# US 8,542,152 B2 · Multi-band antenna

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- Number: US 8,542,152 B2
- Document ID: US8542152B2
- Status: Granted
- Kind: B2
- Application number: 13/004,253
- Filed: 2011-01-11
- Published: 2012-07-12
- Granted: 2013-09-24
- Earliest claimed: 2011-01-11
- Assignees: Auden Techno Corp.
- Applicants: Chih-Yin Yu; Shih-Chi Lai; Chia-Lun Tang; Jia-Yi Sze
- Inventors: Chih-Yin Yu; Shih-Chi Lai; Chia-Lun Tang; Jia-Yi Sze
- Web page: https://patentgrep.com/patent/US8542152B2

## CPC

- H01Q 9/0471: {Non-planar, stepped or wedge-shaped patch}
- H01Q 1/243: {with built-in antennas}
- H01Q 5/357: using a single feed point
- H01Q 9/42: with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)

## Abstract

A multi-frequency antenna includes a microwave substrate, a first antenna unit, a second antenna unit, a third antenna unit and a grounding unit. The first antenna unit, the second antenna unit, and the third antenna unit are disposed on the microwave substrate surface. The grounding unit is disposed at an edge on the surface of the microwave substrate. The grounding unit is in connection with the second antenna unit. The second antenna unit and the third antenna unit are bent to form perpendicular structures to the microwave substrate. The compact arrangement reduces the physical footprint of the antenna module to enable fitment in a wide range of products having tight special constraint.

## Claims

### Claim 1

A multi-band antenna comprising:
a substrate;
a first antenna unit disposed on a surface of the substrate having a feeding point, wherein the first antenna unit includes a first extended segment, and a first distal segment, wherein the first distal segment is connected to the first extended segment;
a second antenna unit disposed on the surface of the substrate, wherein the second antenna unit includes a second extended segment, a second bent segment, a second straight segment, and a second distal segment;
a third antenna unit disposed on the surface of the substrate in connection with the first antenna unit, wherein the third antenna unit includes a third extended segment, a third bent segment, and a third distal segment, and wherein the third extended segment of the third antenna unit includes a first section, a second section, a third section, a fourth section, and a fifth section subsequently interconnected, wherein the third distal segment includes a sixth section, a seventh section, an eighth section, and a ninth section subsequently interconnected; and
a grounding unit disposed on the substrate, wherein one edge of the grounding unit connects to the second antenna unit.

### Claim 2 (depends on 1)

The multi-band antenna of claim 1 wherein a gap between the second extended segment and the first distal segment is 1 mm.

### Claim 3 (depends on 1)

The multi-band antenna of claim 1 wherein the first distal segment is perpendicular to the first extended segment and the third extended segment is perpendicular to the first extended segment.

### Claim 4 (depends on 1)

The multi-band antenna of claim 1 wherein the second antenna unit and the third antenna unit are respectively bent along an edge of the substrate to form perpendicular structures with respect to the substrate.

### Claim 5 (depends on 1)

The multi-band antenna of claim 1 wherein the first antenna unit is a L-shaped metallic micro-strip, the second antenna unit is a metallic micro-strip, and the third antenna unit is a U-shaped metallic micro-strip.

### Claim 6 (depends on 1)

The multi-band antenna of claim 1 wherein the grounding unit is a metallic foil disposed on the surface of the substrate, and the one edge of the grounding unit connected with the second antenna unit.