Electronic device
Embodiments of this application provide an electronic device. The electronic device includes an antenna structure, the antenna structure includes a plurality of antenna units, and the plurality of antenna units are electrically connected to a ground. When a feed unit feeds the antenna units, the ground bears a part of a mode current.
1. An electronic device, comprising:
a ground;
a first antenna comprising a first end; and
a second antenna comprising a first end and a second end, wherein the second antenna and the first antenna do not contact each other;
wherein a first ground point is disposed at the first end of the first antenna, and the first antenna is electrically connected to the ground at the first ground point;
a second ground point is disposed at the first end of the second antenna, and the second antenna is electrically connected to the ground at the second ground point;
a distance between the second ground point and the first ground point is greater than a distance between the second end of the second antenna and the first ground point;
a feed point is disposed on the first antenna or the second antenna, and the feed point is configured to feed an electrical signal, wherein a distance between the feed point and the first ground point or the second ground point is less than a quarter of a first wavelength, and the first wavelength is an operating wavelength of the electronic device; and
wherein an electrical length of the first antenna is the same as an electrical length of the second antenna.
2. The electronic device according to claim 1 , wherein projections that are of a part of the first antenna and a part of the second antenna and that are on a plane on which the ground is located are parallel with each other in a first direction, and a spacing of the projections in a second direction is less than a quarter of the first wavelength, wherein the first direction is an extension direction of the part of the first antenna and the part of the second antenna, the second direction is perpendicular to the first direction.
3. The electronic device according to claim 2 , wherein the projections that are of the part of the first antenna and the part of the second antenna and that are on the plane on which the ground is located are disposed along a same straight line.
4. The electronic device according to claim 3 , wherein both the first antenna and the second antenna are disposed on a first side of the ground, and at least one of the first antenna and the second antenna is completely projected on the ground in a third direction, wherein the third direction is perpendicular to the plane on which the ground is located.
5. The electronic device according to claim 4 , wherein the first antenna is a metal frame antenna of the electronic device, and the part of the first antenna is a long straight section of the metal frame antenna.
6. The electronic device according to claim 1 , wherein projections that are of a part of the first antenna and a part of the second antenna and that are on a plane on which the ground is located are parallel with each other in a first direction, and an overlapping length of the projections in a second direction is greater than a quarter of the first wavelength, wherein the first direction is an extension direction of the part of the first antenna and the part of the second antenna, the second direction is perpendicular to the first direction.
7. The electronic device according to claim 6 , wherein the projections that are of the part of the first antenna and the part of the second antenna and that are on the plane on which the ground is located completely overlap in the second direction.
8. The electronic device according to claim 1 , wherein projections that are of a part of the first antenna and a part of the second antenna and that are on a plane on which the ground is located are perpendicular to each other, and an extension line of the part of the second antenna intersects with the part of the first antenna on the first antenna.
9. The electronic device according to claim 8 , wherein the extension line of the part of the second antenna intersects with the part of the first antenna at a midpoint of the part of the first antenna.
10. The electronic device according to claim 1 , wherein the first antenna and the second antenna each are one or more of a laser-direct-structuring (LDS) antenna, a flexible printed circuit (FPC) antenna, a floating metal (FLM) antenna, and a printed circuit board (PCB) antenna.
11. The electronic device according to claim 1 , wherein:
the first antenna further comprises a second end; and
the feed point is disposed at the second end of the first antenna or the second end of the second antenna.
12. The electronic device according to claim 1 , wherein:
when the feed point feeds the electrical signal, the first antenna and the second antenna generate resonance; and
the resonance is determined by the electrical length of the first antenna, the electrical length of the second antenna, and an electrical length between electrical connection points between the ground and the first antenna and the second antenna.
13. The electronic device according to claim 1 , wherein a dipole antenna is formed between the first antenna, the second antenna, and a part of the ground.
14. The electronic device according to claim 1 , further comprising:
a floating metal piece disposed between the first antenna and the second antenna, wherein the floating metal piece partially overlaps the first antenna and the second antenna in a first direction, and the first direction is perpendicular to a plane on which the ground is located.
15. The electronic device according to claim 1 , wherein an opening is on a side of the first antenna that faces the second antenna.
16. The electronic device according to claim 1 , further comprising:
a first connecting piece and a second connecting piece;
wherein a first end of the first connecting piece is electrically connected to the first antenna at the first ground point, and a second end of the first connecting piece is electrically connected to the ground; and
a first end of the second connecting piece is electrically connected to the second antenna at the second ground point, and a second end of the second connecting piece is electrically connected to the ground.
17. The electronic device according to claim 1 , wherein:
the first antenna is an inverted L antenna (ILA), an inverted F antenna (IFA), or a planar inverted F antenna (PIFA); and
the second antenna is an ILA, an IFA, or a PIFA.
18. An electronic device, comprising:
a middle frame configured to act as a ground;
a first antenna comprising a first end; and
a second antenna comprising a first end and a second end, wherein the second antenna and the first antenna do not contact each other;
wherein a first ground point is disposed at the first end of the first antenna, and the first antenna is electrically connected to the ground at the first ground point;
a second ground point is disposed at the first end of the second antenna, and the second antenna is electrically connected to the ground at the second ground point;
a distance between the second ground point and the first ground point is greater than a distance between the second end of the second antenna and the first ground point;
a feed point is disposed on the first antenna or the second antenna, and the feed point is configured to feed an electrical signal, wherein a distance between the feed point and the first ground point or the second ground point is less than a quarter of a first wavelength, and the first wavelength is an operating wavelength of the electronic device; and
wherein an electrical length of the first antenna is the same as an electrical length of the second antenna.
19. The electronic device according to claim 18 , wherein projections that are of a part of the first antenna and a part of the second antenna and that are on a plane on which the ground is located are parallel with each other in a first direction, and a spacing of the projections in a second direction is less than a quarter of the first wavelength, wherein the first direction is an extension direction of the part of the first antenna and the part of the second antenna, the second direction is perpendicular to the first direction.