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铁路通信信号工程技术 ›› 2022, Vol. 19 ›› Issue (7): 107-111.DOI: 10.3969/j.issn.1673-4440.2022.07.021

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关于大功率滤波器的设计研究

赵君伟1,2   

  1. 1.北京全路通信信号研究设计院集团有限公司,北京 100070;
    2.北京市高速铁路运行控制系统工程技术研究中心,北京 100070
  • 收稿日期:2021-09-26 修回日期:2022-05-19 出版日期:2022-07-25 发布日期:2022-07-25
  • 作者简介:赵君伟(1970—),男,高级工程师,本科,主要研究方向:射频技术(通信),邮箱:zhaojunwei@crscd.com.cn
  • 基金资助:
    北京全路通信信号研究设计院集团有限公司科研项目(2300-K1200047.01)

Research on Design of High-power Filters

Zhao Junwei1, 2   

  1. 1. CRSC Research & Design Institute Group Co., Ltd., Beijing 100070, China;
    2. Beijing Engineering Technology Research Center of Operation Control Systems for High Speed Railways, Beijing 100070, China
  • Received:2021-09-26 Revised:2022-05-19 Online:2022-07-25 Published:2022-07-25

摘要: 大功率滤波器在车载通信系统中应用比较广泛,目前BTM发送板输出部分就有成熟的带通大功率滤波器,主要目的是抑制二次谐波和三次谐波。以欧洲环线为例,进行接收板大功率滤波器的设计研究探讨。欧洲环线车载系统需要接收来自轨旁设备的CDMA信号,同时还要保证应答器的正常工作。应答器的激活信号是27.095 MHz,发送输出功率是20 W(43 dBm),这些信号均在1根同轴电缆中传送,在射频前端使用高功率滤波器来滤除27.095 MHz信号,保证13.5 MHz的CDMA信号正常接收,需对27.095 MHz和4.5 MHz干扰信号进行抑制处理,以满足后续电路正常工作。

关键词: 大功率, 滤波, 抑制, 带通 , 仿真

Abstract: High-power filters are widely used in onboard communication systems. The current BTM transmitter board has a mature band-pass high-power filter in the output part. The main purpose is to suppress the second and third harmonics. This paper takes the Euroloop  as an example to discuss a design research on high-power filters. The Euroloop onboard system needs to receive the CDMA (Code Division Multiple Access) signals from the trackside equipment, and also needs to ensure the normal operation of the balises. The activation signal of a balise is 27.095MHz, and the transmission output power is 20W (43dBm). These signals are transmitted in the same coaxial cable. A high-power filter is required in the RF front-end to filter out 27.095MHz signals to ensure that 13.5MHz CDMA signals are received normally, and the corresponding interference signals need to be suppressed.

Key words:  , high-power, filter, suppression, band-pass, simulation

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