| Home |
| Search |
| Today's Posts |
|
|
|
#1
July 18th 07, 10:31 PM
posted to sci.electronics.basics,rec.radio.shortwave,rec.radio.amateur.antenna,alt.cellular.cingular,alt.internet.wireless
|
|||
|
|||
AM electromagnetic waves: 20 KHz modulation frequency on an astronomically-low carrier frequency
How do you determine amplitude? What's the math (or physics) to derive amplitude? The fundamental formular Acos(B) + C is all you need to describe angular modulation. Changing the value of A over time determines the amplitude of an AM modulated carrier. Changing the value of B over time determines the amplitude of an FM modulated carrier. The rate of change of A or B changes the modulation frequency respectively. C is DC, Y axis offset and has not been discussed here. r, Bob F. |
| Reply |
| Thread Tools | Search this Thread |
| Display Modes | |
|
|
Hybrid Mode
