Stub Impedance Matching

#231 In this video I look at an impedance matching technique commonly used at very high frequencies, usually above a 1GHz, which implies the use of transmission line stubs to provide both reactance and impedance transformation possibilities. One of the special things with this technique is that it compensates for complex impedances and it can be built from pieces of transmission line of the same impedance as the real impedance to which you are trying to connect to.

Impedance matching series:
Resistive matching:    • Electronics tutorial - Resistive (los...  
Lossless matching part 1:    • Lossless Impedance Matching - Part1/2  
Lossless matching part 2:    • Lossless Impedance Matching - Part2/2  
Transformer matching part1:    • Wideband coupling - Transformer Imped...  
Transformer matching part2:    • Resonant coupling - Transformer Imped...  
Transformer matching part3:    • Coupling experiments - Transformer Im...  
Quarter wavelength matching part1:    • Quarter wavelength impedance matching...  
Quarter wavelength matching part2:    • Quarter wavelength impedance matching...  
Stub matching:    • Stub Impedance Matching  

Stub matching worksheet: https://docs.google.com/spreadsheets/...

References:
https://archive.org/details/Microwave...
Microwave Engineering, 4ed, 2012, M.D. Pozar; Ch5.3
Radio Systems Engineering, 2016, S. W. Ellingson; Ch9.7

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