Antenna device
AssigneeYokowo Co., Ltd.
InventorsNoritaka Terashita, Yusuke Yokota, Kazuya Fujimaki
Life of this patent
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Abstract
An antenna device includes a first antenna and a second antenna provided in a case. The first antenna includes a first capacitance loading element and is configured to at least one of receive and transmit a signal in a first frequency band. The second antenna includes a second capacitance loading element and is configured to at least one of receive and transmit a signal in a second frequency band. The second frequency band is higher than the first frequency band. The second capacitance loading element is disposed at a front side of the first capacitance loading element.
Claims20
An antenna device, comprising:
- a first antenna and a second antenna provided in a case, wherein
- the first antenna includes a first capacitance loading element and is configured to at least one of receive and transmit a signal in a first frequency band,
- the second antenna includes a second capacitance loading element and is configured to at least one of receive and transmit a signal in a second frequency band,
- the second frequency band is higher than the first frequency band, and
- the second capacitance loading element is disposed at a front side of the first capacitance loading element in a front direction, wherein a front-rear direction is a longitudinal direction of the antenna device and the front direction corresponds to an advancement direction of a vehicle when the antenna device is attached to the vehicle and wherein a left-right direction is perpendicular to the front-rear direction and is a width direction of the antenna device,
- wherein the second antenna comprises a first portion and a second portion, and
- wherein the second portion is a portion that is bent from the first portion in the left-right direction.
An antenna device, comprising:
- a first antenna and a second antenna provided in a case, wherein
- the first antenna includes a first capacitance loading element and is configured to at least one of receive and transmit a signal in a first frequency band,
- the second antenna includes a second capacitance loading element and is configured to at east one of receive and transmit a signal in a second frequency band,
- the second frequency band is higher than the first frequency band, and
- the second capacitance loading element is disposed at a front side of the first capacitance loading element,
- the first antenna includes a first helical element between the first capacitance loading element and a first feeding point,
- the second antenna includes a second helical element between the second capacitance loading element and a second feeding point, and
- an axial direction of the first helical element and an axial direction of the second helical element are substantially parallel to each other.
Dependencies are inferred from the claim text.