# US 12,119,553 B2 · Antenna device and electronic equipment

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- Number: US 12,119,553 B2
- Document ID: US12119553B2
- Status: Granted
- Kind: B2
- Application number: 18/075,571
- Filed: 2022-12-06
- Published: 2023-03-30
- Granted: 2024-10-15
- Earliest claimed: 2020-06-09
- Assignees: Fcnt Limited
- Applicants: Fcnt Limited
- Inventors: Yohei Koga; Yasumitsu Ban; Manabu Yoshikawa
- Web page: https://patentgrep.com/patent/US12119553B2

## CPC

- H01Q 1/243: {with built-in antennas}
- H01Q 21/0075: {Stripline fed arrays (H01Q21/065 takes precedence)}
- H01Q 1/2291: {used in Bluetooth® or Wi-Fi® devices of Wireless Local Area Networks [WLAN] (H01Q1/241 takes precedence; WLAN in general H04W)}
- H01Q 5/307: Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q 9/30: with feed to end of elongated active element, e.g. unipole (H01Q9/44 takes precedence)
- H01Q 13/085: {Slot-line radiating ends}
- H01Q 13/10: Resonant slot antennas
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)

## Abstract

An antenna device includes a first antenna having a length corresponding to a first frequency, and arranged along a ground, a second antenna formed by a slot penetrating metal constituting the first antenna, and having a slot length corresponding to a second frequency higher than the first frequency, a first feeder wire for the first frequency, connected from the ground to the first antenna, a metal element for electromagnetic field coupling, arranged in a non-contact state relative to the second antenna, between the slot and the ground; and a second feeder wire for the second frequency, connected from the ground to the metal element.

## Claims

### Claim 1

An antenna device comprising:
a first antenna having a length corresponding to a first frequency, and arranged along a ground;
a second antenna formed by a slot penetrating metal constituting the first antenna, and having a slot length corresponding to a second frequency higher than the first frequency;
a first feeder wire for the first frequency, connected from the ground to the first antenna;
a metal element for electromagnetic field coupling, arranged in a non-contact state relative to the second antenna, between the slot and the ground; and
a second feeder wire for the second frequency, connected from the ground to the metal element.

### Claim 2 (depends on 1)

The antenna device according to claim 1, wherein
the metal element is metal extending along a longitudinal direction of the slot.

### Claim 3 (depends on 1)

The antenna device according to claim 1, wherein
the first antenna has a length one fourth of a wavelength corresponding to the first frequency, and
the second antenna has a length one half of a wavelength corresponding to the second frequency.

### Claim 4 (depends on 1)

The antenna device according to claim 1, wherein
the metal element is arranged at a position closer to one side than another side from among two long sides forming an edge of an opening portion of the slot.

### Claim 5 (depends on 1)

The antenna device according to claim 1, wherein
the metal element has a monopole shape, in which the second feeder wire is connected to only one of both ends in a longitudinal direction thereof.

### Claim 6 (depends on 1)

The antenna device according to claim 1, wherein
the metal element has a loop shape.

### Claim 7 (depends on 1)

The antenna device according to claim 1, wherein
the second feeder wire is connected to the metal element near a center of the slot in a longitudinal direction thereof.

### Claim 8 (depends on 1)

The antenna device according to claim 1, wherein
the metal element has one end in the longitudinal direction at a position near the center of the slot in the longitudinal direction thereof.

### Claim 9 (depends on 1)

The antenna device according to claim 1, wherein
the metal element is connected to the second feeder wire via a rectification circuit.

### Claim 10 (depends on 1)

The antenna device according to claim 1, wherein
a dielectric material is filled in the slot.

### Claim 11 (depends on 1)

The antenna device according to claim 1, further comprising a third antenna arranged between the slot and the ground so that a main radiating direction thereof is oriented toward the slot.

### Claim 12 (depends on 1)

Electronic equipment comprising the antenna device according to claim 1.

### Claim 13 (depends on 12)

The electronic equipment according to claim 12, further comprising a housing partially formed of metal constituting the first antenna.