# US 11,444,369 B1 · Antenna structure

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- Number: US 11,444,369 B1
- Document ID: US11444369B1
- Status: Granted
- Kind: B1
- Application number: 17/328,870
- Filed: 2021-05-24
- Granted: 2022-09-13
- Earliest claimed: 2021-04-27
- Assignees: Quanta Computer Inc.
- Applicants: Quanta Computer Inc.
- Inventors: Yi-Ling Tseng; Chin-Lung Tsai; Chung-Ting Hung; Kuan-Hsien Lee; Ying-Cong Deng
- Web page: https://patentgrep.com/patent/US11444369B1

## CPC

- H01Q 1/243: {with built-in antennas}
- H01Q 13/10: Resonant slot antennas
- H01Q 1/38: formed by a conductive layer on an insulating support {(patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142)}
- H01Q 5/357: using a single feed point
- H01Q 5/371: Branching current paths
- H01Q 5/378: Combination of fed elements with parasitic elements
- H01Q 9/26: with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength (resonant loop antennas H01Q7/00)
- H01Q 9/40: Element having extended radiating surface
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)

## Abstract

An antenna structure includes a metal mechanism element, a first radiation element, a second radiation element, a third radiation element, and a dielectric substrate. The metal mechanism element has a slot with a first closed end and a second closed end. The first radiation element has a feeding point. The second radiation element is coupled to the feeding point. The second radiation element and the first radiation element substantially extend away from each other. The third radiation element is coupled to a ground voltage. The third radiation element extends across the slot of the metal mechanism element. The dielectric substrate has a first surface and a second surface opposite to each other. The first radiation element, the second radiation element, and the third radiation element are disposed on the first surface of the dielectric substrate. The second surface of the dielectric substrate is adjacent to the slot.

## Claims

### Claim 1

An antenna structure, comprising:
a metal mechanism element, having a slot, wherein the slot has a first closed end and a second closed end;
a first radiation element, having a feeding point;
a second radiation element, coupled to the feeding point, wherein the second radiation element and the first radiation element substantially extend away from each other;
a third radiation element, coupled to a ground voltage, wherein the third radiation element extends across the slot of the metal mechanism element; and
a dielectric substrate, having a first surface and a second surface opposite to each other, wherein the first radiation element, the second radiation element, and the third radiation element are disposed on the first surface of the dielectric substrate, and the second surface of the dielectric substrate is adjacent to the slot of the metal mechanism element.

### Claim 2 (depends on 1)

The antenna structure as claimed in claim 1, further comprising:
a shorting element, wherein the third radiation element is coupled through the shorting element to the ground voltage, and the ground voltage is provided by the metal mechanism element.

### Claim 3 (depends on 1)

The antenna structure as claimed in claim 1, wherein the first radiation element substantially has a first straight-line shape, and a first vertical projection of the first radiation element at least partially overlaps the slot of the metal mechanism element.

### Claim 4 (depends on 1)

The antenna structure as claimed in claim 1, wherein the second radiation element substantially has a second straight-line shape, and a second vertical projection of the second radiation element at least partially overlaps the slot of the metal mechanism element.

### Claim 5 (depends on 1)

The antenna structure as claimed in claim 1, wherein the third radiation element substantially has a third straight-line shape, and a third vertical projection of the third radiation element at least partially overlaps the slot of the metal mechanism element.

### Claim 6 (depends on 1)

The antenna structure as claimed in claim 1, wherein the antenna structure covers a first frequency band from 600 MHz to 960 MHz, and a second frequency band from 1710 MHz to 2170 MHz.

### Claim 7 (depends on 6)

The antenna structure as claimed in claim 6, wherein a length of the slot of the metal mechanism element is substantially equal to 0.5 wavelength of the first frequency band.

### Claim 8 (depends on 6)

The antenna structure as claimed in claim 6, wherein a length of the first radiation element is substantially equal to 0.25 wavelength of the second frequency band.

### Claim 9 (depends on 6)

The antenna structure as claimed in claim 6, wherein a length of the second radiation element is substantially equal to 0.25 wavelength of the second frequency band.

### Claim 10 (depends on 1)

The antenna structure as claimed in claim 1, wherein a length of the third radiation element is from 12 mm to 22 mm.