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Can a ribbon cable carry GHz signals?

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funster

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ribbon cable problem

hello, every friends:

my question is:

can a ribbon cable carry Ghz signals?

The reason?


best regards
 

Moss

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Re: ribbon cable problem

I think it can't. In some cases, short distances, single signal( i.e. one pair of wires) no too high frequency may be it works. But my answer is Not. Current practical designs proove this, as far as I know.
 

rfmw

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Re: ribbon cable problem

Although I have no experience in ribbon cables, why can't one make a coplanar transmission line on ribbon cable?
 

flatulent

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Re: ribbon cable problem

Ribbon cable is designed to be flexible. The plastic material has high microwave losses. The other problem is the connectors. They have large impedance bumps which will cause reflection losses and dispersion-like problems.

There is also the EMI radiation problem and coupling between wires problems.
 

sysco_stevens

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Re: ribbon cable problem

we usually don't use ribbon cable to carry GHz signal,
if you want to carry ghz signal, you can use high
quality coaxial cable to do it.
ribbon cable usually can be used for IDE interface
cable, because the speed is few tens Mhz.
if you use ribbon cable in Ghz area, the loss
will be greater.

best regards





funster said:
hello, every friends:

my question is:

can a ribbon cable carry Ghz signals?

The reason?


best regards
 

    funster

    points: 2
    Helpful Answer Positive Rating

xxargs

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Re: ribbon cable problem

sysco_stevens said:
we usually don't use ribbon cable to carry GHz signal,
if you want to carry ghz signal, you can use high
quality coaxial cable to do it.
ribbon cable usually can be used for IDE interface
cable, because the speed is few tens Mhz.
if you use ribbon cable in Ghz area, the loss
will be greater.



funster said:
hello, every friends:

my question is:

can a ribbon cable carry Ghz signals?



in very short distanse and depend of senders power out and listeners sensitivity
and impedance matching

reason is high loss depend of skin-effect on small conduct and dielecric loss on insulation between conduct, and bendings give geometry change and make reflection back to sender - and radiating signal power to air and easy coupling
part of signal power to nearest other cables in enviroment etc.

Coax have wider area of copper surface, using low loss insulation or only air in big cables and gemoetry holds more stabile on bending and good screening from outher noise and signal power inside cannot dissapear on radiation like antenna

coax is better in most cases.
 

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