A vehicle-mounted two-way transceiver based on millimeter-wave active phased array

Abstract

The present invention provides a vehicle-mounted two-way transceiver based on a millimeter-wave active phased array, including a first active transceiver array, a second active transceiver array, a GNSS receiving antenna, a frequency source module, a power supply module, and a digital intermediate frequency board , wherein, the first active transceiver array and the second active transceiver array both include a millimeter wave phased array antenna array. The invention adopts the millimeter-wave phased array antenna array to replace the traditional fixed beam antenna, and can realize the reconstruction of beam pointing and beam performance through flexible beam switching, and realize the beam tracking of vehicle-mounted terminals and ground base stations in straight roads and curved roads of rail transit. Improve the reliability and security of communication links.

Description

technical field [0001] The invention relates to the technical field of millimeter waves, in particular to a vehicle-mounted two-way transceiver based on a millimeter wave active phased array. Background technique [0002] Extremely High Frequency ("EHF") is the International Telecommunication Union ("ITU") designation for a radio frequency band in the electromagnetic spectrum from about 28 to 300 gigahertz ("GHz"). Radio waves in this frequency band have wavelengths from 10 millimeters to 1 millimeter and are thus called millimeter waves (“mmWave” or “mmWaves”). [0003] In recent years, rail transportation represented by subways, high-speed railways, and maglev trains has developed rapidly around the world, greatly improving people's travel efficiency and improving the level of social and economic development. In the rail transit system, wireless communication is generally used between the train and the ground to realize the two-way data interconnection between the vehicle...

AI Technical Summary

Problems solved by technology

[0004] However, as the speed of trains continues to increase, from the current mature technology of 350km / h high-speed rail wheel-rail traffic to the 600km / h magnetic levitation system, and even the vacuum pipeline traffic of the order of 1,000 km / h, the continuous increase in speed has caused The time delay, reliability, bit error rate and other indicators of wireless communication links for transmission of traction and control information are becoming more and more stringent

Traditional communication systems such as GSM-R and LTE-M can no longer meet the signal transmission requirements of rail transit such as maglev and vacuum pipelines. There is an urgent need to achieve lower delay and higher reliability based on high-performance wireless transceiver equipment and customized networks. and security

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