Measuring impedance of the rectifier

2016-09-20

I built a rectifier circuit for WPT project.  This rectifier is used at receiver to convert AC from the coil to DC. Here are the pictures and the circuit diagram. Please look at the R1 in left side. The R1 is need to match the impedance of the system. The value should be 50 Ohm, But I use 47 Ohm instead here because of the simplicity of the circuit.  The…

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Measuring Attenuator with VNWA

2016-09-20

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…

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