Thank you to Apostolos for sharing with us his educational video that introduces "scattering parameters" (aka S-Parameters), and how these parameters relate to antennas and RF networks. S-Parameters are a matrix of values that can be used to describe an electrical network. Apostolos' video explains these parameters in detail, giving good visual examples. Apostolos writes:

Here are the topics I cover:

• What is a 'Network'?
• Power Waves
• Complex Impedance & Phase Angle
• S-Matrix & S-Parameters
• Reflection & Transmission Coefficients
• Standing Waves
• Example Networks
• Designating S-Parameters
• Reciprocity & Losslessness
• Reflection Coefficient and VSWR