Electronic device
An electronic device includes a radiator, a feed point, and a ground point. The plurality of radiators include a first radiator, a second radiator, and a third radiator. A first end of the first radiator and a first end of the second radiator are opposite to each other, and form a first gap. A second end of the first radiator and a first end of the third radiator are opposite to each other, and form a second gap. The feed point and the ground point are disposed on the first radiator. The ground point is disposed in a central region of the plurality of radiators or the first radiator, and the feed point is disposed between the central region and the first end of the first radiator. Gaps are formed between a plurality of radiators, so that a broadband antenna can be implemented.
1 . An electronic device, comprising:
a printed circuit board comprising a first dielectric board and a second dielectric board that are disposed in a stacked manner;
a feed point and a ground point; and
a plurality of radiators comprising a first radiator, a second radiator, and a third radiator, wherein
a first end of the first radiator and a first end of the second radiator are opposite to each other, and form a first gap;
a second end of the first radiator and a first end of the third radiator are opposite to each other, and form a second gap;
the feed point and the ground point are disposed on the first radiator;
the ground point is disposed in a central region of the first radiator or the plurality of radiators;
the feed point is disposed between the central region and the first end of the first radiator;
in response to an electrical signal being fed at the feed point, the first radiator, the second radiator, and the third radiator jointly generate at least one resonance; and
the first radiator is disposed between the first dielectric board and the second dielectric board, the second radiator is disposed on an upper surface of the first dielectric board, and the third radiator is disposed on a lower surface of the second dielectric board.
2 . The electronic device according to claim 1 , wherein the second radiator and the third radiator have a same length.
3 . The electronic device according to claim 1 , wherein the first gap and the second gap have a same width.
4 . The electronic device according to claim 1 , wherein neither a feed point nor a ground point is disposed on the second radiator and the third radiator.
5 . The electronic device according to claim 1 , wherein the at least one resonance comprises a first resonance, a second resonance, a third resonance, and a fourth resonance.
6 . The electronic device according to claim 5 , wherein resonant frequency bands of any two adjacent resonances of the first resonance, the second resonance, the third resonance, and the fourth resonance partially overlap.
7 . The electronic device according to claim 1 , wherein
the plurality of radiators further comprises a fourth radiator and a fifth radiator, wherein
a first end of the fourth radiator and a second end of the second radiator are opposite to each other, and form a third gap; and
a first end of the fifth radiator and a second end of the third radiator are opposite to each other, and form a fourth gap.
8 . The electronic device according to claim 7 , wherein, in response to an electrical signal is fed at the feed point, the first radiator, the second radiator, the third radiator, the fourth radiator, and the fifth radiator jointly generate the at least one resonance.
9 . The electronic device according to claim 7 , wherein, in response to an electrical signal is fed at the feed point, the first radiator, the second radiator, the third radiator, the fourth radiator, and the fifth radiator jointly generate a first resonance, a second resonance, a third resonance, a fourth resonance, a fifth resonance, and a sixth resonance.
10 . The electronic device according to claim 9 , wherein resonant frequency bands of any two adjacent resonances of the first resonance, the second resonance, the third resonance, the fourth resonance, the fifth resonance, and the sixth resonance partially overlap.
11 . The electronic device according to claim 1 , wherein
the electronic device further comprises a frame, a part of the frame has a first position, a second position, a third position, and a fourth position in sequence, a part of the frame between the first position and the second position is used as the second radiator, a part of the frame between the second position and the third position is used as the first radiator, and a part of the frame between the third position and the fourth position is used as the third radiator;
the first gap is provided at the second position of the frame; and
the second gap is provided at the third position of the frame.
12 . The electronic device according to claim 11 , wherein
a first medium is disposed between the PCB and the first radiator, the second radiator, and the third radiator.
13 . The electronic device according to claim 1 , wherein
a projection of the first end of the first radiator and a projection of the first end of the second radiator in a first direction at least partially overlap, and form the first gap, wherein the first direction is a direction perpendicular to a plane on which the first dielectric board or the second dielectric board is located; and
a projection of the second end of the first radiator and a projection of the first end of the third radiator in the first direction at least partially overlap, and form the second gap.
14 . The electronic device according to claim 1 , wherein a second medium is disposed in the first gap or the second gap.
15 . The electronic device according to claim 1 , wherein the electronic device further comprises a ground element, a first end of the ground element is electrically coupled to the first radiator at the ground point, and a second end of the ground element is grounded.
16 . The electronic device according to claim 15 , wherein the ground element is a capacitor.
17 . The electronic device according to claim 1 , wherein the electronic device further comprises a matching network and a feed unit, a first end of the matching network is electrically connected to the first radiator at the feed point, and a second end of the matching network is electrically connected to the feed unit.