Measuring RF Filters Like a Pro: Tricks You Need to Know! Frequency response and circuit matching

Are you struggling to measure the frequency response of high-impedance RF filters? In this video, I demonstrate how to test a vintage 30-year-old electromechanical filter (ФЭМ2-045-500-2.75Н-3) designed for 500 kHz using a NanoVNA and clever impedance-matching techniques.

Learn the secrets of accurately measuring high-impedance circuits with a focus on:

* Impedance matching using parallel-to-series conversions.
* Designing and calculating RF transformers for circuit matching.
* Fine-tuning passband ripple and insertion loss to match datasheet specifications.

Whether you're into vintage electronics, RF engineering, or just curious about measuring circuits, this video is packed with tips and tricks to help you level up your skills.

🔧 Tools and Software Used:

* NanoVNA and NanoVNASaver
* Qucs for circuit modeling (behind the scene)
* KiCAD

📚 Topics Covered:

* Frequency response measurement
* Impedance matching tricks
* Transformer design calculations
* DIY soldering and prototyping

🎥 Video Chapters:
0:05 Introduction
0:50 Datasheet Analysis and Circuit Overview
2:32 Impedance Matching with Parallel-to-Series Conversion
3:47 Transformer-Based Impedance Matching Explained
6:20 Final Frequency Response Measurement

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#RFengineering #NanoVNA #CircuitDesign #DIYelectronics #FrequencyResponse