Antenna structure and electronic device with antenna structure

Abstract

To provide an antenna structure including a frame body, a first feed-in part and a first connection part.SOLUTION: A frame body is made at least partially of a metal material. The frame body includes at least a first part and a second part. The second part is connected to one end of the first part. Length of the second part is greater than length of the first part. The first part is provided with a first slot; the second part is provided with a second slot. A part of the frame body between a first slot and a second slot forms a first radiation part. A first feed-in part is arranged in the first radiation part and is located at the first part of the frame body. The first feed-in part is electrically connected to a first feed for supplying the first radiation part with a current signal. The first connection part is arranged in the first radiation part and is located at the second part of the frame body. An antenna structure is capable of effectively improving low band (LB) radiation performance. The present invention further provides an electronic device having the antenna structure.SELECTED DRAWING: Figure 3

Description

It will not be published because it violates public order and morals.

Claims

1. An antenna structure for an electronic device, the electronic device comprising a frame, the frame comprising at least a bottom frame, a first side frame, and a second side frame, the first side frame and the second side frame facing each other, one end of the bottom frame connected to the first side frame, the other end of the bottom frame connected to the second side frame, a first slot and a third slot provided in the bottom frame, a distance from the first slot to the first side frame being smaller than a distance from the third slot to the first side frame, and a second slot provided in the first side frame; the antenna structure comprises a first radiating portion, a first connecting portion, and a first feed-in portion, a portion of the frame between the first slot and the second slot forms the first radiating portion, the first connecting portion is located on the first radiating portion and on the first side frame, and the first feed-in portion is located on the first radiating portion; the antenna structure further comprises a second radiating portion, a ground point, and a second feed-in portion, wherein the ground point is located on the second side frame, or the ground point is located on the lower frame, and a distance from the ground point to the second side frame is smaller than a distance from the third slot to the second side frame, a portion of the frame between the ground point and the third slot forms the second radiating portion, and the second feed-in portion is located on the second radiating portion; the antenna structure further comprises a third connection portion and a third tuning unit, the third connection portion is located on the second radiating portion, one end of the third tuning unit is electrically connected to the third connection portion and the second feed-in portion, and the other end of the third tuning unit is grounded.

2. 2. The antenna structure of claim 1, wherein the antenna structure is configured to simultaneously generate a first resonance and a second resonance when a first signal is supplied to the first radiating portion via the first feed-in portion.

3. The antenna structure of claim 2 , wherein a portion of the frame between the first slot and the third slot is configured to form a first parasitic stub of the first radiating portion.

4. the antenna structure is configured to generate a third resonance based on the first parasitic stub when the first signal is supplied to the first radiating portion via the first feed-in portion; The antenna structure of claim 3 , wherein the third resonance is different from the first resonance and the second resonance.

5. The antenna structure of claim 4 , wherein the frequency of the third resonance is less than the frequency of the first resonance.

6. 6. An antenna structure according to claim 1, wherein the first connection is directly grounded or grounded by an inductor.

7. 6. The antenna structure according to claim 2, wherein the electrical length of the first radiating portion is close to half a wavelength corresponding to the frequency of the second resonance.

8. The antenna structure according to claim 1 , wherein the lower frame comprises a USB interface module and / or a sound cavity and / or a card holder.

9. 9. The antenna structure according to claim 1, further comprising a first tuning unit, one end of the first tuning unit being electrically connected to the first feed-in section and the other end of the first tuning unit being grounded.

10. the antenna structure further comprises a first tuning unit, one end of the first tuning unit is electrically connected to the first feed-in portion, and the other end of the first tuning unit is grounded; The antenna structure of claim 4 , wherein the antenna structure is configured to generate the third resonance at a frequency less than a frequency of the first resonance based on the first parasitic stub and the first tuning unit.

11. the first feed-in section is configured to provide a first signal to the second radiating section; 11. An antenna structure according to claim 1, wherein the second feed-in section is configured to feed a second signal to the second radiating section, the second signal being different from the first signal.

12. 12. The antenna structure of claim 11, wherein the first feed-in section is electrically connected to a first feed for providing the first signal to the first radiating section, and the second feed-in section is electrically connected to a second feed for providing the second signal to the second radiating section, the second feed being different from the first feed.

13. 13. The antenna structure of claim 11 or 12, wherein the electrical length of the first radiating portion is greater than the electrical length of the second radiating portion.

14. 14. The antenna structure of claim 11, wherein the first radiating portion is configured to generate a radiated signal in a first radiation band, the first radiation band being a low band, and the second radiating portion is configured to generate a radiated signal in a second radiation band, the second radiation band being a mid / high band.

15. 15. The antenna structure of claim 1, wherein a portion of the frame between the first slot and the first connection portion is configured to form a second parasitic stub of the second radiating portion.

16. 16. The antenna structure of claim 15, wherein the antenna structure is configured to distribute a current distribution on the second radiating portion based on the second parasitic stub when a second signal is supplied to the second radiating portion via the second feed-in portion.

17. the antenna structure further comprises a first tuning unit, one end of the first tuning unit is electrically connected to the first feed-in portion, and the other end of the first tuning unit is grounded; 17. An antenna structure according to any one of claims 1 to 16, wherein the first tuning unit is configured to adjust a parasitic resonant frequency of the second radiating portion.

18. 20. The antenna structure of claim 9, 10 or 17, wherein the first tuning unit comprises a first tuning branch, a second tuning branch, and at least one first switch unit, the first tuning branch comprising a capacitor or an inductor, and the second tuning branch comprising a capacitor or an inductor.

19. 19. The antenna structure of claim 1, wherein the third tuning unit comprises a fifth tuning branch, a sixth tuning branch, and at least one third switch unit, the fifth tuning branch comprising a capacitor or an inductor, and the sixth tuning branch comprising a capacitor or an inductor.

20. An antenna structure described in any one of claims 1 to 19, wherein the first feed-in portion is made of a material such as iron, copper foil, or a conductor in a laser direct structuring process, and the first feed-in portion is electrically connected to the first feed using a dome, microstrip, strip, or coaxial cable.

21. An electronic device comprising an antenna structure according to any one of claims 1 to 20.

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