# US 12,003,017 B2 · Radiator sharing antenna and electronic device

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- Number: US 12,003,017 B2
- Document ID: US12003017B2
- Status: Granted
- Kind: B2
- Application number: 17/432,731
- Filed: 2020-02-10
- Published: 2022-05-05
- Granted: 2024-06-04
- Earliest claimed: 2019-02-27
- Assignees: Huawei Technologies Co., Ltd.
- Applicants: Huawei Technologies Co., Ltd.
- Inventors: Qiao Sun; Kun Li; Liang Lu
- Web page: https://patentgrep.com/patent/US12003017B2

## CPC

- H01Q 1/243: {with built-in antennas}
- H01Q 1/2291: {used in Bluetooth® or Wi-Fi® devices of Wireless Local Area Networks [WLAN] (H01Q1/241 takes precedence; WLAN in general H04W)}
- H01Q 1/44: using equipment having another main function to serve additionally as an antenna {, e.g. means for giving an antenna an aesthetic aspect}(H01Q1/27 - H01Q1/34 take precedence)
- H01Q 1/48: Earthing means; Earth screens; Counterpoises
- H01Q 5/328: between a radiating element and ground
- H01Q 5/35: using two or more simultaneously fed points
- H01Q 5/378: Combination of fed elements with parasitic elements
- H01Q 5/50: Feeding or matching arrangements for broad-band or multi-band operation
- H01Q 9/42: with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
- H01Q 21/30: Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
- H04M 1/0281: {for providing single handed use or left/right hand conversion}
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)
- H04M: TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telephone cable and not involving telephone switching apparatus G08)

## 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.

## Claims

### Claim 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.

### Claim 2 (depends on 1)

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.

### Claim 3 (depends on 2)

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.

### Claim 4 (depends on 1)

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.

### Claim 5 (depends on 4)

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.

### Claim 6 (depends on 1)

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.

### Claim 7 (depends on 1)

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.

### Claim 8 (depends on 1)

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.

### Claim 9 (depends on 8)

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.

### Claim 10 (depends on 8)

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.

### Claim 11 (depends on 10)

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.

### Claim 12 (depends on 8)

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

### Claim 13 (depends on 12)

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.

### Claim 14 (depends on 1)

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.

### Claim 15 (depends on 1)

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.

### Claim 16 (depends on 1)

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.

### Claim 17 (depends on 1)

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.

### Claim 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 radiator sharing antenna via the gap;
feeding a first radio frequency signal through a first feeding point of the radiator sharing antenna to the first sub-radiator of the radiator sharing antenna;
generating a first operating band signal through resonance of the first sub-radiator;
generating a second operating band signal through parasitic resonance of the second sub-radiator;
feeding a second radio frequency signal through a second feeding point of the radiator sharing antenna to the second sub-radiator;
generating a third operating band signal through resonance of the second sub-radiator; and
generating a fourth operating band signal through parasitic resonance of the first sub-radiator.

### Claim 19 (depends on 18)

The radio frequency transmission method of claim 18, wherein the operating band generated through resonance of the first sub-radiator and the parasitic resonance of the second sub-radiator comprises a Wi-Fi band and a sub-sixth generation technology standard (6G) band.

### Claim 20 (depends on 18)

The radio frequency transmission method of claim 18, wherein the operating band generated through the resonance of the second sub-radiator and the parasitic resonance of the first sub-radiator comprises a Global Positioning System (GPS) L5 band, and a GPS L1 band.