Upcoming SlideShare
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×
Saving this for later? Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime – even offline.
Standard text messaging rates apply

# Angle modulation

434

Published on

0 Likes
Statistics
Notes
• Full Name
Comment goes here.

Are you sure you want to Yes No
• Be the first to comment

• Be the first to like this

Views
Total Views
434
On Slideshare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
19
0
Likes
0
Embeds 0
No embeds

No notes for slide

### Transcript

• 1. Friday, November 30, 2012Angle (Exponential)Modulation 1
• 2. Friday, November 30, 2012Determine the instantaneous frequency of the signal The frequency of ф(t) is 5 Hz at t = 0 and increases linearly at a rate of 1 Hz per 2 second.
• 3. Friday, November 30, 2012Hence, in PM, the instantaneous frequency ωi varieslinearly with the derivative of the modulating signal 3
• 4. Friday, November 30, 20124
• 5. Friday, November 30, 20125
• 6. Friday, November 30, 20126
• 7. Friday, November 30, 20127
• 8. Friday, November 30, 20128
• 9. Friday, November 30, 20129
• 10. H. W. Friday, November 30, 2012 10
• 11. Friday, November 30, 201211
• 12. Friday, November 30, 2012If kf is very small (that is, if |kfa(t)| << 1), then all but the first two termsare negligible 12
• 13. Friday, November 30, 201213
• 14. Friday, November 30, 201214
• 15. The Maximum and Minimum carrier frequencies are ωc + kf mp and ωc - kf mp Friday, November 30, 2012The deviation of carrier frequency is ± kf mp. 15
• 16. Friday, November 30, 201216
• 17. Friday, November 30, 201217
• 18. Friday, November 30, 201218
• 19. Friday, November 30, 201219
• 20. Friday, November 30, 201220
• 21. Friday, November 30, 201221
• 22. bandwidth is unchanged so that B = 15 KHz Friday, November 30, 2012 22
• 23. Friday, November 30, 201223
• 24. Friday, November 30, 201224
• 25. Friday, November 30, 201225
• 26. Friday, November 30, 201226
• 27. Friday, November 30, 201227