I am using the vector network analyzer for my WPT project. It is called VNWA 3E (Link) and shows great performance.
Last time, I purchased some atteunators at ebay.com. I thought that these attuenators can be used to measure the gain of the RF amplifier.
There are 4 types of atteuantors. -3dB, -6dB, -20dB and -30 dB.
This is the setup. It is very easy to setup the attuenator. First I calibrated my VNWA at frequency range from 0.1 to 20 MHz. Then I put the atteuantor on the coxial cable.
Then, I measured the S21 parameter with VNWA. Here are the results.
Well, All Attenators showed the measured values matched well with its own values. I am so satisfied with this perchance.
Thank you for reading this article.
1. Atteuantor : -03dB
2.Atteuantor : -06dB
3.Atteuantor : -20dB
4.Atteuantor : -30dB