# US 12,113,292 B2 · Antenna device

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- Number: US 12,113,292 B2
- Document ID: US12113292B2
- Status: Granted
- Kind: B2
- Application number: 17/877,894
- Filed: 2022-07-30
- Published: 2022-11-17
- Granted: 2024-10-08
- Earliest claimed: 2020-02-13
- Assignees: Panasonic Intellectual Property Management Co., Ltd.
- Applicants: Panasonic Intellectual Property Management Co., Ltd.
- Inventors: Yoshihiro Kanasaki; Takahiro Ochi; Kazuya Tani
- Web page: https://patentgrep.com/patent/US12113292B2

## CPC

- H01Q 9/42: with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
- H01Q 21/28: Combinations of substantially independent non-interacting antenna units or systems {(multiple beam H01Q25/00)}
- H01Q 1/2266: {disposed inside the computer}
- H01Q 1/521: {reducing the coupling between adjacent antennas}
- H01Q 5/35: using two or more simultaneously fed points
- H01Q 5/378: Combination of fed elements with parasitic elements
- H01Q 9/0421: {with a shorting wall or a shorting pin at one end of the element (H01Q9/0414 takes precedence)}
- H01Q 9/30: with feed to end of elongated active element, e.g. unipole (H01Q9/44 takes precedence)
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)

## Abstract

An antenna device is disposed on a first, a second, and a third surfaces, and includes a first antenna disposed on the first and the third surfaces, a second antenna disposed on the second surface, and a ground line disposed on the first surface. The first antenna includes a first feedpoint disposed on the first surface, a first element disposed on the first surface, and extending from the first feedpoint to the third surface, and a second element disposed on the third surface, and extending in a direction along the first surface from an end of the first element. The second antenna includes a second feedpoint disposed in a manner separated from the first feedpoint in a direction parallel with the first and the second surfaces, and an antenna element extending from the second feedpoint. The ground line includes a ground line element capacitively coupled to the first antenna.

## Claims

### Claim 1

An antenna device disposed on a first surface, a second surface parallel with the first surface, and a third surface connecting the first surface and the second surface and perpendicular to the first surface and to the second surface, the antenna device comprising:
a first antenna disposed on the first surface and the third surface;
a second antenna disposed on the second surface; and
a ground line disposed on the first surface, wherein the first antenna includes:
a first feedpoint disposed on the first surface;
a first element, the first element being conductive, being disposed on the first surface, and extending from the first feedpoint to the third surface; and
a second element, the second element being conductive, being disposed on the third surface, and extending in a direction along the first surface from an end of the first element,
the second antenna includes:
a second feedpoint disposed in a manner separated from the first feedpoint in a direction parallel with the first surface and the second surface; and
an antenna element, the antenna element being conductive and extending from the second feedpoint, and
the ground line includes:
a ground point grounded; and
a ground line element, the ground line element being conductive, being connected to the ground point, including a portion extending in a direction along the first antenna, and being capacitively coupled to the first antenna,
wherein
the portion of the ground line element, the portion extending in the direction along the first antenna, includes a portion extending in a direction along the second element,
a distance between the portion extending in the direction along the second element and the second element is less than or equal to 1/100 of a wavelength corresponding to a resonance frequency band of the first antenna, and
the ground point is connected to a ground member grounded, and a loop antenna is formed by the first antenna, the ground line element, and the ground member.

### Claim 2 (depends on 1)

The antenna device according to Claim 1, wherein an electrical length of the loop antenna is ⅜ of the wavelength corresponding to the resonance frequency band of the first antenna.

### Claim 3 (depends on 1)

The antenna device according to claim 1, wherein the ground line is disposed at a position facing the second antenna.

### Claim 4 (depends on 1)

The antenna device according to claim 1, wherein an electrical length of the ground line element is ¼ of a wavelength corresponding to a resonance frequency band of the second antenna.

### Claim 5 (depends on 1)

The antenna device according to claim 1, wherein the ground line element includes a portion extending in a direction along a portion including an open end of the second element.

### Claim 6 (depends on 5)

The antenna device according to claim 5, wherein, in the portion of the ground line element, the portion extending in the direction along the portion including the open end of the second element, a direction from a near end of the ground line element to an open end of the ground line element is reversal of a direction from a connected end of the second element to the open end of the second element, with the near end being near the ground point, and the connected end being connected to the first element.

### Claim 7 (depends on 1)

The antenna device according to claim 1, wherein a distance between the first surface and the second surface is less than or equal to 1/10 of a wavelength corresponding to a resonance frequency band of the first antenna.