Answer the following 2 questions regarding AM, FM, or PM modulation

1) Select the statement that best describes the PM wave from the above picture. a. The PM signal clearly does not change phases with the message wave. In this case, the PM signal will not be received. b. The PM signal appears to change frequency with the message wave since both PM and FM are considered angular modulation techniques. However, the message in a PM wave is only captured in phase changes vice frequency changes. c. Since both PM and FM signals are considered angular modulation techniques, PM can be demodulated using FM demodulation techniques. d. All statements are correct.

2) The kp was changed to pi/200, What is your observation from the above picture? a. The PM signal can still be received since kp does not influence the PM index. b. kp is too high, therefore PM modulation will overlap sampling times and the message will be lost. c. kp is very small, therefore the PM index is very small, and changes in the message wave will be difficult to detect in the PM signal. This will require a highly sensitive receiver capable of detecting small phase changes. d. All statements are incorrect.

AM modulation Message 10 -10 -5 1.5 2.5 0.5 1.5 time 0.5 2.5 time x 10 x 10 combined message and PM signal combined message and FM signal 10 10 10 10 -5 -5 -10 -10 -10 0.5 1.5 time 1.5 0.5 2.5 time x 10 x 10 AM modulation Message 10 -5 -10 1.5 ime 0.5 2.5 2.5 1.5 time 0.5 x 10 x 10 combined message and PM signal combined message and FM signal 10 10 10 10 -5 -5 -10 -10 -10 -10 0.5 1.5 0.5 2.5 time x 10 time x 10