Lossless Impedance Matching - Part1/2

Published at : 23 Dec 2025

#145 In this video I look at how impedance matching can be done with reactive components - inductors and capacitors. Since the matching elements are reactive, and at least in theory have no resistive part, the matching is considered lossless. I look at the basic operating principles involved and also how such matching networks can be built.

Late edit: at 2:23 8:42 and 12:45 in the formula for Lp, the term Qel is a denominator not a numerator

Impedance matching series:
Resistive matching: https://youtu.be/raw_LAJGvAE
Lossless matching part 1: https://youtu.be/-_T587mucaI
Lossless matching part 2: https://youtu.be/cXPJgnmpCrw
Transformer matching part1: https://youtu.be/cW1Qn0DQwJM
Transformer matching part2: https://youtu.be/-cG8Q1Mgrtc
Transformer matching part3: https://youtu.be/-7tXl7y7Ydo
Quarter wavelength matching part1: https://youtu.be/ie0eBuPohHs
Quarter wavelength matching part2: https://youtu.be/KLNK935wglA
Stub matching: https://youtu.be/AbQn6H4j6I0

Excel worksheet:
https://docs.google.com/spreadsheets/d/1gGu6kpxnbHW-X3xsSvVx50ldCmTOtBJo/edit?usp=sharing&ouid=109136992484742409428&rtpof=true&sd=true

Further reading:
https://slidetodoc.com/impedance-matching-loaded-q-n-n-the-q/
Radio-Frequency Electronics Circuits and Applications; Jon b. Hagen
The Art of Electronics; P. Horowitz and W. Hill; Chap H.2.4

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