CN-122000679-A - Antenna assembly and electronic equipment

Abstract

The application provides an antenna assembly and electronic equipment. The antenna assembly comprises a first radiator and a first feed source, wherein the first radiator comprises a first grounding end, a first feed point and a first free end which are sequentially arranged, the first feed source is used for generating a first radio frequency signal and a second radio frequency signal, the first feed source is electrically connected to the first feed point, when the antenna assembly is in a free state, the first radio frequency signal is used for exciting the first radiator to support a first frequency band, the second radio frequency signal is used for exciting the first radiator to support a second frequency band, the frequency of the second frequency band is smaller than that of the first frequency band, and when an electronic device applied by the antenna assembly is sleeved with a metal protective shell, the second radio frequency signal excites at least part of the first frequency band to support the first frequency band. When the electronic equipment, to which the antenna assembly is applied, is sleeved with the metal protective shell, the antenna assembly still has good antenna performance in the first frequency band.

Inventors

• ZENG ZHIMIN
• PAN JIN
• TANG HAIJUN

Assignees

• OPPO广东移动通信有限公司

Dates

Publication Date

20260508

Application Date

20241105

Claims (20)

1. 1. An antenna assembly, the antenna assembly comprising: a first radiator including a first grounding end, a first feeding point and a first free end which are sequentially arranged, and The first feed source is used for generating a first radio frequency signal and a second radio frequency signal and is electrically connected to the first feed point; When the antenna assembly is in a free state, the first radio frequency signal is used for exciting the first radiator to support a first frequency band, and the second radio frequency signal is used for exciting the first radiator to support a second frequency band, wherein the frequency of the second frequency band is smaller than that of the first frequency band; when the electronic equipment applied by the antenna component is sleeved with the metal protective shell, the second radio frequency signal excites the first radiator to support at least part of the first frequency band.
2. 2. The antenna assembly of claim 1, The first radio frequency signal excites a first resonant mode of the first radiator to support the first frequency band, wherein the first resonant mode is a quarter-wavelength mode of the first radiator; The second radio frequency signal excites a second resonant mode of the first radiator, wherein the second resonant mode is a composite left-right hand mode of the first radiator.
3. 3. The antenna assembly of claim 1, wherein the first radiator further has a second feed point spaced from the first feed point, and wherein the second feed point is adjacent the first free end as compared to the first feed point; the antenna assembly further comprises a second feed source, wherein the second feed source is used for generating a third radio frequency signal and a fourth radio frequency signal, the second feed source is electrically connected to the second feed point, when the antenna assembly is in a free state, the third radio frequency signal excites the first radiator to support a third frequency band, the fourth radio frequency signal excites the first radiator to support a fourth frequency band, the frequency of the third frequency band is larger than that of the first frequency band, and the frequency of the fourth frequency band is larger than that of the third frequency band.
4. 4. The antenna assembly of claim 3, wherein the antenna assembly further comprises: and one end of the first band-pass circuit is electrically connected with the first feed point, the other end of the first band-pass circuit is grounded, and the first band-pass circuit is a band-pass circuit of the third frequency band.
5. 5. The antenna assembly of claim 4 wherein the second feed excites a third resonant mode and a first enhancement mode of the first radiator to support the third frequency band; the resonant current corresponding to the third resonant mode is distributed from the first feed point to the first free end; the resonant current corresponding to the first enhancement mode distributes the first grounding end and the first feeding point, and the resonant current corresponding to the first enhancement mode and the resonant current corresponding to the third resonant mode flow in the same direction.
6. 6. The antenna assembly of claim 4, wherein the first pass circuit comprises: A first capacitor having one end electrically connected to the first feeding point, and One end of the first inductor is electrically connected to the other end of the first capacitor, and the other end of the first inductor is grounded.
7. 7. The antenna assembly of claim 4, wherein the antenna assembly further comprises: And one end of the second band-pass circuit is electrically connected with the first feed point, the other end of the second band-pass circuit is grounded, and the second band-pass circuit is a band-pass circuit of the fourth frequency band.
8. 8. The antenna assembly of claim 7, wherein the second bandpass circuit comprises: a second capacitor, one end of which is electrically connected to the first feeding point; A second inductor connected in parallel with the second capacitor, and And one end of the third inductor is electrically connected with the other end of the second capacitor, and the other end of the third inductor is grounded.
9. 9. The antenna assembly of claim 7, wherein the antenna assembly further comprises: The first feed source is electrically connected with the first impedance matching circuit to the first feed point, and the first impedance matching circuit is used for carrying out impedance matching on the first feed source and the first radiator.
10. 10. The antenna assembly of claim 9, wherein the first impedance matching circuit comprises: one end of the third capacitor is electrically connected to the first feed source; a fourth capacitor, one end of which is electrically connected to the other end of the third capacitor; A fourth inductor, one end of which is electrically connected to the other end of the fourth capacitor, and the other end of which is electrically connected to the first feeding point; A fifth capacitor having one end electrically connected to the one end of the fourth inductor and the other end grounded, and And one end of the fifth inductor is electrically connected to the one end of the fifth inductor, and the other end of the fifth inductor is grounded.
11. 11. The antenna assembly of claim 3 wherein the second feed excites a fourth resonant mode of the first radiator to support the fourth frequency band; and the current corresponding to the fourth resonance mode is distributed from the second feeding point to the first free end.
12. 12. The antenna assembly of claim 3, wherein the antenna assembly further comprises: And the second feed source is electrically connected with the band-stop circuit to the second feed point, and the band-stop circuit is the band-stop circuit of the first frequency band.
13. 13. The antenna assembly of claim 12, wherein the bandstop circuit comprises: A sixth inductor, one end of which is electrically connected to the second feed source and the other end of which is electrically connected to the second feed point, and And a sixth capacitor connected in parallel with the sixth inductor.
14. 14. The antenna assembly of claim 12, wherein the antenna assembly further comprises: The second feed source is sequentially and electrically connected with the second impedance matching circuit and the band-stop circuit to the second feed point, and the second impedance matching circuit is used for carrying out impedance matching on the second feed source and the first radiator.
15. 15. The antenna assembly of claim 14, wherein the second impedance matching circuit comprises: a seventh capacitor, one end of which is electrically connected to the second feed source; an eighth capacitor, one end of which is electrically connected to the other end of the seventh capacitor; A seventh inductor having one end electrically connected to the other end of the eighth capacitor and the other end electrically connected to the band-stop circuit, and And one end of the eighth inductor is electrically connected to the other end of the seventh inductor, and the other end of the eighth inductor is grounded.
16. 16. The antenna assembly of any one of claims 1-15, wherein the antenna assembly further comprises: A second radiator including a second free end, a third feeding point and a second grounding end, which are sequentially arranged, wherein the second free end is opposite to the first free end and is arranged at intervals with a coupling gap, the second radiator and the first radiator are coupled through the coupling gap, and The third feed source is used for generating a fifth radio frequency signal, the third feed source is connected to the third feed point, and when the antenna assembly is in a free state, the fifth radio frequency signal excites the second radiator to support a fifth frequency band, and the frequency of the fifth frequency band is larger than that of the first frequency band; when the electronic equipment applied by the antenna assembly is sleeved with a metal protective shell, the fifth radio frequency signal is used for exciting the second radiator to support at least part of the first frequency band.
17. 17. The antenna assembly of claim 16, wherein the first feed is further configured to excite a second enhancement mode of the second radiator to support the first frequency band, wherein resonant currents corresponding to the second enhancement mode are distributed between the second free end and the second ground end; And when the first resonant mode supports the first frequency band, a first resonant current corresponding to the first resonant mode flows from the first grounding point to the first free end, and a second enhancement current corresponding to the second enhancement mode flows from the second free end to the second grounding end.
18. 18. The antenna assembly of claim 16, wherein when the first radiator has a second feed point, the antenna assembly further comprises a second feed, the second feed is further configured to excite a third enhancement mode of the second radiator to support a third frequency band, wherein when the second feed excites a third resonance mode of the first radiator to support the third frequency band, a resonance current of the third enhancement mode is distributed between the second free end and the second ground end, and a resonance current of the third enhancement mode is the same as a direction of a resonance current of the third resonance mode.
19. 19. The antenna assembly of claim 18, wherein the antenna assembly further comprises: And one end of the caliber tuning circuit is electrically connected to the third feed point, and the other end of the caliber tuning circuit is grounded, and the caliber tuning circuit is used for caliber tuning of a fifth frequency band so that the frequency of the fifth frequency band is larger than that of the first frequency band.
20. 20. The antenna assembly of claim 19, wherein the aperture tuning circuit comprises: a tuning inductor having one end electrically connected to the third feeding point, and And one end of the isolation capacitor is electrically connected to the other end of the tuning inductor, and the other end of the isolation capacitor is grounded.

Description

Antenna assembly and electronic equipment Technical Field The present application relates to the field of communications technologies, and in particular, to an antenna assembly and an electronic device. Background With the development of technology, electronic devices such as mobile phones with communication functions are becoming more popular and more powerful. An antenna assembly is typically included in an electronic device to enable communication functions of the electronic device. However, when the electronic device in the related art is sleeved with the metal protection shell, the performance attenuation of the antenna assembly in the target frequency band (such as the GPS L1 frequency band) is huge, and the performance of the antenna in the target frequency band is poor. Disclosure of Invention In a first aspect, an embodiment of the present application provides an antenna assembly, including: a first radiator including a first grounding end, a first feeding point and a first free end which are sequentially arranged, and The first feed source is used for generating a first radio frequency signal and a second radio frequency signal and is electrically connected to the first feed point; When the antenna assembly is in a free state, the first radio frequency signal is used for exciting the first radiator to support a first frequency band, and the second radio frequency signal is used for exciting the first radiator to support a second frequency band, wherein the frequency of the second frequency band is smaller than that of the first frequency band; when the electronic equipment applied by the antenna component is sleeved with the metal protective shell, the second radio frequency signal excites the first radiator to support at least part of the first frequency band. In a second aspect, an embodiment of the present application provides an electronic device, which includes an antenna assembly according to the first aspect. In summary, in the antenna assembly provided in the embodiment of the present application, the first feed source is configured to generate a first radio frequency signal and a second radio frequency signal, and the first feed source is electrically connected to the first feeding point of the first radiator, so that the first radio frequency signal and the second radio frequency signal are combined to excite the same first radiator, so that the first radiator supports the first frequency band and the second frequency band. When the electronic equipment applied by the antenna assembly is worn with the metal protective shell, the frequency band supported by the second radio frequency signal excited first radiator is subjected to frequency offset compared with the second frequency band. When the electronic equipment applied to the antenna assembly is worn with the metal protective shell, the frequency band supported by the first radiator excited by the second radio frequency signal is shifted to a higher frequency than the second frequency band, so that at least part of the frequency band supported by the first radiator excited by the second radio frequency signal falls into the range of the first frequency band. Therefore, when the electronic device applied by the antenna assembly is sleeved with the metal protective shell, the second radio frequency signal excites the first radiator to support at least part of the first frequency band, so that when the electronic device applied by the antenna assembly is worn with the metal protective shell, the antenna assembly still has a larger bandwidth in the first frequency band, and when the electronic device applied by the antenna assembly is worn with the metal protective shell, the antenna assembly still has better antenna performance in the first frequency band. Drawings In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art. Fig. 1 is a schematic diagram of an antenna assembly according to an embodiment of the present application; fig. 2 is a schematic diagram of a resonant current corresponding to a first resonant mode of the antenna assembly shown in fig. 1; fig. 3 is a schematic diagram of a resonant current corresponding to a second resonant mode of the antenna assembly shown in fig. 1; Fig. 4 is a schematic diagram of an antenna assembly according to another embodiment of the present application; Fig. 5 is a schematic diagram of an antenna assembly according to another embodiment of the present application; fig. 6 is a schematic diagram of a resonant current corresponding to the antenna assembly shown in fig. 5 supporting a third frequency band; Fig. 7 is a schematic