WO-2026094730-A1 - ANTENNA DEVICE

Abstract

This antenna device comprises: an antenna having a dielectric layer and a conductive layer provided on the dielectric layer; and a guide member having a curved surface. The conductive layer is at least partially guided along the curved surface.

Inventors

• MOCHIZUKI KANTA
• SONE TAKAYUKI
• NAKAMURA DAISUKE
• IWAI HIROSHI

Assignees

• 株式会社ヨコオ

Dates

Publication Date

20260507

Application Date

20251022

Priority Date

20241029

Claims (5)

1. An antenna having a dielectric layer and a conductive layer provided on the dielectric layer, A guide member having a curved surface, Equipped with, An antenna device in which the conductive layer is at least partially guided along the curved surface.
2. The antenna device according to claim 1, wherein the amount per unit area of conductors constituting the portion of the conductive layer guided along the curved surface is greater than the amount per unit area of conductors constituting the other portion of the conductive layer extending substantially flat.
3. The antenna device according to claim 1 or 2, wherein the curved surface of the guide member extends in an S-shaped curve.
4. The guide member rotates, as described in claim 1 or 2.
5. The antenna device according to claim 1 or 2, wherein the guide member has a plurality of members.

Description

Antenna equipment This invention relates to an antenna device. In recent years, various antenna devices have been developed. These antenna devices may include an antenna comprising a dielectric layer and a conductive layer provided on the dielectric layer. Patent Document 1 describes an antenna element. The antenna element comprises a dielectric layer and an antenna conductive layer formed on the dielectric layer. The conductive layer has an antenna pattern including a radiator and a transmission line. The antenna pattern is formed as a mesh structure defined by multiple conductive wires. Patent Document 2 describes a vehicle antenna device. The antenna device comprises a dielectric plate such as a glass plate for vehicles, an antenna attached to the dielectric plate, and a transmission line fixed to the dielectric plate. This is an exploded perspective view of the antenna device according to Embodiment 1.This is a schematic plan view showing an example of the microscopic structure of the antenna at position α in Figure 1 according to Embodiment 1.This is a side view of a part of the antenna device according to Embodiment 1.This is a perspective view of the antenna device according to Embodiment 1.This is a perspective view of the antenna device according to modified example 1.This graph shows the frequency characteristics of radiation efficiency for an antenna with an edge pattern and an antenna without an edge pattern.This is a perspective view of an antenna device according to Modification 2, illustrating how the antenna elements are positioned at different heights relative to the case using a first spacer, a second spacer, and a connecting block.This is a perspective view of an antenna device according to Modification 2, illustrating how the antenna elements are positioned at different heights relative to the case using a first spacer, a second spacer, and a connecting block.This is a perspective view of the antenna device according to modified example 3.This is a perspective view of the antenna device according to modified example 4.This is a perspective view of the antenna device according to modified example 5.This is a perspective view of the antenna device according to modified example 6.This is an exploded perspective view of the antenna device according to Embodiment 2.This is a side view of a part of the antenna device according to Embodiment 2.This is a top view of a part of the antenna device according to Embodiment 2.This is a perspective view of modified examples of the first and second transmission lines.This graph shows the frequency characteristics of the radiation efficiency of the substrate according to Embodiment 2 when no antenna is installed.This graph shows the frequency characteristics of the antenna device according to Embodiment 2, in which both the antenna and the circuit board are provided.This graph shows the frequency characteristics of the radiation efficiency of the antenna device in patterns 1, 2, and 3 of the circuit board.This graph shows the frequency characteristics of the voltage standing wave ratio (VSWR) of the antenna device in patterns 1, 2, and 3 of the circuit board.This is a Smith chart for illustrating the impedance matching of the antenna according to Embodiment 2.This is a plan view of the antenna device according to Embodiment 3.This is a side view of a part of the antenna device according to Embodiment 3.This graph shows the frequency characteristics of radiation efficiency for an antenna in which the first and second antenna elements are arranged asymmetrically, and for an antenna in which the first and second antenna elements are arranged symmetrically.This graph shows the frequency characteristics of the VSWR for an antenna in which the first and second antenna elements are arranged asymmetrically, and for an antenna in which the first and second antenna elements are arranged symmetrically. The embodiments of the present invention will be described below with reference to the drawings. In all drawings, similar components are denoted by the same reference numerals, and their descriptions are omitted where appropriate. Figure 1 is an exploded perspective view of the antenna device 1A according to Embodiment 1. Figure 2 is a schematic plan view showing an example of the microscopic structure of the antenna 10A at position α in Figure 1 according to Embodiment 1. Figure 3 is a side view of a part of the antenna device 1A according to Embodiment 1. Note that in Figure 3, for the sake of clarity, the antenna device 1A is shown as a side view with the substrate 40A and antenna 10A spaced apart from each other. However, in the actual product form of the antenna device 1A, the substrate 40A and antenna 10A are not spaced apart, and the power supply pattern 41A, located on the +Z side of the substrate 40A, is sandwiched between the dielectric layer 11A and the substrate 40A. To explain the directions, we define the X, Y, and Z directions. The Z direction is the h