Chapter 12 / 12.16 / 12.16.2

12.16.2 Why Are Some Antennas Much Larger Than Others?

Explains the relationship between wavelength and physical antenna size, why LF antennas are enormous while millimeter-wave antennas can fit inside smartphones, and discusses electrically short antennas.

1. Why Does Wavelength Determine Antenna Size?
2. How Are Frequency and Wavelength Related?
3. Why Are AM Broadcast Antennas So Tall?
4. Why Are Mobile Phone Antennas So Small?
5. Can an Antenna Be Made Smaller Than Its Wavelength?
6. Why Are Satellite Dishes So Large?
7. Why Do Radar Systems Often Use Flat Panels?
8. Why Can't Engineers Ignore Antenna Size?
9. Have New Materials Changed This Relationship?
10. Why Do Some Antennas Seem Smaller Than They Really Are?
11. Why Is Understanding Antenna Size Important?
12. What Should You Remember?

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