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IWR1443: mmWave submerged in Hydraulic Oil

Bob Bacon
Genius 10815 points
Part Number: IWR1443

Hello
Bit of a slightly bizarre question, which I suspect will not work but would like to double check with you.

Can we use the mmWave products when the antenna is submerged in hydraulic oil? If we could match the antenna impedance to radiate into the oil with low SWR, would the oil absorption characteristics at 80GHz make this a non-starter?

Thanks
Bob Bacon

  • 0
    TI__Mastermind 18500 points

    Hi Bob, 

    We have never tried this or researched this type of application. At this point, I can really only suggest follow-up questions to help narrow down the required research to get to an answer: 

    1. What is the overall intended application here? Can you give some more specifics?
    2. Is the intention to have a metallic antenna in direct contact with the hydraulic oil? Could a radome structure be interposed between the antenna and the fluid?
    3. What is the exact chemical composition of the hydraulic fluid in question? Many oils have been studied for their dielectric properties and many are used in industry specifically for this purpose (high-voltage/current capacitor dielectrics for example). 
    4. You will need to characterize (or find someone else who has already) the dielectric properties of the fluid in the 76-81GHz band 
    5. Once the properties are understood, you can apply EM theory to determine the physical dimensions of a proper hydraulic fluid radiating antenna 
    6. Will the antenna ever need to propagate in vacuum or air as well as hydraulic fluid? That might be another problem issue.

    Please let me know if that helps.

    Thank you, 

    Randy

  • 0 in reply to Randy Rosales
    TI__Mastermind 18500 points
    Hi Bob,

    Please let me know if that answers your questions for now or gets you on the right track.

    Thank you,
    Randy
  • 0 in reply to Randy Rosales
    TI__Mastermind 18500 points

    Hi Bob,

    Since we have not seen activity on this thread in over a week we are considering this post closed. Please open up another post if you have further questions. 

    Thank you,
    Randy