CHAPTER 17 FOURIER SERIES

1
CHAPTER 17FOURIER SERIES
2
Periodic Signals

• Periodic signals
• ????????????? periodic signal ????
  ????????????????????
• ???

3
Amplitude-Phase Form

• ?????????????? Fourier series ????????????? ????
• ???
• Amplitude
• Phase

4
Circuit Applications

• ????????????????????????????????? (linear
  circuit) ???????????????? superposition ???
  ??????
• ????

5

• ?????????? ???????? input
• ????????? transfer function
• ????????
• ??????????????? ???????????????? cosine
  ????????????????????????????????
  ?????????????????????????????????????????????????
  transfer function ? ??????????? ????? phase
  ?????????? phase ??? transfer function ?
  ??????????????????

6

• ???????????????? input ???????????????
• ???????????
• ????????????? Example 17.6 ??? 17.7 ???? 778-779
  ??????

7
Average Power and RMS Values

• Root Mean Squared (RMS) values ???
  ??????????????????????????????????????????
• ??? RMS ??????????????????????? ???????????????
  power ????????????????????? DC ???????????????
  ??????? average power

8

• ???????? RMS ????????? ???????????????????????????
  ????????? ???????????

9
????

• ???????????? Fourier series ??????????????????????
  ???? ??????? output ?????????? input ???
  transfer function ?????
• ?????? input ????????????? ???????????????????????
  ???? (periodic) ????????????????????
  ??????????????????????????
• ????????????????????????????? ????????????????????
  ?? Fourier transform ?????? ???????????????????