A system and test method for radio frequency testing of digital transceivers

Abstract

The invention discloses a radiofrequency testing system and method for a digital transceiver. The system comprises a master control computer, an Ethernet tester, a DC power supply, a signal source, a spectrum analyzer, a digital transceiver, a switch / attenuation controller, a loopback circuit, and a radiofrequency switching device. The digital transceiver comprises a data port, a radiofrequency port TR1, and a management port. The loopback circuit comprises a radiofrequency port TR0, a local oscillation port, and a control port CTL0. The radiofrequency switching device comprises first to fifth radiofrequency ports and a control port CTL1. The radiofrequency testing system and method achieves high testing efficiency and accuracy, substitutes the local loopback for the remote loopback of the digital transceiver, simplifies a test process, regulates the attenuation of a signal link in the loopback circuit so as to regulate the signal receiving power of the digital transceiver and satisfy a testing requirement.

Description

technical field [0001] The invention relates to the fields of wireless radio frequency and data communication, in particular to a system and a test method for radio frequency testing of digital transceivers. Background technique [0002] A digital transceiver is a device used to receive and transmit digitally modulated wireless signals by means of an antenna feeder system. It is an important part of microwave transmission or broadband wireless access equipment. [0003] The digital transceiver includes MAC (medium access control), baseband PHY (physical layer equipment), and radio frequency. Correspondingly, the test of digital transceiver is divided into data service test, baseband test and radio frequency test. The RF test of the digital transceiver is divided into loopback test, receiving channel test, transmitting channel test, return loss test, etc. [0004] For different RF test items of digital transceivers, it is necessary to build different RF test links to meet t...

AI Technical Summary

Problems solved by technology

[0004] For different RF test items of digital transceivers, it is necessary to build different RF test links to meet the test requirements. If manually built and tested, it will be time-consuming, laborious, inefficient, and due to human unnecessary errors and other reasons, the measurement The error is large, which affects the accuracy of the test results; for the loopback test and the receiving channel test, if the remote loopback is performed for the digital transceiver, the test process is complicated and the test cost is high; how to adjust and achieve the loopback test and the receiving channel The received signal power of the digital transceiver required for testing is also an important issue to consider

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