Chapter 12 / 12.16 / 12.16.4

12.16.4 Why Do High-Gain Antennas Have Narrow Beams?

Explains the conservation of radiated energy, gain versus beamwidth, directivity, aperture size, sidelobes, and why satellite antennas require accurate pointing.

1. What Is Antenna Gain?
2. Does a High-Gain Antenna Produce More Power?
3. Why Does Concentrating Energy Produce a Narrow Beam?
4. What Is Beamwidth?
5. Why Are Large Antennas Usually More Directional?
6. Why Is a Narrow Beam Useful?
7. Why Isn't Every Antenna Highly Directional?
8. What Are Side Lobes?
9. Why Must Satellite Dishes Be Pointed So Accurately?
10. How Do Phased Arrays Steer Narrow Beams?
11. Is There a Limit to Antenna Gain?
12. Why Is Understanding Gain and Beamwidth Important?
13. What Should You Remember?

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