Motor train unit BTM vehicle-mounted antenna in-band interference test system and method

• Main Authors: YANG XIANGZHUO, LI REN, WANG LIN, LIU XUEMING, TENG WANXIU, LU XIQUAN, ZHAO TA, FU CAIXIN
• Format: Patent
• Language: Chinese; English
• Published: 02.12.2022
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION

The invention discloses an in-band interference test system and method for a BTM vehicle-mounted antenna of a motor train unit. The in-band interference test system comprises a BTM receiving antenna, 4.23 MHz, a transformer, a balun, a low-pass filter, a band-pass filter, a logarithmic amplifier, a data acquisition module and a portable computer. According to the invention, BTM uplink signals are received through a BTM receiving antenna, signal processing is carried out, interested in-band frequency band signals are stored, and the signals are collected to a portable computer to complete data analysis and storage. By processing and analyzing the in-band signal, the electromagnetic interference near the 4.23 MHz frequency band in the uplink of the transponder can be effectively analyzed, and necessary data support is provided for electromagnetic interference analysis and electromagnetic protection of BTM equipment. 本发明公开了一种动车组BTM车载天线带内干扰测试系统及方法，包括：BTM接收天线、4.23MHz、变压器、平衡-不平衡转换器、低通滤波器、带通滤波器、对数放大器、数据采集模块以及便携式计算机。