[MOVED]Waveguide dummy load

[marjankashani]

Hi,guys,I`m designing a rotman lens with waveguguides as ports. how can I design a dummy load to put at the end of the waveguides?what kind of dummy load?

 

[davenn]

a common way to make a WG dummy load is to insert a wedge shaped chunk of conductive foam

Dave

 

[jiripolivka]

a common way to make a WG dummy load is to insert a wedge shaped chunk of conductive foam

Dave

For a power less than 1 Watt, use a wedge made of epoxy filled with powdered iron. Wedge length should be one wavelength long approx.
If you can find a Mylar foil deposited with a resistive layer of 300-400 Ohms/square located in E-plane and tapered makes for a good load but limited to 0.1 W approx.

 

[marjankashani]

in practice yes,but how about in CST?coz I`ve tried all sort of absorber materials and nothing!