# US 2017/0288296 A1 · Wifi antenna device

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- Number: US 2017/0288296 A1
- Document ID: US20170288296A1
- Status: Published application
- Kind: A1
- Application number: 15/451,988
- Filed: 2017-03-07
- Published: 2017-10-05
- Earliest claimed: 2016-03-31
- Assignees: Molex Incorporated
- Applicants: Molex, LLC
- Inventors: Guang-Yong ZHONG; Soon-Kuan TAN
- Web page: https://patentgrep.com/patent/US20170288296A1

## CPC

- 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 1/2258: {used with computer equipment}
- H01Q 1/2266: {disposed inside the computer}
- H01Q 1/36: Structural form of radiating elements, e.g. cone, spiral, umbrella; {Particular materials used therewith}(H01Q1/08, H01Q1/14 take precedence)
- H01Q 1/48: Earthing means; Earth screens; Counterpoises
- H01Q 21/30: Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)

## Abstract

The present disclosure discloses a WIFI antenna device, the WIFI antenna device includes a carrier, a grounding portion, a first radiation portion, a second radiation portion and a third radiation portion which all are provided on the carrier. The first radiation portion, the second radiation portion and the third radiation portion are coupled to the grounding portion. The coupling portion couples an electrical signal to the first radiation portion, the second radiation portion and the third radiation portion. The first radiation portion, the second radiation portion and the third radiation portion convert the electrical signal into the radiation signal. The first radiation portion determines a low frequency resonance point of a radiation signal emitted by the WIFI antenna device. The second radiation portion determines a first high frequency resonance point of the radiation signal. The third radiation portion determines a second high frequency resonance point of the radiation signal.

## Claims

### Claim 1

A WIFI antenna device, comprising:
a carrier;
a grounding portion provided on the carrier;
a first radiation portion provided on the carrier and coupled to the grounding portion, the first radiation portion determining a low frequency resonance point of a radiation signal emitted by the WIFI antenna device, the low frequency resonance point defining a bandwidth of 2.4-2.84 GHz;
a second radiation portion provided on the carrier and coupled to the grounding portion, the second radiation portion determining a first high frequency resonance point of the radiation signal;
a third radiation portion provided on the carrier and coupled to the grounding portion, the third radiation portion determining a second high frequency resonance point of the radiation signal, the first high frequency resonance point and the second high frequency resonance point defining a bandwidth of 4.9-5.85 GHz; and
a coupling portion coupling an electrical signal to the first radiation portion, the second radiation portion and the third radiation portion, the first radiation portion, the second radiation portion and the third radiation portion converting the electrical signal into the radiation signal.

### Claim 2 (depends on 1)

The WIFI antenna device according to claim 1, wherein the coupling portion is independent of any one of the first radiation portion, the second radiation portion, the third radiation portion and the grounding portion.

### Claim 3 (depends on 1)

The WIFI antenna device according to claim 1, wherein a length of the coupling portion less than one fourth of a wavelength corresponding to an operative frequency of the radiation signal.

### Claim 4 (depends on 1)

The WIFI antenna device according to claim 1, wherein the coupling portion is not used to convert the electrical signal into the radiation signal.

### Claim 5 (depends on 1)

The WIFI antenna device according to claim 1, wherein a shape of the coupling portion is any one of a T-shape, a L-shape and a minus sign shape.

### Claim 6 (depends on 1)

The WIFI antenna device according to claim 1, wherein the first radiation portion and the second radiation portion define a T-shaped structure, and the third radiation portion is a L-shaped structure.

### Claim 7 (depends on 6)

The WIFI antenna device according to claim 6, wherein the coupling portion respectively electrically couples with the L-shaped structure and the T-shaped structure.

### Claim 8 (depends on 7)

The WIFI antenna device according to claim 7, wherein the coupling portion is parallel to a part of the first radiation portion, and is parallel to a part of the third radiation portion.

### Claim 9 (depends on 7)

The WIFI antenna device according to claim 7, wherein a length of the first radiation portion is one fourth of a wavelength corresponding to the low frequency resonance point, a length of the second radiation portion is one fourth of a wavelength corresponding to the first high frequency resonance point, a length of the third radiation portion is one fourth of wavelength corresponding to the second high frequency resonance point.

### Claim 10 (depends on 9)

The WIFI antenna device according to claim 9, wherein the length of the first radiation portion is longer than the length of the second radiation portion, and a vertical part of the T-shaped structure is shared by the first radiation portion and the second radiation portion.

### Claim 11 (depends on 9)

The WIFI antenna device according to claim 9, wherein the coupling portion, the first radiation portion, the second radiation portion, the third radiation portion and the grounding portion are provided on a surface of the carrier.

### Claim 12 (depends on 11)

The WIFI antenna device according to claim 11, wherein the grounding portion is electrically connected to a metal plate of an electrical product, the metal plate acts as a reference grounding of the WIFI antenna device.

### Claim 13 (depends on 1)

The WIFI antenna device according to claim 1, wherein the whole coupling portion is positioned on a first surface of the carrier, and the first radiation portion, the second radiation portion, the third radiation portion each have a first part on the first surface of the carrier and a second part on a second surface of the carrier.

### Claim 14 (depends on 13)

The WIFI antenna device according to claim 13, wherein, when the first surface and the second surface are developed on the same plane, at least one of the second part of the first radiation portion and the second part of the second radiation portion is positioned above the coupling portion.

### Claim 15 (depends on 13)

The WIFI antenna device according to claim 13, wherein when the first surface and the second surface are developed on the same plane, the second part of the third radiation portion is positioned above the coupling portion.

### Claim 16 (depends on 1)

The WIFI antenna device according to claim 1, wherein any one of the whole first radiation portion, the whole second radiation portion and the whole third radiation portion is positioned on the same surface