BS EN 60154-4:2017

What is BS EN 60154-4 – Circular waveguide flanges about?  

BS EN 60154-4 is the fourth part of the BS EN 60154 multi-series that discusses flanges for waveguides. This European standard helps its users achieve maximum connectivity between waveguides by ensuring the quality of the waveguide flanges. 

BS EN 60154-4 specifies the dimensions of flanges for circular waveguides for use in electronic equipment. BS EN 60154-4 covers requirements for flanges drilled before or after mounting on waveguides. 

Who is BS EN 60154-4 – Circular waveguide flanges for? 

BS EN 60154-4 on relevant specifications for flanges for circular waveguides is useful for: 

• Manufacturers of hollow metallic waveguides 
• Manufacturers of microwave system devices (like attenuators, phase shifters) 
• Organizations that use radar systems 
• Electrical engineers 

Why should you use BS EN 60154-4 – Circular waveguide flanges?  

Waveguide flanges act as connectors between two waveguides or waveguides and equipment that use waveguide interfaces. These flanges need to be well designed or they could affect the functionality of the waveguides due to improper connection. 

BS EN 60154-4 specifies mechanical requirements of waveguide flanges that are necessary to ensure compatibility and interchangeability as well as to ensure adequate electrical performance. 

Overall, BS EN 60154-4 helps you to maintain the operability of waveguide interfaces by ensuring the quality of circular waveguide flanges. 

What’s changed since the last update?  

BS EN 60154-4:2017 replaces BS EN 60154-4:1969.  BS EN 60154-4:2017 includes the following significant technical changes with respect to BS EN 60154-4:1969: 

• Revise the estimation for return loss at connection interface of waveguides 
• Add two types 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