and
the first ground electrode is connected to one end portion of the second ground electrode in the longitudinal direction.