



Part 1: Basic principles.
Zplane operations. Series reactance and resistance. Parallel
impedance. Admittance, conductance, and susceptance. The equation
of a circle. Parallel Resistance (constant susceptance). Parallel
reactance (constant conductance). Transformers ('constant' phase).
Impedance matching strategies. Zplane regions. Part 2: Popular matching networks. The Pinetwork. Fully variable Pimatch. Lmatch. Switched inductor Pimatch. Tapped inductor with interpolation capacitor. Tmatch. Reciprocal Lnetwork. Switched inductor Tmatch. DifferentialT match. "Ultimate" Transmatch? SPC Transmatch. Part 3: Lnetwork solutions. Overview. Idealised network solutions. Component range calculations. Lossy networks. Efficiency. Part 4: Practicalities of matching network design. Materials and components. Variable inductors. General considerations. References. Appendix: MFJ989C Versatuner modifications . The SGC 230 Automatic ATU. Collins 180Lseries atomatic antenna tuners. 

Antenna
impedance calculator and Lnetwork matching solution finder
by Alexandr Fediaev (Windows program, .zip file  18.6 MiB) Converts results obtained using W2AEW Alan Wolke's bridge + oscilloscope method to impedance, displays this as a point on the Zplane and calculates the shortest path Lnetwork solution for a match to 50 Ω. You can contact Alexandr via his YouTube account. 


