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1 Microelectronics  CH1 Why Microelectronics?  CH2 Basic Physics of Semiconductors  CH3 Diode Circuits  CH4 Physics of Bipolar Transistors  CH5 Bipolar.

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Presentation on theme: "1 Microelectronics  CH1 Why Microelectronics?  CH2 Basic Physics of Semiconductors  CH3 Diode Circuits  CH4 Physics of Bipolar Transistors  CH5 Bipolar."— Presentation transcript:

1 1 Microelectronics  CH1 Why Microelectronics?  CH2 Basic Physics of Semiconductors  CH3 Diode Circuits  CH4 Physics of Bipolar Transistors  CH5 Bipolar Amplifiers  CH6 Physics of MOS Transistors  CH7 CMOS Amplifiers  CH8 Operational Amplifier As A Black Box

2 2  1.1 Electronics versus Microelectronics  1.2 Example of Electronic System: Cellular Telephone  1.3 Analog versus Digital Chapter 1 Why Microelectronics?

3 Electronics vs Microelectronics  100 년전 Electronics 태동  2 차 대전 동안 무선 및 Radar 통신에서 유용하게 사용됨  초기 시스템은 진공관으로 증폭  1940 년대에 첫 번째 Transistor 가 발명된 후 진공관을 대체  1960 년대에 Microelectronics 탄생 –1 개의 chip 에 수 많은 Transistor 집적 3

4 CH1 Why Microelectronics?4 Cellular Technology  Microelectronics 의 예  음성신호를 송수신하기 위한 Black box 에 Microelectronics 존재.

5 CH1 Why Microelectronics?5 Frequency Up-conversion  음성은 두 sine 파 신호를 곱하여 “up-converted”.  시간영역에서 두 sine 파를 곱할 때, spectrum 은 주파수 영역에서 convolution 을 취함.

6 CH1 Why Microelectronics?6 Transmitter  두 주파수는 곱하고 난 후 안테나로 방사 (a).  power amplifier ( 전력증폭기 ) 가 신호를 증폭하기 위하여 추가됨 (b).

7 CH1 Why Microelectronics?7 Receiver  고주파신호는 f C 와 곱하여서 DC 로 변환  low-noise amplifier ( 저잡음증폭기 ) 가 잡음증폭 없이 신호를 증폭하기 위하여 필요

8 CH1 Why Microelectronics?8 Digital or Analog?  X 1 (t) is operating at 100Mb/s and X 2 (t) is operating at 1Gb/s.  A digital signal operating at very high frequency is very “analog”.


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