Chapter 9 / 9.6 / 9.6.1

9.6.1 What Does A Radio Transmitter Actually Do?

Discover how transmitters convert information into radio waves. Learn about frequency translation, modulation, amplification, spectral purity, and why transmitters are fundamental to every wireless communication system.

1. What Is a Radio Transmitter?
2. Why Is a Carrier Needed?
3. What Are the Main Functions of a Transmitter?
4. What Is Frequency Translation?
5. What Is Modulation?
6. Why Must the Signal Be Amplified?
7. Why Can't Transmitters Simply Increase Power Indefinitely?
8. Why Is Frequency Stability So Important?
9. How Are Stable Frequencies Generated?
10. Why Must Unwanted Signals Be Suppressed?
11. What Is Spectral Purity?
12. Why Is Linearity Important?
13. What Is Digital Predistortion?
14. How Have Software-Defined Radios Changed Transmitters?
15. What Happens Immediately Before Transmission?
16. Where Are Radio Transmitters Used?
17. How Have Transmitters Changed Since the Early Days of Radio?
18. Why Is the Transmitter Only Half of the Communication System?

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