IEC 60154-4:20 17规定了电子设备中使用的圆形波导法兰的尺寸。 它涵盖了安装在波导上之前或之后钻孔的法兰的要求。 本文件的目的是为波导法兰规定必要的机械要求，以确保兼容性和尽可能的互换性，并确保足够的电气性能。 与上一版相比，此版本包括以下重大技术变更: -修正波导的连接界面处的回波损耗的估计； -添加两种类型的波导法兰用于高频应用，即超过50GHz； -将工作频率范围扩展至3.3 THz； -重命名R1200以上的频带，即R1.2K。

IEC 60154-4:2017 specifies the dimensions of flanges for circular waveguides for use in electronic equipment.
It covers requirements for flanges drilled before or after mounting on waveguides.
The aim of this document is to specify for waveguide flanges the mechanical requirements necessary to ensure compatibility and, as far as practicable, interchangeability as well as to ensure adequate electrical performance.
This edition includes the following significant technical changes with respect to the previous edition:
- revise the estimation for return loss at connection interface of waveguides;
- add two type of waveguide flange for high frequency application, i.e. over 50 GHz;
- expand the operation frequency range up to 3,3 THz;
- rename the frequency band over R1200, i.e. R1.2K.