ECE125

5. Using a varactor to generate FM is an example of a ____________________ modulator.
6. A Colpitts oscillator uses a ____________________ voltage divider to provide feedback.
8. When two or more signals share a common channel, it is called:
10. The method of generating FM used by broadcasting station is
15. A ____________________ circuit is used to remove RF from the DC voltage bus.
17. Occurs when the microwave beam is at point of grazing over an obstacle
18. The point on the satellite orbit, closest to the earth is
19. A ____________________ capacitor is used to short unwanted RF to ground.
20. So called "1/f" noise is also called:
21. Mathematically, a spectrum is represented by a ____________________ series.

1. Matching networks also act as filters to help reduce ____________________ levels.
2. The 'B' in Hartley's Law stands for
3. An ____________________ detector uses a diode to half-wave rectify an AM signal.
4. A radio signal's ____________________ is the distance it travels in one cycle of the carrier.
7. A ____________________ refers to any kind of FM or PM detector.
9. The theory of radio waves was originated by
11. The bandwidth of an FM signal can be approximated using ____________________ rule.
12. The process of assigning PCM codes to absolute magnitudes
13. The superheterodyne receiver was invented by:
14. Is the ability of a receiver to separate two signals that are close to each other in frequency.
15. A demodulator is also called a ____________________.
16. To isolate the oscillator from load changes, a ____________________ stage is used.