Vehicle-mounted millimeter wave ultra-wideband tight coupling antenna array applied to V2X

Abstract

The invention discloses a vehicle-mounted millimeter wave ultra-wideband tight coupling antenna array applied to V2X (vehicle-to-evening). The array is composed of a plurality of antenna arrays, each antenna array is composed of eight array units arranged according to a period, each array unit comprises a dielectric substrate, a feed structure printed on the front surface of the dielectric substrate, a dipole antenna unit printed on the rear surface of the dielectric substrate, a second dielectric substrate tightly attached to the rear of the dielectric substrate, and an acrylic plate tightly attached to the rear of the second dielectric substrate. The feed balun is arranged on the ground of the Marchand balun, and a hole digging microstrip line is added, so that the impedance matching capability of the balun is enhanced. The vehicle-mounted antenna array is manufactured by PCB printing, is simple in structure, and does not need later assembly, the acrylic plate is used as the back plate to enhance the stability of the structure so as to cope with a bumpy vehicle-mounted environment, and the antenna array can work in a millimeter wave frequency band, has the advantages of saving space and being low in cost, and has a good application prospect in the field of future vehicle networking.

Description

Technical field: [0001] The present invention relates to a vehicle antenna design, and more particularly to a car millimeters array applicable to V2X, which belongs to the field of mobile communication technology. Background technique: [0002] In recent years, with the continuous development of automatic driving technology, there are more and more practical applications of the car network. As part of the automotive communication system, antenna as a terminal component of transmitting and reception, often affects the performance of the entire system. [0003] With the development of 5G technology and the construction of the overall supporting facilities, 5G millimeter waves are combined with the car network, which is the trend of future research. However, the frequency band of the signal that needs to receive and transmitted is diverse, including communication between the communication, the vehicle and the global positioning system, the vehicle and the driver mobile phone, and th...

AI Technical Summary

Problems solved by technology

However, the frequency bands of the signals that the vehicle system needs to receive and transmit are diverse, including but not limited to the communication between the vehicle and the base station, the communication between the car and the global positioning system, the communication between the vehicle and the driver's mobile phone, and between the car and the car. Connection, etc., the traditional method is to equip vehicles with multiple antennas according to different frequency bands, which increases the number of devices and will cause certain interference with each other

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