# US 2021/0242584 A1 · Antenna device having a capacitive loading element

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- Number: US 2021/0242584 A1
- Document ID: US20210242584A1
- Status: Published application
- Kind: A1
- Application number: 17/235,970
- Filed: 2021-04-21
- Published: 2021-08-05
- Earliest claimed: 2017-02-23
- Assignees: Yokowo Co., Ltd.
- Applicants: Yokowo Co., Ltd.
- Inventors: Noritaka TERASHITA; Motohisa ONO
- Web page: https://patentgrep.com/patent/US20210242584A1

## CPC

- H01Q 5/307: Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q 1/3233: {particular used as part of a sensor or in a security system, e.g. for automotive radar, navigation systems}
- H01Q 1/362: {for broadside radiating helical antennas}
- H01Q 1/521: {reducing the coupling between adjacent antennas}
- H01Q 9/0407: {Substantially flat resonant element parallel to ground plane, e.g. patch antenna (dipole H01Q9/285; monopole H01Q9/40)}
- H01Q 9/36: with top loading
- H01Q 21/30: Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
- H01Q 1/3275: {mounted on a horizontal surface of the vehicle, e.g. on roof, hood, trunk}
- H01Q 1/42: Housings not intimately mechanically associated with radiating elements, e.g. radome
- H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72)

## Abstract

An antenna device includes a case, a first antenna and a second antenna in the case, the second antenna including a capacitance loading element. The capacitance loading element includes an inclined portion which extends from a front-upper side toward a rear-lower side at a front side of the capacitance loading element. The first antenna is provided in a front side with respect to the inclined portion.

## Claims

### Claim 1

An antenna device comprising:
a case; and
a first antenna and a second antenna provided in the case, wherein
the second antenna includes a capacitance loading element,
the capacitance loading element includes an inclined portion which extends from a front-upper side toward a rear-lower side at a front side of the capacitance loading element, and
the first antenna is provided in a front side with respect to the inclined portion.

### Claim 2 (depends on 1)

The antenna device according to claim 1, wherein
the first antenna is provided in a lower side with respect to the capacitance loading element.

### Claim 3 (depends on 1)

The antenna device according to claim 1, wherein
the first antenna is a GNSS antenna.

### Claim 4 (depends on 1)

The antenna device according to claim 1, wherein
the capacitance loading element further includes an upper extension portion at a rear side of the capacitance loading element.

### Claim 5 (depends on 1)

The antenna device according to claim 1, wherein the capacitance loading element includes a right plate-like portion and a left plate-like portion that are separate portions.

### Claim 6 (depends on 1)

The antenna device according to claim 1, further comprising:
a base, wherein
the first antenna is provided on the base, and
the capacitance loading element is disposed above the base.

### Claim 7 (depends on 1)

The antenna device according to claim 1, wherein
the first antenna is an antenna configured to receive a satellite signal.

### Claim 8 (depends on 1)

The antenna device according to claim 1, wherein
the first antenna is a planer antenna.

### Claim 9 (depends on 1)

The antenna device according to claim 1, wherein
the second antenna is an AM/FM antenna.

### Claim 10 (depends on 1)

The antenna device according to claim 1, wherein
the capacitance loading element has a meandering portion.

### Claim 11 (depends on 1)

The antenna device according to claim 1, wherein
the front side of the capacitance loading element includes a turning around part turning around in a direction different from a front-rear direction and a top-bottom direction of the antenna device, and,
the turning around part extends parallel to the inclined portion.

### Claim 12

An antenna device comprising:
a case;
a first antenna and a second antenna provided in the case; and
a capacitance loading element,
the capacitance loading element includes an inclined portion which extends from a front-upper side toward a rear-lower side at a front side of the capacitance loading element, and
the first antenna is provided in a front side with respect to the inclined portion.

### Claim 13 (depends on 12)

The antenna device according to claim 12, wherein
the first antenna is provided in a lower side with respect to the capacitance loading element.

### Claim 14 (depends on 12)

The antenna device according to claim 12, wherein
the first antenna is a GNSS antenna.

### Claim 15 (depends on 12)

The antenna device according to claim 12, wherein
the capacitance loading element further includes an upper extension portion at a rear side of the capacitance loading element.

### Claim 16 (depends on 12)

The antenna device according to claim 12, wherein the capacitance loading element includes a right plate-like portion and a left plate-like portion that are separate portions.

### Claim 17 (depends on 12)

The antenna device according to claim 12, wherein
the first antenna is provided in a lower side with respect to the second antenna.

### Claim 18 (depends on 12)

The antenna device according to claim 12, wherein
the first antenna is provided in a front side with respect to the second antenna.

### Claim 19 (depends on 12)

The antenna device according to claim 12, wherein
the second antenna is between the first antenna and the capacitance loading element in a front-rear direction.

### Claim 20 (depends on 12)

The antenna device according to claim 12, wherein
the second antenna is provided in a front side with respect to the inclined portion.

### Claim 21

An antenna device comprising:
a case; and
a first antenna and a second antenna provided in the case, wherein
the second antenna includes a capacitance loading element, and
the capacitance loading element includes an inclined portion which is inclined when viewed from a direction perpendicular to both of an arrangement direction of the first antenna and the second antenna and an upper-lower direction at a front side of the capacitance loading element.
