115A_1_EE115A_W10-Chap1

115A_1_EE115A_W10-Chap1 - CH1 Why Microelectronics? 8 h Two...

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h 1.1 Electronics versus Microelectronics Chapter 1 Why Microelectronics? 5 h 1.2 Example of Electronic System: Cellular Telephone h 1.3 Analog versus Digital
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Cellular Technology CH1 Why Microelectronics? 6 h An important example of microelectronics. h Microelectronics exist in black boxes that process the received and transmitted voice signals.
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Frequency Up-conversion CH1 Why Microelectronics? 7 h Voice is “up-converted” by multiplying two sinusoids. h When multiplying two sinusoids in time domain, their spectra are convolved in frequency domain.
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Transmitter
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Unformatted text preview: CH1 Why Microelectronics? 8 h Two frequencies are multiplied and radiated by an antenna in (a). h A power amplifier is added in (b) to boost the signal. Receiver CH1 Why Microelectronics? 9 h High frequency is translated to DC by multiplying by f C . h A low-noise amplifier is needed for signal boosting without excessive noise. Digital or Analog? CH1 Why Microelectronics? 10 h X 1 (t) is operating at 100Mb/s and X 2 (t) is operating at 1Gb/s. h A digital signal operating at very high frequency is very analog....
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This note was uploaded on 01/08/2011 for the course EE 115 taught by Professor Kaiser during the Spring '09 term at UCLA.

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115A_1_EE115A_W10-Chap1 - CH1 Why Microelectronics? 8 h Two...

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