US-12620694-B2 - Antenna device and antenna module thereof

US12620694B2US 12620694 B2US12620694 B2US 12620694B2US-12620694-B2

Abstract

A vehicle antenna device and an antenna module thereof are disclosed. The antenna module has an antenna radiation area with a first and second antenna radiation areas, the first antenna radiation area is disposed and adjacent to the second antenna radiation area along a first direction, and has a first length along a second direction, the second antenna radiation area has a second length along the second direction; a first ground area, disposed along the second direction and corresponded to the first antenna radiation area, a first distance along the second direction is between the first ground area and the first antenna radiation area, and a second ground area, disposed along the second direction and corresponded to the second antenna radiation area, a second distance along the second direction is between the second ground area and the second antenna radiation area.

Inventors

Chao Huang
HaoQiang LEI
Xu Zhang
Yansong Chen
YangQiu CAO
Haibo MA

Assignees

LUXSHARE PRECISION INDUSTRY (KUNSHAN) CO., LTD.

Dates

Publication Date: 20260505
Application Date: 20240108
Priority Date: 20230202

Claims (16)

1 . An antenna module, comprising: a substrate, comprising: an antenna radiation area having a first antenna radiation area and a second antenna radiation area, the first antenna radiation area being disposed and adjacent to the second antenna radiation area along a first direction, the first antenna radiation area having a first length along a second direction, the second antenna radiation area having a second length along the second direction, the second length being less than the first length; a first ground area disposed along the second direction and corresponded to the first antenna radiation area, a first distance along the second direction being between the first ground area and the first antenna radiation area; a second ground area disposed along the second direction and corresponded to the second antenna radiation area, a second distance along the second direction being between the second ground area and the second antenna radiation area; and a detection resistor, disposed in between the first antenna radiation area and the first ground area along the first direction, the first antenna radiation area being connected with the first ground area.
2 . The antenna module according to claim 1 , wherein the first length is in a range of 54.3 to 54.7 mm.
3 . The antenna module according to claim 1 , wherein the second length is in a range of 25 to 27 mm.
4 . The antenna module according to claim 1 , wherein the first distance is in a range of 1.5 to 2.5 mm.
5 . The antenna module according to claim 1 , wherein the second distance is in a range of 2 to 3 mm.
6 . The antenna module according to claim 1 , wherein a trace width of the antenna radiation area is equal to or less than 23 mm.
7 . The antenna module according to claim 1 , wherein a feed-in area of the first antenna radiation area is elongated along the second direction to be in between the first ground area and the second ground area.
8 . The antenna module according to claim 1 , wherein the first antenna radiation area has a pattern of ascending stairs.
9 . The antenna module according to claim 1 further comprising: a first variable capacitance, disposed in between the first antenna radiation area and the first ground area along the first direction, the first antenna radiation area being connected with the first ground area; and a second variable capacitance, disposed in between the first antenna radiation area and the second ground area along the first direction, the first antenna radiation area being connected with the second ground area.
10 . A vehicle antenna device, comprising: the antenna module according to claim 1 ; a high speed connector, connected with the antenna module; and an antenna protection box wrapped around the antenna module and exposing the high speed connector.
11 . The vehicle antenna device according to claim 10 , wherein the antenna protection box comprises an upper box and a lower box, which sandwich the antenna module in order to fix the antenna module in the antenna protection box.
12 . The vehicle antenna device according to claim 10 , wherein the antenna protection box is made of Polycarbonate Acrylonitrile Butadiene Styrene Blend.
13 . The antenna module according to claim 1 further comprising: a first variable capacitance, disposed in between the first antenna radiation area and the first ground area along the first direction, the first antenna radiation area being connected with the first ground area.
14 . The antenna module according to claim 13 further comprising: a second variable capacitance, disposed in between the first antenna radiation area and the second ground area along the first direction, the first antenna radiation area being connected with the second ground area.
15 . The antenna module according to claim 1 , wherein the first antenna radiation is connected to the second antenna radiation in the first direction.
16 . An antenna module, comprising: a substrate, comprising: an antenna radiation area having a first antenna radiation area and a second antenna radiation area, the first antenna radiation area being disposed and adjacent to the second antenna radiation area along a first direction, the first antenna radiation area having a first length along a second direction, the second antenna radiation area having a second length along the second direction, the second length being less than the first length; a first ground area disposed along the second direction and corresponded to the first antenna radiation area, a first distance along the second direction being between the first ground area and the first antenna radiation area; a second ground area disposed along the second direction and corresponded to the second antenna radiation area, a second distance along the second direction being between the second ground area and the second antenna radiation area; a first variable capacitance, disposed in between the first antenna radiation area and the first ground area along the first direction, the first antenna radiation area being connected with the first ground area; and a second variable capacitance, disposed in between the first antenna radiation area and the second ground area along the first direction, the first antenna radiation area being connected with the second ground area.

Description

CROSS REFERENCE TO RELATED APPLICATION This application claims the priority benefits of Chinese Patent Application Serial Number 202310152373.X, filed on Feb. 22, 2023, the full disclosure of which is incorporated herein by reference. BACKGROUND Technical Field The present invention is in related to an antenna device and an antenna module thereof, more particularly to a vehicle antenna device and an antenna module thereof. Related Art With the development for the smart car industry, the increasing requirements for wireless communication inside the car, for example, watching video streams or communicating with smart electronic devices, etc. Therefore, the data transmission rate and data transmission amount inside the car are continuously more for the needs than ever. In prior arts, most of the vehicle antennas are limited to the frequency bands of Bluetooth and Wi-Fi 5 according to the frequency band requirements of the existing system. On the other hand, the vehicle antennas are mostly designed as a type of PCB (Printed Circuit Board) antenna for controlling the cost. Based on the design conditions of the PCB antenna, the positions for disposing the wires of the antenna are not many, so as to cause the results of narrow bandwidth and low efficiency. In view of this, how to provide a vehicle antenna device and an antenna module thereof, so that it can be applied to existing Bluetooth and Wi-Fi systems, and more support the ultra-wide-band spectrum range, in order to improve the overall transmission efficiency, is for the problems to be solved in the field. SUMMARY The present invention discloses a vehicle antenna device and an antenna module thereof, which is able to figure out the problems of narrow bandwidth and low efficiency. The present invention provides an antenna module, which has an antenna radiation area, a first ground area and a second ground area. The antenna radiation area has a first antenna radiation area and a second antenna radiation area. The first antenna radiation area is disposed and adjacent to the second antenna radiation area along a first direction, the first antenna radiation area has a first length along a second direction, the second antenna radiation area has a second length along the second direction, and the second length is less than the first length. The first ground area is disposed along the second direction and corresponded to the first antenna radiation area, and a first distance along the second direction is between the first ground area and the first antenna radiation area. The second ground area is disposed along the second direction and corresponded to the second antenna radiation area, and a second distance along the second direction is between the second ground area and the second antenna radiation area. The other embodiment of the present invention is the vehicle antenna device, which has the antenna module, a high speed connector and an antenna protection box. The antenna protection box is wrapped around the antenna module and exposes the high speed connector. The present invention provides the vehicle antenna device and the antenna module thereof, which use the first antenna radiation area and the second antenna radiation area to generate resonant frequencies applied to existing Bluetooth and Wi-Fi systems, and generate an ultra-high frequency resonant frequency in a ground-feed coupling manner as well for applying to the existing Bluetooth and Wi-Fi systems, so as to support the ultra-wideband spectrum range and improve the overall transmission efficiency. The accompanying drawings are incorporated in and constitute a part of this application and, together with the description, serve to explain the principles of the invention in general terms. Like numerals refer to like parts throughout the disclosure. It should be understood, however, that this summary may not contain all aspects and embodiments of the present disclosure, that this summary is not meant to be limiting or restrictive in any manner, and that the disclosure as disclosed herein will be understood by one of ordinary skill in the art to encompass obvious improvements and modifications thereto. BRIEF DESCRIPTION OF THE DRAWINGS The features of the exemplary embodiments believed to be novel and the elements and/or the steps characteristic of the exemplary embodiments are set forth with particularity in the appended claims. The Figures are for illustration purposes only and are not drawn to scale. The exemplary embodiments, both as to organization and method of operation, may best be understood by reference to the detailed description which follows taken in conjunction with the accompanying drawings in which: FIG. 1 illustrates a schematic 3-D view of an embodiment of the vehicle antenna device of the present invention; FIG. 2 illustrates a schematic exploded view of the embodiment of the vehicle antenna device of the present invention; FIG. 3 illustrates a schematic 3-D view of an embodiment of the an