At the ends of a half-wave antenna, what...

Question 1 / 27070RtfTEflK1KMQBK8mDvBu

Question 1 of 27070RtfTEflK1KMQBK8mDvBu

At the ends of a half-wave antenna, what values of current and voltage exist compared to the remainder of the antenna?

Question 1 of 27070

At the ends of a half-wave antenna, what values of current and voltage exist compared to the remainder of the antenna?

🔍 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

Question 1 of 27070

At the ends of a half-wave antenna, what values of current and voltage exist compared to the remainder of the antenna?

Equal voltage and current.

Minimum voltage and maximum current.

Maximum voltage and minimum current.

Minimum voltage and minimum current.

Question 1 / 27070RtfTEflK1KMQBK8mDvBu

Question 1 of 27070RtfTEflK1KMQBK8mDvBu

At the ends of a half-wave antenna, what values of current and voltage exist compared to the remainder of the antenna?

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Question 1 of 27070

At the ends of a half-wave antenna, what values of current and voltage exist compared to the remainder of the antenna?