CN-122000676-A - Transparent integrated vehicle-mounted antenna

Abstract

The application discloses a transparent integrated vehicle-mounted antenna which comprises a transparent substrate, an antenna structure, a double-layer FPC circuit flexible board, a feeder cable, a transparent protective film layer and an antenna structure, wherein the transparent substrate can be mounted and attached to the surface of glass, the antenna structure is arranged on the transparent substrate and comprises a transparent radiator, the transparent radiator is in a metal grid shape, the surface of the double-layer FPC circuit flexible board, which faces to the transparent substrate, is connected with the transparent radiator, the surface of the feeder cable, which faces away from the transparent substrate, is connected with the feeder cable, and the transparent protective film layer is attached to the surface of the transparent substrate and covers the antenna structure.

Inventors

• ZHANG ZHENGGUANG
• ZHANG FUQI
• XU WEI
• ZHANG LAN
• YAO WEIYI
• Gao Tuanqin

Assignees

• 天滤通电子科技(苏州)有限公司

Dates

Publication Date

20260508

Application Date

20260330

Claims (7)

1. 1. The transparent integrated vehicle-mounted antenna is characterized by comprising the following components: A transparent substrate which can be mounted and attached to the surface of the glass; The antenna structure is arranged on the transparent substrate and comprises a transparent radiator, and the transparent radiator is in a metal grid shape; the surface of the double-layer FPC circuit flexible board facing the transparent substrate is connected with the transparent radiator; A feeder cable connected to the surface of the side of the double-layer FPC circuit flexible board facing away from the transparent substrate; and the transparent protective film layer is attached to the surface of the transparent substrate and covers the antenna structure.
2. 2. The transparent integrated vehicle-mounted antenna of claim 1, wherein: The metal mesh shape of the transparent radiator is arranged in the horizontal and vertical direction, is arranged on the transparent substrate in an inkjet printing or silk screen printing or photoetching or laser induction or magnetron sputtering mode, the line width of the metal mesh is 0.01 um-50 um, the line distance is 0.02 um-1000 um, and the line thickness is 0.2 um-10 um.
3. 3. The transparent integrated vehicle-mounted antenna of claim 1, wherein: the transparent radiator comprises a first radiator and a second radiator, and a gap is arranged between the first radiator and the second radiator to form coupling matching.
4. 4. The transparent integrated vehicle-mounted antenna of claim 3, wherein: The first radiator and the second radiator are respectively provided with two bonding pads, the bonding pads of the first radiator are connected with the left side and the right side of the double-layer FPC circuit flexible board, and the bonding pads of the second radiator are connected with the middle part of the double-layer FPC circuit flexible board.
5. 5. The transparent integrated vehicle-mounted antenna of claim 4, wherein: the bonding pads of the first radiator and the second radiator respectively comprise a matte inert metal plating layer.
6. 6. The transparent integrated vehicle-mounted antenna of claim 1, wherein: The double-layer FPC circuit flexible board comprises an inner circuit layer and an outer conductor layer, the feeder cable comprises an inner core and an outer conductor, the inner core of the feeder cable is connected with the inner circuit layer of the double-layer FPC circuit flexible board, and the outer conductor of the feeder cable is connected with the outer conductor layer of the double-layer FPC circuit flexible board.
7. 7. The transparent integrated vehicle-mounted antenna of claim 1, wherein: and the transparent protective film layer covers the connection part of the double-layer FPC circuit flexible board and the transparent radiator.

Description

Transparent integrated vehicle-mounted antenna Technical Field The application relates to the technical field of vehicle-mounted communication, in particular to a transparent integrated vehicle-mounted antenna. Background With the development of intelligent networking automobiles and autopilot technology, the demand of modern vehicles for wireless communication has increased exponentially, and the number of required antennas has increased dramatically, including but not limited to cellular networks (4G/5G/6G), global Navigation Satellite Systems (GNSS), vehicle-mounted wireless local area networks (Wi-Fi), bluetooth (Bluetooth), vehicle-mounted dedicated short range communications (DSRC/C-V2X), satellite broadcasting (such as SDARS), remote Keys (RKE), tire Pressure Monitoring (TPMS), etc., and currently, vehicle-mounted antennas mainly adopt external (such as whip antennas, shark fin antennas) or afterloading glass antennas. The traditional printed glass antenna can be hidden in glass, but has single function, cannot meet the requirement of multiple frequency bands, and has poor isolation and serious mutual interference among antennas of different frequency bands when the multiple frequency bands are integrated, thereby influencing the communication quality. Meanwhile, the conductivity and the light transmittance of the existing transparent conductive material (such as indium tin oxide) are contradictory, and it is difficult to realize excellent antenna radiation performance while ensuring high light transmittance. Disclosure of Invention In order to overcome the defects, the application aims to provide the transparent integrated vehicle-mounted antenna so as to effectively solve the technical problems. In order to achieve the above purpose, the application adopts the following technical scheme: The application provides a transparent integrated vehicle-mounted antenna, which comprises the following components: A transparent substrate which can be mounted and attached to the surface of the glass; The antenna structure is arranged on the transparent substrate and comprises a transparent radiator, and the transparent radiator is in a metal grid shape; the surface of the double-layer FPC circuit flexible board facing the transparent substrate is connected with the transparent radiator; A feeder cable connected to the surface of the side of the double-layer FPC circuit flexible board facing away from the transparent substrate; and the transparent protective film layer is attached to the surface of the transparent substrate and covers the antenna structure. Further, the metal mesh shape of the transparent radiator is arranged in the horizontal and vertical direction, and is arranged on the transparent substrate in an inkjet printing or silk screen printing or photoetching or laser induction or magnetron sputtering mode, the line width of the metal mesh is 0.01um to 50um, the line distance is 0.02um to 1000um, and the line thickness is 0.2um to 10um. Further, the transparent radiator comprises a first radiator and a second radiator, and a gap is arranged between the first radiator and the second radiator to form coupling matching. Further, the first radiator and the second radiator are respectively provided with two bonding pads, the bonding pads of the first radiator are connected with the left side and the right side of the double-layer FPC circuit flexible board, and the bonding pads of the second radiator are connected with the middle part of the double-layer FPC circuit flexible board. Further, the bonding pads of the first and second radiators each include a matte inert metal plating. Further, the double-layer FPC circuit flexible board comprises an inner circuit layer and an outer conductor layer, the feeder cable comprises an inner core and an outer conductor, the inner core of the feeder cable is connected with the inner circuit layer of the double-layer FPC circuit flexible board, and the outer conductor of the feeder cable is connected with the outer conductor layer of the double-layer FPC circuit flexible board. Further, the transparent protective film layer covers the connection part of the double-layer FPC circuit flexible board and the transparent radiator. Advantageous effects According to the transparent integrated vehicle-mounted antenna, the antenna units of a plurality of communication frequency bands are highly integrated on the transparent substrate, excellent broadband or multi-band performance is achieved on the premise of ensuring high light transmittance through the design of the antenna structure in the shape of the metal grid, the antenna is integrated in the window glass or the window and outside the window, external protrusions are not needed, the original shape of the vehicle is perfectly maintained, and the antenna is invisible. Drawings The accompanying drawings are included to provide an understanding of the technical aspects of the present disclosure, and are incorporated in and