Never thought of this radiated->conducted->radiated coupling before very interesting. It would have been nice to see in the demo how distance between power unit and cable changes the emission and have it measured with antenna. Would you consider doing a demo 3?
Length of cable =lamda/4 or lamda/2. And lamda=C/F. Your 100Mhz does not match the calculation either quarter or half wavelength. Can you please tell me if I am overlooking?
Hi there, many thanks for the question. The speed of light in free space is 3*10^8 m/s. But if you use cable (because cable has dielectric), we often have some "scaling factor", in this case, i think i chose 0.7 for the scaling, meaning my speed of light is about 2*10^8 m/s.
We saw the shield reduced the coupling with cable and thereby the emission. If cables are unavoidable, what could be the mitigation methods?
Never thought of this radiated->conducted->radiated coupling before very interesting. It would have been nice to see in the demo how distance between power unit and cable changes the emission and have it measured with antenna. Would you consider doing a demo 3?
That's a great suggestion. I will try to think of something creative about this topic. Thanks
Can you please tell me how do you know half wavelength vs quarter wavelength?
Length of cable =lamda/4 or lamda/2. And lamda=C/F. Your 100Mhz does not match the calculation either quarter or half wavelength. Can you please tell me if I am overlooking?
Hi there, many thanks for the question. The speed of light in free space is 3*10^8 m/s. But if you use cable (because cable has dielectric), we often have some "scaling factor", in this case, i think i chose 0.7 for the scaling, meaning my speed of light is about 2*10^8 m/s.
@Mach One Design EMC Also one more question. Please advise. how to know whether the cable is quarter wavelength or half wavelength?
Add a ferrite core around the cable - what happens?