Phase Shift Keying

Question 0

What is the amount of phase change produced by modulating wave called?

Answer 0

Phase deviation

Question 1

Define phase modulation

Answer 1

When phase is changed in proportion to amplitude of modulating wave

Question 2

What is the decibel drop between major and minor lobes?

Answer 2

13.7dB

Question 3

What relationship do the major and minor lobes have?

Answer 3

2xminor lobe= major lobe

Question 4

What is the minimum bandwidth equal to?

Answer 4

Baud speed

Question 5

What is the baud speed x 2 equal to?

Answer 5

Null to null bandwidth

Question 6

What filter is usually used in PSK signals?

Answer 6

Band pass

Question 7

What filtering is being described? Bandwidth reduced, flatten top, missing side lobes

Answer 7

Raised cosine

Question 8

How does DPSK transmit data? As in, what does a phase change represent?

Answer 8

Phase change sends a 1, but reverts back to 0 after a full phase occurs.

Question 9

What are the other two names for polar plot?

Answer 9

Constellation diagram and space diagram

Question 10

What is the data rate of a BPSK with baud speed of 125B?

Answer 10

125bps