# US 12,218,422 B2 · Antenna device

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- Number: US 12,218,422 B2
- Document ID: US12218422B2
- Status: Granted
- Kind: B2
- Application number: 18/246,112
- Filed: 2021-08-03
- Published: 2023-11-16
- Granted: 2025-02-04
- Earliest claimed: 2020-09-25
- Assignees: Autonetworks Technologies, Ltd.; Sumitomo Wiring Systems, Ltd.; Sumitomo Electric Industries, Ltd.
- Applicants: AutoNetworks Technologies, Ltd.; Sumitomo Wiring Systems, Ltd.; Sumitomo Electric Industries, Ltd.
- Inventors: Shuhei Terada; Norichika Oomi; Kosuke Sone; Yasuyuki Yamamoto; Ai Takehisa; Ichiro Kuwayama; Suguru Yamagishi; Yutaro Miki
- Web page: https://patentgrep.com/patent/US12218422B2

## CPC

- H01Q 1/48: Earthing means; Earth screens; Counterpoises
- H01Q 13/08: Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
- 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 1/50: Structural association of antennas with earthing switches, lead-in devices or lightning protectors
- H01Q 9/0457: {electromagnetically coupled to the feed line}
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)

## Abstract

An antenna device includes: a conductive ground conductor plate; a plate-shaped radiating element disposed without being in contact with the ground conductor plate; a feeding line including a conductor and a shield member that surrounds the conductor, the shield member being connected to the ground conductor plate; and a conductive feeding element that includes a facing plate portion that faces the radiating element with an air layer provided therebetween, and is connected to the conductor.

## Claims

### Claim 1

An antenna device comprising:
a conductive ground conductor plate;
a plate-shaped radiating element disposed without being in contact with the ground conductor plate;
a feeding line including a conductor and a shield member that surrounds the conductor, the shield member being connected to the ground conductor plate;
a conductive feeding element that includes a facing plate portion that faces the radiating element with a dielectric layer provided therebetween, and is connected to the conductor;
a positioning member with which the radiating element and the facing plate portion are positioned;
a first positioning surface formed in the positioning member, the radiating element being fixed to the first positioning surface while being in surface contact with the first positioning surface; and
a front surface recess portion formed in the positioning member and being a recess formed in a part of the first positioning surface, wherein
the facing plate portion is contained in the front surface recess portion.

### Claim 2 (depends on 1)

The antenna device according to claim 1, wherein the feeding line is attached penetrating the ground conductor plate.

### Claim 3 (depends on 2)

The antenna device according to claim 2, wherein
the facing plate portion has a circular shape, and
the facing plate portion is coaxially attached to the conductor.

### Claim 4 (depends on 1)

The antenna device according to claim 1, wherein
the facing plate portion has a circular shape, and
the facing plate portion is coaxially attached to the conductor.

### Claim 5

An antenna device comprising:
a conductive ground conductor plate;
a plate-shaped radiating element disposed without being in contact with the ground conductor plate;
a feeding line including a conductor and a shield member that surrounds the conductor, the shield member being connected to the ground conductor plate;
a conductive feeding element that includes a facing plate portion that faces the radiating element with a dielectric layer provided in between, and is connected to the conductor;
a positioning member with which the radiating element and the facing plate portion are positioned; and
a containing recess portion formed in the positioning member and containing the feeding element, wherein
the containing recess portion includes a front surface recess portion opened to an outer circumference surface of the positioning member and an outer side surface recess portion opened in the outer circumference surface of the positioning member,
the front surface recess portion and the outer side surface recess portion communicate with each other,
the facing plate portion is contained in the front surface recess portion, and
the conductor is contained in the outer side surface recess portion.

### Claim 6 (depends on 5)

The antenna device according to claim 5, wherein the positioning member and the feeding line are fixed to the ground conductor plate.

### Claim 7 (depends on 6)

The antenna device according to claim 6, wherein
the facing plate portion has a circular shape, and
the facing plate portion is coaxially attached to the conductor.

### Claim 8 (depends on 5)

The antenna device according to claim 5, wherein
the facing plate portion has a circular shape, and
the facing plate portion is coaxially attached to the conductor.