🔍 Key Concepts

• Standing wave behavior on a half-wave antenna • Relationship between current and voltage at nodes and antinodes on a resonant conductor • How values at the feed point (center) compare to values at the physical ends

💭 Think About

• On a half-wave conductor at resonance, where along its length is the current highest, and where is it lowest? • Conversely, where is the voltage highest and lowest along the same half-wave antenna? • If the center of the antenna is one extreme for current, what must the ends be like for current, and what does that imply for voltage there?

✅ Before You Answer

• Sketch or imagine a sine wave of current along the antenna length and note the values at the ends versus the middle • Do the same for voltage and confirm it is 90° out of phase (shifted) relative to current along the antenna • Before choosing, confirm which locations correspond to nodes (zero value) and which to antinodes (maximum value) for both current and voltage