How can I measure impedance of electrical component at high frequency (13.56 MHz)?

Discussion in 'General Electronics Chat' started by Dong-gyu Jang, Jul 6, 2016.

  1. Dong-gyu Jang

    Thread Starter Member

    Jun 26, 2015
    100
    4
    Hello.

    I'm trying to measure resistance, inductance and capacitance of our electrical components at 13.56 MHz.

    I was told that the network analyzer can do this job. However, It seems there are instruments of another types which also measure these parameters.

    As I'm not familar wit this, I would like to ask what kind of things are typically used to measure resistance, inductance and capacitance of electrical components at high frequency. Practically, I would like to get cheeper solution as budget is limited.

    It is also good for me to know a list of instruments capable to do this measuement.

    Thanks to read!
     
  2. The Electrician

    AAC Fanatic!

    Oct 9, 2007
    2,281
    326
    Dong-gyu Jang likes this.
  3. dannyf

    Well-Known Member

    Sep 13, 2015
    1,779
    360
    Measuring impedance vs. It's components can be two different things.

    One way to measure resistance is to use a log amplifier - analog has a few such chips. Basically drive the dut through a sampling resistor and measure the voltage drop over that resistor.

    Measuring it's components is tough, at this frequency.
     
  4. crutschow

    Expert

    Mar 14, 2008
    12,995
    3,229
    If you can't afford to buy a network or impedance analyzer, you may be able to rent one, if this is a one-time measurement.
    Otherwise I think you will have to bite-the-bullet and buy one.
     
    Dong-gyu Jang likes this.
  5. Dong-gyu Jang

    Thread Starter Member

    Jun 26, 2015
    100
    4
    All right. It looks network analyzer and impedance analyzer are only practical option..

    Could you tell me which one is better for high frequency measurement? All they are same?
     
  6. crutschow

    Expert

    Mar 14, 2008
    12,995
    3,229
    Just look for one that measures the parameters to the desired value at the desired frequency.
    You generally pay more for higher accuracy and higher frequency, so didn't get more than you need.
     
    Dong-gyu Jang likes this.
Loading...