# US 9,882,283 B2 · Plane-shaped antenna with wide band and high radiation efficiency

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 9,882,283 B2
- Document ID: US9882283B2
- Status: Granted
- Kind: B2
- Application number: 14/407,315
- Filed: 2013-06-14
- Published: 2015-06-11
- Granted: 2018-01-30
- Earliest claimed: 2012-06-14
- Assignees: Yamaha Corporation
- Applicants: Yamaha Corporation
- Inventors: Akihiro Kawata
- Web page: https://patentgrep.com/patent/US9882283B2

## CPC

- 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 1/243: {with built-in 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 7/00: Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
- H01Q 9/065: {Microstrip dipole antennas (patch antenna H01Q9/0407)}
- 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

An antenna has the following formed on a plane thereof: a vertical element formed in a vertical direction; a left horizontal element formed on a left side of the vertical element; a right horizontal element formed on a right side of the vertical element; a left short stub that connects the left horizontal element and a left upper corner of a ground pattern; and a right short stub that connects the right horizontal element and a right upper corner of the ground pattern. The right and left horizontal elements have a flat plate shape and a capacity hat.

## Claims

### Claim 1

A planar antenna comprising the following formed on a plane thereof:
a substantially rectangular ground pattern that has an upper side which is below and formed with an antenna element, the antenna element including:
a substantially linear vertical element that is formed from a feed point and in a vertical direction from the upper side of the ground pattern to an upper boundary of the antenna element;
a left branch line that is orthogonally branched to the left from the top of the vertical element to a top of a left substantially rectangular element;
a right branch line that is orthogonally branched to the right from the top of the vertical element to a top of a right substantially rectangular element;
the left substantially rectangular element has a length or width that extends from the upper boundary of the antenna element towards the upper side of the ground pattern, wherein a gap of substantially constant width is formed between the substantially linear vertical element and the left substantially rectangular element;
the right substantially rectangular element has a length or width that extends from the upper boundary of the antenna element towards the upper side of the ground pattern, wherein a gap of substantially constant width is formed between the substantially linear vertical element and the right substantially rectangular element;
a left shorting element that is formed in a meander shape between the upper side of the ground pattern and the upper boundary of the antenna element and connects the bottom of the left substantially rectangular element to the left side of the ground pattern, wherein the left side of the left shorting element conforms to the left side of the ground pattern to form a continuous left side of the planar antenna from the lower side of the ground pattern to the upper boundary of the antenna element; and
a right shorting element that is formed in a meander shape between the upper side of the ground pattern and the upper boundary of the antenna element and connects the bottom of the right substantially rectangular element to the right side of the ground pattern, wherein the right side of the right shorting element conforms to the right side of the ground pattern to form a continuous right side of the planar antenna from the lower side of the ground pattern to the upper boundary of the antenna element.

### Claim 2 (depends on 1)

The antenna according to claim 1, wherein
the right and left substantially rectangular elements have a flat rectangular shape in which a length of the right and left horizontal elements in a direction from the top of the vertical element to the ground pattern is equal to or greater than 1/16 and equal to or less than ⅙ of a resonant wavelength of the antenna.

### Claim 3 (depends on 1)

The antenna according to claim 1, wherein
each of the right and left substantially rectangular elements has a vertical side and a horizontal side which range within 1:2 to 2:1.

### Claim 4 (depends on 1)

The antenna according to claim 1, wherein
a left antenna element constituted by the left substantially rectangular element and the left shorting element is asymmetrical to a right antenna element constituted by the right substantially rectangular element and the right shorting element with respect to the substantially linear vertical element as an axis.

### Claim 5 (depends on 1)

The antenna according to claim 1, further comprising:
capacitors disposed on the right and left substantially rectangular elements.

### Claim 6 (depends on 1)

The antenna according to claim 1, further comprising:
inductors disposed on the right and left shorting elements.