US-12621379-B2 - Electronic device

Abstract

Electronic devices and antenna structures are described. An example electronic device includes an antenna structure, wherein the antenna structure includes: a first radiator and a second radiator, wherein the first radiator includes a first end and a second end, and the second radiator includes a first end and a second end. The first end of the first radiator and the first end of the second radiator face each other and are not in contact with each other, and a slot is formed between the first end of the first radiator and the first end of the second radiator. The first radiator and the second radiator are disposed in a bent manner, and a spatial region formed between the first radiator, the second radiator, and the slot is T-shaped; and the second end of the first radiator is grounded, and the second end of the second radiator is grounded.

Inventors

• Hanyang Wang
• Kexin Liu
• Dong Yu

Assignees

• HUAWEI TECHNOLOGIES CO., LTD.

Dates

Publication Date

20260505

Application Date

20210519

Priority Date

20200605

Claims (20)

1. 1 . An electronic device, comprising an antenna structure and a first feed unit, wherein the antenna structure comprises: a first radiator, wherein the first radiator comprises a first end and a second end; and a second radiator, wherein the second radiator comprises a first end and a second end, wherein: the first end of the first radiator and the first end of the second radiator face each other and are not in contact with each other, and a slot is formed between the first end of the first radiator and the first end of the second radiator; the first radiator and the second radiator are disposed in a bent manner, and a spatial region formed between the first radiator, the second radiator, and the slot is T-shaped; the second end of the first radiator is grounded, and the second end of the second radiator is grounded; and the first feed unit feeds the antenna structure at the first end of the first radiator and the first end of the second radiator, one end of the first feed unit is grounded, and another end of the first feed unit is connected to at least one of the first radiator or the second radiator.
2. 2 . The electronic device according to claim 1 , wherein the first radiator is located on one side of an axis of the slot, and the second radiator is located on the other side of the axis.
3. 3 . The electronic device according to claim 2 , wherein the first radiator and the second radiator are symmetrical to each other with respect to the axis.
4. 4 . The electronic device according to claim 2 , wherein: when the first feed unit is feeding, a current on the first radiator and a current on the second radiator are symmetrical to each other with respect to the axis.
5. 5 . The electronic device according to claim 2 , wherein the electronic device further comprises a second feed unit, a positive electrode of the second feed unit is electrically connected to the second end of the first radiator, and a negative electrode of the second feed unit is electrically connected to the second end of the second radiator.
6. 6 . The electronic device according to claim 5 , wherein when the second feed unit is feeding, a current on the first radiator and a current on the second radiator are anti-symmetrical to each other with respect to the axis.
7. 7 . The electronic device according to claim 5 , wherein the electronic device further comprises a filter; one end of the filter is electrically connected to the first end of the first radiator, and the other end is electrically connected to the first end of the second radiator; and when the second feed unit is feeding, the filter exhibits a band-pass characteristic in a first frequency band corresponding to resonance generated when the antenna structure operates in an N-wavelength mode, and the filter has a band-stop characteristic in a second frequency band corresponding to resonance generated when the antenna structure operates in an N−½-wavelength mode, wherein N is a positive integer.
8. 8 . The electronic device according to claim 5 , wherein the electronic device further comprises a matching network; the matching network comprises: a first inductor, a second inductor, and a capacitor; one end of the first inductor is electrically connected to the second end of the first radiator, and the other end of the first inductor is electrically connected to the positive electrode of the second feed unit; one end of the second inductor is electrically connected to the second end of the second radiator, and the other end of the second inductor is electrically connected to the negative electrode of the second feed unit; and the capacitor is connected in parallel between the first inductor and the second inductor.
9. 9 . The electronic device according to claim 8 , wherein: an inductance value of the first inductor is from 0.3 nH to 2 nH; an inductance value of the second inductor is from 0.3 nH to 2 nH; and a capacitance value of the capacitor is from 0.3 pF to 2 pF.
10. 10 . The electronic device according to claim 1 , wherein the electronic device further comprises: a metal part, wherein: the first feed unit feeds the antenna structure in an indirect coupling manner at the first end of the first radiator and the first end of the second radiator by using the metal part.
11. 11 . The electronic device according to claim 10 , wherein the metal part comprises a metal spring.
12. 12 . The electronic device according to claim 1 , wherein the electronic device further comprises a third feed unit configured to feed the antenna structure at the first radiator or the second radiator, and the antenna structure is a single antenna structure.
13. 13 . The electronic device according to claim 12 , wherein the first radiator and the second radiator are asymmetrical to each other with respect to an axis of the slot, or the third feed unit is configured to asymmetrical feed the antenna structure.
14. 14 . The electronic device according to claim 1 , wherein the electronic device further comprises: an antenna support, wherein: the antenna structure is disposed on a surface of the antenna support.
15. 15 . The electronic device according to claim 1 , wherein the electronic device further comprises: an antenna support, wherein: the first radiator comprises a first part and a second part; the second radiator comprises a third part and a fourth part; the first part and the third part are parts of a metal bezel of the electronic device; the second part and the fourth part are disposed on a surface of the antenna support; and the first part is directly electrically connected to the second part, and the third part is directly electrically connected to the fourth part.
16. 16 . The electronic device according to claim 1 , wherein the first radiator and the second radiator are folded.
17. 17 . An antenna comprises: a first radiator, wherein the first radiator comprises a first end and a second end; and a second radiator, wherein the second radiator comprises a first end and a second end, wherein: the first end of the first radiator and the first end of the second radiator face each other and are not in contact with each other, and a slot is formed between the first end of the first radiator and the first end of the second radiator; the first radiator and the second radiator are disposed in a bent manner, and a spatial region formed between the first radiator, the second radiator, and the slot is T-shaped; the second end of the first radiator is grounded, and the second end of the second radiator is grounded; and the antenna is fed by a first feed unit at the first end of the first radiator and the first end of the second radiator, wherein one end of the first feed unit is grounded, and another end of the first feed unit is connected to at least one of the first radiator or the second radiator.
18. 18 . The antenna according to claim 17 , wherein the first radiator is located on one side of an axis of the slot, and the second radiator is located on the other side of the axis.
19. 19 . The antenna according to claim 18 , wherein the first radiator and the second radiator are symmetrical to each other with respect to the axis.
20. 20 . The antenna according to claim 17 , wherein the first radiator and the second radiator are folded.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a National Stage of International Patent Application No. PCT/CN2021/094633, filed on May 19, 2021, which claims priority to Chinese Patent Application No. 202010504820.X, filed on Jun. 5, 2020, both of which are hereby incorporated by reference in their entireties. TECHNICAL FIELD This application relates to the field of wireless communications, and in particular, to an electronic device. BACKGROUND With rapid development of wireless communications technologies, in the past, the second generation (second generation, 2G) mobile communications system mainly supports a call function. An electronic device is merely a tool used by people to send and receive short messages and perform voice communication. Because data is transmitted via a voice channel, a wireless Internet access speed is extremely slow. Nowadays, in addition to making calls, sending short messages, and taking photos, the electronic device can be used to listen to music online, watch online movies, perform real-time video calling, and the like, which cover various applications such as calls, movies, entertainment, and E-commerce in people's life. For a plurality of functional applications, data needs to be uploaded and downloaded over a wireless network. Therefore, high-speed data transmission becomes extremely important. As people have an increasing demand for high-speed data transmission, a requirement for an antenna becomes higher. However, a volume reserved for the antenna in the electronic device is limited. Therefore, the antenna is designed to cover a maximum frequency range with a minimum volume. This requires comprehensive use of a plurality of operating modes of the antenna. In addition, as a quantity of antennas continuously increases, implementing relatively good isolation between the antennas also becomes an urgent problem to be resolved. SUMMARY Embodiments of this application provide an electronic device. The electronic device may include an antenna structure. When the antenna structure is symmetrical, a common mode and a differential mode may be respectively excited through symmetrical feed and anti-symmetrical feed. Because radiation generated by the two modes is integrally orthogonal in far field, the antenna structure may be used as a co-radiator dual-antenna structure. When the antenna structure uses the asymmetrical feed or the antenna structure is asymmetrical, a single feed unit may simultaneously excite the common mode and the differential mode. A plurality of operating modes of an antenna are used to extend an operating bandwidth of the antenna, so that the antenna covers more frequency ranges with a limited volume. The antenna structure may be used as a broadband antenna. According to a first aspect, an electronic device is provided, including an antenna structure. The antenna structure includes: a first radiator, where the first radiator includes a first end and a second end; and a second radiator, where the second radiator includes a first end and a second end. The first end of the first radiator and the first end of the second radiator face each other and are not in contact with each other, and a slot is formed between the first end of the first radiator and the first end of the second radiator. The first radiator and the second radiator are disposed in a bent manner, and a spatial region formed between the first radiator, the second radiator, and the slot is T-shaped. The second end of the first radiator is grounded, and the second end of the second radiator is grounded. According to the technical solution in this embodiment of this application, a slitted loop antenna structure formed by the first radiator and the second radiator may generate a plurality of operating modes to extend an operating bandwidth, so that an antenna covers a larger frequency range with a limited volume in the electronic device. With reference to the first aspect, in some implementations of the first aspect, the first radiator is located on one side of an axis of the slot, and the second radiator is located on the other side of the axis. According to the technical solution in this embodiment of this application, the first radiator and the second radiator may be located on both sides of the axis of the slot. It should be understood that a more symmetrical structure can enable the antenna to obtain better isolation as a whole. With reference to the first aspect, in some implementations of the first aspect, the first radiator and the second radiator are symmetrical to each other with respect to the axis. According to the technical solution in this embodiment of this application, when the first radiator and the second radiator are symmetrical to each other with respect to the axis, both a common mode and a differential mode of the antenna structure may be excited. The antenna structure provided in this embodiment of this application may be used as a co-radiator dual-antenna structure. Wh