MATERIALS SCIENCE+ENGINEERING:WILEY PLUS
10th Edition
ISBN: 9781119815242
Author: Callister
Publisher: WILEY
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Chapter 1, Problem 4QAP
To determine
The three items that are made from polymeric materials. The specific polymer used for each item and its characteristic.
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6.7 Consider a baseband binary PAM system that transmits at 3600 bps with a bit
error rate less than 10-4. The channel introduces no distortion, but attenuates the
signal by 20 dB and has a bandwidth of 2.4 kHz. The channel noise is AWGN with a
power spectral density of 10-14 watts per Hertz (W/Hz). Design the optimum
transmitting and receiving filters, and determine the required transmit power.
6.10 In a baseband digital transmission, the bandwidth is 4 kHz, and the bit rate
must be at least 38.4 kbps. Assuming M-ary signaling, determine the range
of acceptable values of M, and the resulting bit error rate.
Assume a JFET device with VGS(0) = -1.3 and ipss = 20 mA. Design a self-biased
(Fig. 2) JFET common-source amplifier with the gain of -2 and a DC biasing that
allows the largest swing in ip. Note that you can choose Vcc to arrive at a desired
RD to meet the gain requirement. Since you are designing for a given gain, you
may have to check to see if JFET is biased correctly. (Hint: First find Rs for correct
VGs and then use the gain to compute RD. Finally, use RD and Rs to determine
Vec). Assume that the amplifier is to interface a source that expects a load of 50
2. Also, assume that the amplifier circuit is AC coupled at both ends with 3 dB
corner frequency of 15 kHz.
Chapter 1 Solutions
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- (1) A baseband PAM communication channel bandwidth is 100 KHz and has a noise power spectral density of 10^-9 W/Hz. The channel loss between the transmitter and receiver is 25dB. The application requires a bit rate of 500 Kbps and BER of less than 10^-5. The system uses raised cosine pulses with a roll-off factor of 0.25. Determine the minimum transmit power required. (2) Continuing problem 1. Everything for the previous problem stays the same BUT the best Power Amplifier you can afford has a maximum output power of 10 Watts. What will be estimated BER for the system?arrow_forwardExplain magnetic hysteresis and give examples of some calculationsarrow_forwardEXAMPLE 6.8 Suppose the samples of the nonideal received pulse are as follows: 0. m1 Design a three-tap ZF equalizer.arrow_forward
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