公开(公告)号：US20230420851A1

公开(公告)日：2023-12-28

申请号：US18462331

申请日：2023-09-06

Applicant: DENSO CORPORATION

Inventor： Daiju USHIKOSHI ,  Takuya YAMASHITA ,  Shiro KOIDE

IPC: H01Q9/04 ,  H01Q1/48 ,  H01Q1/52 ,  H01Q1/24

CPC classification number: H01Q9/0421 ,  H01Q1/48 ,  H01Q9/045 ,  H01Q1/526 ,  H01Q1/24

Abstract: An antenna device includes a ground plate, a line feeding element provided with a feeding point, first and second mushroom cells. Each mushroom cell includes a counter conductor plate disposed at a predetermined interval from the ground plate, and a short circuit portion electrically connecting the counter conductor plate and the ground plate. Each mushroom cell causes parallel resonance at a predetermined target frequency using an inductance of the short circuit portion and an electrostatic capacitance formed by the ground plate and the counter conductor plate. The line feeding element is disposed at an interval from the counter conductor plate of each mushroom cell, and the interval is less than a predetermined coupling limit value.

公开(公告)号：US20210359405A1

公开(公告)日：2021-11-18

申请号：US17381864

申请日：2021-07-21

Applicant: DENSO CORPORATION

Inventor： Takuya YAMASHITA ,  Shiro KOIDE

IPC: H01Q1/52 ,  H01Q9/42 ,  H01Q1/32

Abstract: A wireless communication device includes an antenna, a communication module and a shield case. The antenna is disposed on an antenna board. The communication module is connected to the antenna and executes a wireless communication. The shield case stores the communication module inside the shield case. The antenna board is disposed to be in thermal contact with the shield case.

公开(公告)号：US20210336318A1

公开(公告)日：2021-10-28

申请号：US17368959

申请日：2021-07-07

Applicant: DENSO CORPORATION

Inventor： Takuya YAMASHITA ,  Toru KOIKE

IPC: H01P1/30 ,  H04W4/46 ,  H01Q1/22

Abstract: A communication device for vehicle includes a housing installed in a vehicle, a communication unit housed in the housing, and a heat dissipation component provided in a heat conductive state with the communication unit. The heat dissipation component has a heat dissipation portion configured to function as an antenna of the communication unit.

公开(公告)号：US20230066781A1

公开(公告)日：2023-03-02

申请号：US17982254

申请日：2022-11-07

Applicant: DENSO CORPORATION

Inventor： Youhei SEKIYA ,  Yuzi SUGIMOTO ,  Masakazu IKEDA ,  Yuuji KAKUYA ,  Ryuichi ARAI ,  Shirou KOIDE ,  Takuya YAMASHITA ,  Hiroyuki IZUMI

IPC: H01Q9/04 ,  H01Q21/06

Abstract: An antenna device includes: a first antenna having a directional gain at a low elevation angle higher than the directional gain at a high elevation angle; a second antenna having the directional gain at the high elevation angle higher than the first antenna, transmitting and receiving a radio wave having a vibration direction of an electric field intersecting with a radio wave transmitted and received by the first antenna; and a third antenna having the directional gain at the high elevation angle higher than the first antenna, and transmitting and receiving a radio wave having a vibration direction of an electric field intersecting with the radio wave transmitted and received by the second antenna.

公开(公告)号：US20220344800A1

公开(公告)日：2022-10-27

申请号：US17640349

申请日：2020-08-05

Applicant: YOKOWO CO., LTD. ,  DENSO CORPORATION

Inventor： Noritaka TERASHITA ,  Motohisa ONO ,  Toru KOIKE ,  Takuya YAMASHITA

IPC: H01Q1/32 ,  H01Q21/29 ,  H01Q5/40

Abstract: A vehicle antenna device includes a plurality of antennas in an accommodating space surrounded by a case and an antenna base, and has a height of 70 mm or less from an outer surface of a vehicle when attached to the outer surface of a vehicle. The vehicle antenna device includes a first substrate on which a first patch antenna is mounted, and a second substrate on which a second patch antenna is mounted. The first substrate is provided at a position higher than the second substrate.

公开(公告)号：US20220166493A1

公开(公告)日：2022-05-26

申请号：US17671291

申请日：2022-02-14

Applicant: DENSO CORPORATION

Inventor： Shinichi YOKOI ,  Shirou KOIDE ,  Takuya YAMASHITA

IPC: H04B7/155 ,  H01Q1/32 ,  H01Q9/04

Abstract: An antenna device includes: a plurality of antenna elements for a plurality of communication systems; a housing that houses the plurality of antenna elements; and a digital signal processing circuit connected to one of the plurality of antenna elements and configured to perform a demodulation process to demodulate an analog signal received by the one of the plurality of antenna elements to obtain a digital signal, or/and a modulation process to modulate a digital signal to an analog signal and output the modulated analog signal to the one of the plurality of antenna elements. At least one of the plurality of antenna elements communicates with outside of the antenna device by an analog signal on a signal line connected to the at least one of the plurality of antenna elements.