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# Analog electronic circuit Technical notes

Report on contents other than SMPS design.

We provide information as experts in analog high frequency circuit design.

## LCR meter

Understand the operating principle of an LCR meter by measuring and calculating inductance.

Understand the operating principle of an LCR meter by measuring and calculating capacitance.

LCR meters cannot determine whether the measured object is series equivalent or parallel equivalent

We will explain how to calculate LsLpCsCpRsRp using an oscilloscope.

## Vector network analyzer (VNWA3E) DG8SAQ

Measure and extract S21 frequency characteristic data of Line-Filter.

Import the extracted data into EXCEL.

Explanation of how to calculate dB and impedance from extracted VNWA s1p data.

Create a frequency-dB graph of Line-Filter using EXCEL.

Create a frequency-impedance graph of Line-Filter using EXCEL.

### How to use Create-dB&Zgraph-from-VNWAs1p calculation sheet.

Explaining how to create dB and impedance graphs from VNWA s1p data.

### Import the VNWA data of the frequency characteristics of the coil into EXCEL.

Measure and extract VNWA data of the S11 frequency characteristics of the coil.

Import the extracted data into EXCEL.