Radiator sharing antenna and electronic device

Patent metadata

Field	Value
Publication number	US-12003017-B2
Application number	US-202017432731-A
Country	US
Kind code	B2
Filing date	Feb 10, 2020
Priority date	Feb 27, 2019
Publication date	Jun 4, 2024
Grant date	Jun 4, 2024

Abstract

A radiator sharing antenna and mobile terminal including the radiator sharing antenna includes a radiator divided into a first sub-radiator and a second sub-radiator by a gap, a first feeding point, and a second feeding point. A radio frequency signal is fed through the first feeding point on the first sub-radiator, and a radio frequency signal is fed through the second feeding point on the second sub-radiator. The radiator sharing antenna is adapted to generate a plurality of antenna operating bands through the resonance generated by the first sub-radiator and the second sub-radiator and the parasitic resonance generated through mutual influence between the first sub-radiator and the second sub-radiator.

First claim

What is claimed is:

1. A terminal device comprising:
a radiator sharing antenna, comprising:
a radiator comprising:
a first end; and
a second end opposite the first end;

a first ground point located at the first end;
a second ground point located at the second end;
a gap located between the first ground point and the second ground point and dividing the radiator into a first sub-radiator and a second sub-radiator;
a first feeding point located on the first sub-radiator, wherein the first feeding point is configured to pass a first radio frequency signal to generate operating bands through resonance of the first sub-radiator and through parasitic resonance of the second sub-radiator; and
a second feeding point located on the second sub-radiator, wherein the second feeding point is configured to pass a second radio frequency signal to generate additional operating bands through resonance of the second sub-radiator and through parasitic resonance of the first sub-radiator;

a middle frame;
a mainboard disposed on the middle frame, wherein a first space is provided between each of the first sub-radiator and the second sub-radiator and the mainboard; and
a radio frequency front end, disposed on the mainboard, and coupled with the first feeding point and the second feeding point of the radiator sharing antenna.

2. The terminal device of claim 1 , wherein the resonance of the first sub-radiator comprises resonances in a first operating band, a second operating band, and a third operating band, wherein a parasitic resonance of the second sub-radiator comprises resonances in a fourth operating band and a fifth operating band, wherein the first operating band comprises 2.4 Gigahertz (GHz) Wi-Fi band, wherein the second operating band and the fourth operating band comprise a sub-sixth generation technology standard (6G) band, and wherein the third operating band and the fifth operating band comprise a fifth generation technology standard (5G) Wi-Fi band.

3. The terminal device of claim 2 , wherein the first operating band is in a quarter antenna mode of an inverted-F antenna (IFA) generated through the first sub-radiator, wherein the second operating band is in a half-wavelength mode of a loop antenna generated through the first sub-radiator, wherein the third operating band is in a three-quarters antenna mode of the IFA generated through the first sub-radiator, wherein the fourth operating band is in a half-wavelength mode of a parasitic loop antenna generated through the second sub-radiator, and wherein the fifth operating band is in a three-seconds-wavelength mode of the parasitic loop antenna generated through the second sub-radiator.

4. The terminal device of claim 1 , wherein the second feeding point is configured to pass the second radio frequency signal fed through the second feeding point to generate operating bands through resonance of the second sub-radiator and parasitic resonance of the first sub-radiator, wherein the resonance of the second sub-radiator comprises an additional resonance in a sixth operating band, wherein the parasitic resonance of the first sub-radiator comprises an additional resonance in a seventh operating band, wherein the sixth operating band comprises a Global Positioning System (GPS) L5 band, and wherein the seventh operating band comprises a GPS L1 band.

5. The terminal device of claim 4 , wherein the sixth operating band is in a composite right/left-handed antenna mode generated through the resonance of the second sub-radiator, and wherein the seventh operating band is in a band antenna mode generated through the parasitic resonance of the first sub-radiator.

6. The terminal device of claim 1 , wherein the operating bands comprise a Wi-Fi band and a sub-sixth generation technology standard (6G) band, or wherein the additional operating bands comprise a Global Positioning System (GPS) L1 band and a GPS L5 band.

7. The terminal device of claim 1 , wherein a first distance from the first feeding point to the gap is one-sixteenth of a wavelength of an operating frequency in an antenna mode generated between the first feeding point and the gap, wherein a second distance from the second feeding point to the gap is one-eighth of a wavelength of an operating frequency in an antenna mode generated between the second feeding point and the gap, wherein a third distance from the first ground point to the gap is a quarter of a wavelength of an operating frequency in an antenna mode generated between the first ground point and the gap, and wherein a fourth distance from the second ground point to the gap is a quarter of a wavelength of an operating frequency in an antenna mode generated between the second ground point and the gap.

8. The terminal device of claim 1 , further comprising:
a first filter circuit having a first end coupled with the first feeding point, wherein a second end of the first filter circuit is grounded; and
a second filter circuit having a first end coupled with the second feeding point, wherein a second end of the second filter circuit is grounded.

9. The terminal device of claim 8 , wherein the first filter circuit is a high-impedance low-pass filter circuit, and the second filter circuit is a high-pass low-impedance filter circuit.

10. The terminal device of claim 8 , wherein the first filter circuit and the second filter circuit each comprise a first capacitor and a first inductor disposed in parallel.

11. The terminal device of claim 10 , wherein the first filter circuit or the second filter circuit further comprises a second inductor coupled in series with the first capacitor; and wherein the first filter circuit or the second filter circuit further comprises a second capacitor coupled in series to the first capacitor and the first inductor.

12. The terminal device of claim 8 , wherein the radio frequency front end is coupled with the first filter and the second filter.

13. The terminal device of claim 12 , further comprising:
a capacitor element, disposed between the second feeding point and the radio frequency front end so that the second sub-radiator is configured to generate a composite right/left-handed antenna mode.

14. The terminal device of claim 1 , wherein the middle frame comprises a middle plate and a frame disposed around the middle plate, and wherein the frame is a non-metal frame and the first sub-radiator and the second sub-radiator are disposed between the middle plate and the frame.

15. The terminal device of claim 1 , wherein the middle frame comprises a middle plate and a frame disposed around the middle plate, wherein the frame is a metal frame and wherein a part of the frame form the first sub-radiator and the second sub-radiator, a second space is provided between each of the first sub-radiator and the second sub-radiator and the middle plate.

16. The terminal device of claim 1 , wherein the middle frame is grounded, the first ground point and the second ground point of the radiator sharing antenna are grounded via the middle frame.

17. The terminal device of claim 1 , wherein the first feeding point and the second feeding point are configured to simultaneously perform signal transmission, so that the operating bands and the additional operating bands are simultaneously generated on the radiator.

18. A radio frequency transmission method comprising:
determining a gap located between a first ground point and a second ground point of a radiator of a radio sharing antenna;
dividing the radiator of the radio sharing antenna into a first sub-radiator and a second sub-radiator of the radiat

Assignees

• Huawei Tech Co Ltd

Inventors

• Sun Qiao
• Li Kun
• Lu Liang

Classifications

• H01Q1/243 Primary

  with built-in antennas · CPC title

• H01Q1/48

  Earthing means; Earth screens; Counterpoises · CPC title

• H01Q5/35

  using two or more simultaneously fed points · CPC title

• H01Q9/42

  with folded element, the folded parts being spaced apart a small fraction of the operating wavelength · CPC title

• H04M1/0281

  for providing single handed use or left/right hand conversion · CPC title