Stats

  • Locked Locked
  • Replies 3
  • Subscribers 63
  • Views 13542
  • Members are here 0
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

RF electrode active water cooling

Vereth

Hi,

I'm helping colleagues to design a RF (13.56MHz, a few kW) electrode and we argue about the water cooling.

In the current design, normal tap water is in direct contact with the electrode, flow in a plastic tube and then in a metallic tube. We dissagree on if we should consider water as a conductor (with resistance of 20-200 Ohm/m) or if it should be considered as a loosy dielectric.

 My consern if it is to be considered as a conductor is that if the plastic tube is too short, the impedance of the water line to ground will partly short the electrode to ground of strongly modify its impedance.

 Some colleague are saying that a minimum of 1.2m is necessary but they can't really tell me where they hear this. Any reliable source of information would be helpful to settel this debate.

 Thanks,

Vereth 

 

Parents

  •  Hi Vereth,

    This is probably not be the best forum to get this question answered.  This forum is for questions regarding using the Virtuoso Spectre/SpectreRF and related tools.

     It's also difficult to visualize what you are doing without a diagram of sorts.

    best regards,

    Tawna

     

    Vereth said:

    Hi,

    I'm helping colleagues to design a RF (13.56MHz, a few kW) electrode and we argue about the water cooling.

    In the current design, normal tap water is in direct contact with the electrode, flow in a plastic tube and then in a metallic tube. We dissagree on if we should consider water as a conductor (with resistance of 20-200 Ohm/m) or if it should be considered as a loosy dielectric.

     My consern if it is to be considered as a conductor is that if the plastic tube is too short, the impedance of the water line to ground will partly short the electrode to ground of strongly modify its impedance.

     Some colleague are saying that a minimum of 1.2m is necessary but they can't really tell me where they hear this. Any reliable source of information would be helpful to settel this debate.

     Thanks,

    Vereth 

     

     

Reply

  •  Hi Vereth,

    This is probably not be the best forum to get this question answered.  This forum is for questions regarding using the Virtuoso Spectre/SpectreRF and related tools.

     It's also difficult to visualize what you are doing without a diagram of sorts.

    best regards,

    Tawna

     

    Vereth said:

    Hi,

    I'm helping colleagues to design a RF (13.56MHz, a few kW) electrode and we argue about the water cooling.

    In the current design, normal tap water is in direct contact with the electrode, flow in a plastic tube and then in a metallic tube. We dissagree on if we should consider water as a conductor (with resistance of 20-200 Ohm/m) or if it should be considered as a loosy dielectric.

     My consern if it is to be considered as a conductor is that if the plastic tube is too short, the impedance of the water line to ground will partly short the electrode to ground of strongly modify its impedance.

     Some colleague are saying that a minimum of 1.2m is necessary but they can't really tell me where they hear this. Any reliable source of information would be helpful to settel this debate.

     Thanks,

    Vereth 

     

     

Children
No Data

Community Guidelines

The Cadence Design Communities support Cadence users and technologists interacting to exchange ideas, news, technical information, and best practices to solve problems and get the most from Cadence technology. The community is open to everyone, and to provide the most value, we require participants to follow our Community Guidelines that facilitate a quality exchange of ideas and information. By accessing, contributing, using or downloading any materials from the site, you agree to be bound by the full Community Guidelines.