Multichannel phase measuring system and method based on radio frequency transceiver chip

Abstract

The invention discloses a multichannel phase measuring system and method based on a radio frequency transceiver chip. The system is realized by adopting the radio frequency transceiver chip and an FPGA mainly. The radio frequency transceiver chip is utilized for receiving analog radio frequency signals of eight channels, processing procedures such as analog mixing, zero intermediate frequency sampling, digital decimation filtering and digital signal correction are completed, a single radio frequency transceiver chip can complete RF signal processing to two channels, and digital-analog integrated design is completely realized. The FPGA mainly completes implementation of a phase measuring algorithm and control and parameter loading operations of the radio frequency transceiver chip. The system also adopts a JESD204B high-speed serial interface for realizing a data interaction and synchronizing function between the FPGA and the radio frequency transceiver chip, is simple in design and lowin cost and can realize a 0-6G wideband phase measuring function of multiple channels, phase measuring accuracy reaches less than 0.1 degree, and the system and the method which are disclosed by theinvention can be widely applied to the fields of radars, communication, industrial control and the like.

Description

technical field [0001] The invention relates to the field of digital signal processing, in particular to a multi-channel phase measurement system and method based on a radio frequency transceiver chip. Background technique [0002] In many fields such as industrial automation, radar guidance and communication electronics, phase measurement technology has a wide range of applications. The essence of phase measurement is to detect the phase difference between two signals with the same frequency. How to quickly and accurately measure the phase difference between two signals has always been a hot research topic in the field of measurement. In the engineering application of multi-channel phase measurement system, how to achieve Completing the phase measurement work under power consumption and better cost is also a key topic of research at home and abroad. [0003] In the past, the digital circuit and the radio frequency circuit were designed separately in the radio frequency tr...

AI Technical Summary

Problems solved by technology

[0003] In the past, the digital circuit and the radio frequency circuit were designed separately in the radio frequency transceiver chip, or strict isolation measures were taken on the PCB board, which can effectively reduce the influence of the digital circuit on the radio frequency performance. Such a hardware system must use more More analog devices and larger PCB layout and wiring space increase the cost and volume of the system

[0004] The traditional analog phase measurement system often has the problems of unstable phase measurement, low phase measurement accuracy, and narrow phase measurement frequency bandwidth.

Due to the separate design of digital and analog circuits, the system has high power consumption, large volume, and high hardware system cost

Images