To capture a mammalian cell, I need to have a constant 4MHz AC signal (coming from a function generator) while sweeping the frequency from the vector network analyzer (VNA) 9kHz to 9GHz to read the scattering parameters.

Mammalian cells usually can be captured at low frequencies between 1 to 10 MHz by coplanar waveguide electrodes (CPW.) This is why I want to apply a constant 4 MHz signal to capture the cell. By sweeping a radio frequency from low to high I can read its electrical properties. I am looking for a way to apply these two signals together to capture and sweep the frequency simultaneously.

What is the best way of doing this?

Suggestions are highly appreciated.

  • \$\begingroup\$ what cell are you talking about? \$\endgroup\$
    – jsotola
    Jan 21, 2023 at 23:16
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    \$\begingroup\$ Please clarify your specific problem or provide additional details to highlight exactly what you need. As it's currently written, it's hard to tell exactly what you're asking. \$\endgroup\$
    – Community Bot
    Jan 21, 2023 at 23:21
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    \$\begingroup\$ @Ferrofluid - that just repeats the question without any additional information. What do you want to get the scattering parameters of? Where does the 4MHz need to be injected? Draw a diagram. Put all the information in the question - not in the comments. \$\endgroup\$ Jan 21, 2023 at 23:39
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    \$\begingroup\$ What do you mean by "to capture the cell" --> are you saying that animal cells somehow migrate towards your 4 MHz (not 4Mhz) source? Then, it seems you want to read its electrical properties once you have captured it? What properties are you talking about? Do you expect EEs will naturally understand what it is that you want to do? TBH I'm totally confused by this question. \$\endgroup\$
    – Andy aka
    Jan 22, 2023 at 11:57
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    \$\begingroup\$ You need to define the interface between the cells and the electrodes. Nobody on EE will have any idea about this. This is why you have received no help. Folk will if they can but they have no mental picture of what you want or why you are doing it. \$\endgroup\$
    – Andy aka
    Jan 24, 2023 at 18:01


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