# US 2014/0198003 A1 · Antenna Device

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- Number: US 2014/0198003 A1
- Document ID: US20140198003A1
- Status: Published application
- Kind: A1
- Application number: 14/153,599
- Filed: 2014-01-13
- Published: 2014-07-17
- Earliest claimed: 2013-01-11
- Assignees: Tyco Electronics Japan G.K.
- Applicants: Tyco Electronics Japan G.K.
- Inventors: Yohei Sakurai
- Web page: https://patentgrep.com/patent/US20140198003A1

## CPC

- H01Q 5/378: Combination of fed elements with parasitic elements
- H01Q 5/321: within a radiating element or between connected radiating elements
- H01Q 5/371: Branching current paths
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)

## Abstract

An antenna device is provided and includes a circuit board, a first linear antenna, and a second linear antenna. The circuit board includes a grounding pattern and a feeding point insulated from the grounding pattern. The first linear antenna is connected to the grounding pattern and includes a first inductive element positioned between distal ends of the first linear antenna. The second linear antenna is connected to the feeding point and capacitively coupled to one of the distal ends of the first linear antenna. The second linear antenna includes a second inductive element positioned proximate a middle section of the second linear antenna.

## Claims

### Claim 1

An antenna device comprising:
a circuit board having a grounding pattern and a feeding point insulated from the grounding pattern;
a first linear antenna connected to the grounding pattern and having a first inductive element positioned between distal ends thereof;
a second linear antenna connected to the feeding point and capacitively coupled to one of the distal ends of the first linear antenna and having a second inductive element positioned proximate a middle section thereof.

### Claim 2 (depends on 1)

The antenna device according to claim 1, wherein the first and second inductive elements are chips.

### Claim 3 (depends on 1)

The antenna device according to claim 1, wherein the first and second inductive elements are conductive patterns.

### Claim 4 (depends on 1)

The antenna device according to claim 1, wherein the first linear antenna includes a first linear antenna portion extending linearly from the grounding pattern.

### Claim 5 (depends on 4)

The antenna device according to claim 4, wherein the first linear antenna includes a second linear antenna portion extending orthogonal from a distal end of the first linear antenna portion.

### Claim 6 (depends on 5)

The antenna device according to claim 5, wherein the second linear antenna includes a third linear antenna portion extending from the feeding point.

### Claim 7 (depends on 6)

The antenna device according to claim 6, wherein the second linear antenna further includes a fourth linear antenna portion extending orthogonal from a distal end of the third linear antenna portion.

### Claim 8 (depends on 7)

The antenna device according to claim 7, further comprising a third antenna extending from the second linear antenna.

### Claim 9 (depends on 8)

The antenna device according to claim 8, wherein the third antenna includes a fifth linear portion extending from the fourth linear antenna portion.

### Claim 10 (depends on 9)

The antenna device according to claim 9, wherein the third antenna further includes a sixth linear portion extending linearly and orthogonal to the fifth linear portion.

### Claim 11 (depends on 10)

The antenna device according to claim 10, wherein the third antenna further includes a seventh linear portion extending linearly from a distal end of the sixth linear portion.

### Claim 12 (depends on 11)

The antenna device according to claim 11, wherein the third antenna further includes an eighth linear portion extending orthogonal to the seventh linear portion from a distal end thereof.

### Claim 13 (depends on 1)

The antenna device according to claim 1, further comprising a third antenna extending from the second linear antenna.