Common Antenna Topologies

1. Conceptual Intuition (L1)

• Dipole: The standard reference.
• Monopole: Dipole with a mirror (Ground plane).
• Patch: Printed circuit antenna.
• Yagi: Focusing with passive elements.

2. Engineering Math (L2)

• Radiation Resistance ($73\Omega$ for dipole, $37\Omega$ for monopole).
• Bandwidth vs Size trade-off (Chu-Harrington limit).
• Gain expectations (dipole ~2dBi, patch ~6dBi).

3. System Application (L3)

• Feed network complexity.
• Ground plane size dependence.
• Higher order modes in patches.

Interactive Component: Antenna Catalogue

• Description: Interactive 3D models of common types.
• Controls: Select Type, View Currents/Fields.