公开(公告)号：US20240322418A1

公开(公告)日：2024-09-26

申请号：US18736493

申请日：2024-06-06

Applicant: AGC Inc.

Inventor： Tomohiro TAKAHASHI ,  Yuki KISHIMOTO

IPC: H01Q1/12 ,  B60J1/00 ,  H01Q1/32 ,  H01Q1/50 ,  H01Q9/04

CPC classification number: H01Q1/1271 ,  H01Q1/325 ,  H01Q1/50 ,  H01Q9/0407 ,  B60J1/001

Abstract: To suppress noise included in an antenna provided on a glass plate.
A vehicle antenna device comprising a glass plate for a vehicle,



a first antenna capable of receiving or transmitting radio waves of a first frequency band, provided on the glass plate, and
an electric circuit which attenuates a signal of a second frequency band including a frequency band higher than the first frequency band,
wherein the first antenna has a first feeding portion to be electrically connected to a signal line of a transmission line and a first element connected to the first feeding portion, and
the electric circuit is provided at least one of between the first feeding portion or the vicinity of the first feeding portion and a ground portion, and between the first feeding portion and the signal line.

公开(公告)号：US20240250404A1

公开(公告)日：2024-07-25

申请号：US18627089

申请日：2024-04-04

Applicant: AGC Inc.

Inventor： Hideaki SHOJI ,  Jun NODA ,  Tomohiro TAKAHASHI

IPC: H01Q1/12 ,  H01Q1/32 ,  H01Q21/28

CPC classification number: H01Q1/1271 ,  H01Q1/3275 ,  H01Q21/28

Abstract: To provide a vehicle antenna device which includes multiple antennas, the frequency bands of radio waves to be transmitted and received by the multiple antennas being at least partially different from each other, proximate to each other and which can reduce the degradation of the transmission/reception sensitivity of each of the multiple antennas.
A vehicle antenna device to be mounted on a vehicle, comprising:



a first antenna capable of transmitting and receiving radio waves of a first frequency band; and
a second antenna proximate to the first antenna and capable of transmitting and receiving radio waves of a second frequency band including a frequency band higher than the first frequency band,
wherein at least one of the first antenna and the second antenna is disposed in or on window glass of the vehicle or in the vicinity of the window glass, and
wherein the second antenna includes a power supply unit to which a high-pass filter is connected.