To further improve customer selection efficiency and address the confusion and adaptation difficulties of waveguide interface specifications in microwave and RF equipment applications, as well as to support standardized industry selection and device interoperability, our company has officially compiled and released a correspondence table between China's national standard BJ series waveguide ports and the international EIA WR series waveguide ports. This table clearly lists the parameter relationships of mainstream waveguide specifications, providing accurate and authoritative selection references for our customers and partners. 

In the research and development, production, import and export adaptation, and engineering applications of microwave and millimeter-wave RF equipment, the commonly used domestic GB national standard BJ series waveguides and the internationally recognized EIA WR series standards have different naming systems and specification markings. This can easily lead to selection errors, equipment mismatches, and adaptation failures of imported and exported devices. For a long time, the differences between these two standards have been a core pain point in industry selection and device interoperability. 

To practically solve real-world application problems, our company, leveraging years of experience in RF component research and production, and in conjunction with national waveguide standards and EIA international industry standards, has summarized mainstream waveguide specifications on the market and compiled an accurate one-to-one correspondence between the national standard and EIA standards. This covers commonly used frequency bands and mainstream models, suitable for applications in civil communications, industrial RF, radar detection, military support, testing instruments, and other fields. 

The following is the detailed correspondence between commonly used Chinese national standard BJ waveguides and EIA WR waveguide standards:

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