Hi all, first timer here.

I would like to measure impedance (|z| and phase) of a transducer, which may have lower than 0.5ohms at around 5 to 10MHz range.

For other samples with moderate impedance values, I just use a test kit or SMA connector with coax wires.

Is there a way to measure such a low impedance values accurately? I am trying to build a matching circuit to make the transducer matched to 50ohm.

I am not familiar with features including compensations etc.., so please let me know if there is a way.

Thanks,

Mike.

I would like to measure impedance (|z| and phase) of a transducer, which may have lower than 0.5ohms at around 5 to 10MHz range.

For other samples with moderate impedance values, I just use a test kit or SMA connector with coax wires.

Is there a way to measure such a low impedance values accurately? I am trying to build a matching circuit to make the transducer matched to 50ohm.

I am not familiar with features including compensations etc.., so please let me know if there is a way.

Thanks,

Mike.

Is your 4396B equipped with option 010 "Impedance Measurements" capabilities?

If so do you have the required 43961A Impedance adapter?

If yes to both then one of the compatible 'fixtures' as listed in the Agilent Accessories Selection Guide For Impedance Measurements at http://cp.literature.agilent.com/litweb/pdf/5965-4792E.pdf would be the third component of the solution.

The 4396B Data Sheet at http://cp.literature.agilent.com/litweb/pdf/5965-6311E.pdf on page 18 Figure 9 has a typical set of uncertainty curves of frequency - vs. - impedance (among other parameters). For your 0.5 Ohms at 5 MHz .. 10 MHz the curves indicate "GREATER than 10%" uncertainty. If you want to know specifics of how much greater than 10% you would need to compute your specifics with the equations provided.

The 4396B with 010 in impedance mode with a 43961B and external fixture assumes a 1-port measurement ONLY which I assume your transducer is.

Sincerely,

tsilchia.