Microelectronics: Circuit Analysis and Design
4th Edition
ISBN: 9780073380643
Author: Donald A. Neamen
Publisher: McGraw-Hill Companies, The
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Chapter 7, Problem 7.9EP
To determine
The values of
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An Armstrong method is used to generate WBFM with a carrier 768MHz and
Al-388.8KHz. A narrowband indirect FM with fe-150KHz and Af-75Hz. Only the fourth
triple frequency and any number of doubles are available as frequency multipliers. In
addition, an oscillator with a frequency from 50-200 KHz is also available.
05
A DSB-SC AM signal is modulated by the signal
71 (?) == Bcos2000nt + cos6000nt
The modulated signal is u(:) -- 100m (:)cos2nf,t
1-Determine and sketch the spectrum of the AM signal.
2-Determine the average power in the frequency components.
where f = 1 MH:
Q2. From the UJT data sheet:
+50V
From the UJT data sheet:
100 N
n = 0.7, Vs = 2V, Ip = 60µA, I, = 1.8mA,
RBB = 6 k2, Vgmin = 0.4V.
R2
R1
Calculate the frequency range, the range
RL
of R1, and determine the value
of R2, and R3.
Vz=20V
C = 0.1µF
R3
Chapter 7 Solutions
Microelectronics: Circuit Analysis and Design
Ch. 7 - (a) For the circuit shown in Figure 7.2, the...Ch. 7 - The circuit shown in Figure 7.10 has parameters of...Ch. 7 - For the equivalent circuit shown in Figure 7.13,...Ch. 7 - The equivalent circuit in Figure 7.14 has circuit...Ch. 7 - The parameters in the circuit shown in Figure 7.15...Ch. 7 - For the circuit shown in Figure 7.2 1(a), the...Ch. 7 - Consider the circuit shown in Figure 7.22(a). The...Ch. 7 - For the emitterfollower circuit shown in Figure...Ch. 7 - The circuit shown in Figure 7.27(a) has parameters...Ch. 7 - Consider the common-base circuit shown in Figure...
Ch. 7 - The commonemitter circuit shown in Figure 7.34...Ch. 7 - A bipolar transistor has parameters o=120 ,...Ch. 7 - Prob. 7.9EPCh. 7 - For the circuit in Figure 7.41(a), the parameters...Ch. 7 - A bipolar transistor is biased at ICQ=120A and its...Ch. 7 - For the transistor described in Example 7.9 and...Ch. 7 - The parameters of a bipolar transistor are: o=150...Ch. 7 - The parameters of an nchannel MOSFET are...Ch. 7 - For the circuit in Figure 7.55, the transistor...Ch. 7 - An nchannel MOSFET has parameters Kn=0.4mA/V2 ,...Ch. 7 - An nchannel MOSFET has a unitygain bandwidth of...Ch. 7 - For a MOSFET, assume that gm=1.2mA/V . The basic...Ch. 7 - The transistor in the circuit in Figure 7.60 has...Ch. 7 - Consider the commonbase circuit in Figure 7.64....Ch. 7 - The cascode circuit in Figure 7.65 has parameters...Ch. 7 - Prob. 7.12TYUCh. 7 - For the circuit in Figure 7.72, the transistor...Ch. 7 - Describe the general frequency response of an...Ch. 7 - Describe the general characteristics of the...Ch. 7 - Describe what is meant by a system transfer...Ch. 7 - What is the criterion that defines a corner, or...Ch. 7 - Describe what is meant by the phase of the...Ch. 7 - Describe the time constant technique for...Ch. 7 - Describe the general frequency response of a...Ch. 7 - Sketch the expanded hybrid model of the BJT.Ch. 7 - Prob. 9RQCh. 7 - Prob. 10RQCh. 7 - Prob. 11RQCh. 7 - Sketch the expanded smallsignal equivalent circuit...Ch. 7 - Define the cutoff frequency for a MOSFET.Ch. 7 - Prob. 14RQCh. 7 - Why is there not a Miller effect in a commonbase...Ch. 7 - Describe the configuration of a cascode amplifier.Ch. 7 - Why is the bandwidth of a cascode amplifier...Ch. 7 - Why is the bandwidth of the emitterfollower...Ch. 7 - Prob. 7.1PCh. 7 - Prob. 7.2PCh. 7 - Consider the circuit in Figure P7.3. (a) Derive...Ch. 7 - Consider the circuit in Figure P7.4 with a signal...Ch. 7 - Consider the circuit shown in Figure P7.5. (a)...Ch. 7 - A voltage transfer function is given by...Ch. 7 - Sketch the Bode magnitude plots for the following...Ch. 7 - (a) Determine the transfer function corresponding...Ch. 7 - Consider the circuit shown in Figure 7.15 with...Ch. 7 - For the circuit shown in Figure P7.12, the...Ch. 7 - The circuit shown in Figure 7.10 has parameters...Ch. 7 - The transistor shown in Figure P7.14 has...Ch. 7 - Consider the circuit shown in Figure P7.15. The...Ch. 7 - The transistor in the circuit shown in Figure...Ch. 7 - For the common-emitter circuit in Figure P7.17,...Ch. 7 - The transistor in the circuit in Figure P7.20 has...Ch. 7 - For the circuit in Figure P7.21, the transistor...Ch. 7 - (a) For the circuit shown in Figure P7.22, write...Ch. 7 - Consider the circuit shown in Figure P7.23. (a)...Ch. 7 - The parameters of the transistor in the circuit in...Ch. 7 - A capacitor is placed in parallel with RL in the...Ch. 7 - The parameters of the transistor in the circuit in...Ch. 7 - Prob. D7.27PCh. 7 - The circuit in Figure P7.28 is a simple output...Ch. 7 - Reconsider the circuit in Figure P728. The...Ch. 7 - Consider the circuit shown in Figure P7.32. The...Ch. 7 - The commonemitter circuit in Figure P7.35 has an...Ch. 7 - Consider the commonbase circuit in Figure 7.33 in...Ch. 7 - Prob. 7.39PCh. 7 - The parameters of the transistor in the circuit in...Ch. 7 - In the commonsource amplifier in Figure 7.25(a) in...Ch. 7 - A bipolar transistor has fT=4GHz , o=120 , and...Ch. 7 - A highfrequency bipolar transistor is biased at...Ch. 7 - (a) The frequency fT of a bipolar transistor is...Ch. 7 - The circuit in Figure P7.48 is a hybrid ...Ch. 7 - Consider the circuit in Figure P7.49. Calculate...Ch. 7 - A common-emitter equivalent circuit is shown in...Ch. 7 - For the common-emitter circuit in Figure 7.41(a)...Ch. 7 - For the commonemitter circuit in Figure P7.52,...Ch. 7 - Consider the circuit in Figure P7.52. The resistor...Ch. 7 - The parameters of the circuit shown in Figure...Ch. 7 - The parameters of an nchannel MOSFET are kn=80A/V2...Ch. 7 - Find fT for a MOSFET biased at IDQ=120A and...Ch. 7 - Fill in the missing parameter values in the...Ch. 7 - (a) An nchannel MOSFET has an electron mobility of...Ch. 7 - A commonsource equivalent circuit is shown in...Ch. 7 - Prob. 7.60PCh. 7 - The parameters of an ideal nchannel MOSFET are...Ch. 7 - Figure P7.62 shows the highfrequency equivalent...Ch. 7 - For the FET circuit in Figure P7.63, the...Ch. 7 - The midband voltage gain of a commonsource MOSFET...Ch. 7 - Prob. 7.65PCh. 7 - Prob. 7.67PCh. 7 - The bias voltages of the circuit shown in Figure...Ch. 7 - For the PMOS commonsource circuit shown in Figure...Ch. 7 - In the commonbase circuit shown in Figure P7.70,...Ch. 7 - Repeat Problem 7.70 for the commonbase circuit in...Ch. 7 - In the commongate circuit in Figure P7.72, the...
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- Armstrong’s method used to generate a WBFM signal. The required WBFM signal must have fc = 5MHz and ∆f = 25 kHz. If ??1 = 25???and f?2 = 2.025MHz and crystal oscillator frequency is (43/120) M??, Draw the schematic block diagram and find all the parameters of it.arrow_forward(a) A 1 MHz carrier with an amplitude of 1V is modulated by a 1 kHz signal with m=0.5. Sketch the voltage spectrum. (b) An additional 2 kHz signal modulates the carrier with m=0.2. Sketch the new spectrum.arrow_forwardEXERCISES: 1. An AM signal has the following characteristics; the carrier frequency is 150MHz; the modulating signal frequency is 3KHz; the carrier voltage is 60V, where the modulating signal is 20V. Find the peak voltage of lower side frequency. 2. Determine whether the given equation of AM signal represents an overmodulation or not. VAM (t)=5sin (2л630,000t) +7cos (21625,000t) +7cos (21635,000t)arrow_forward
- 2. Compare between TEmn and TMmn modes.arrow_forward= The design spectrum has Sps = 1.8, SD1 = 0.9, S₁ 1.1, I = 1.00, and R = 6. Determine C, if the period is 0.4 sec. Give the answer to three decimals. Assume that the period is not longer than TL.arrow_forwardDetermine the modulation index for a PM modulator with a deviation sensitivity of kp= 1.7 rad/V and a modulating signal of vm(t) = 7cos (2π3000t). A phase modulator has kp= 2.8rad/V. What rms voltage of a sine wave causes a peak phase deviation of 74°? Determine the peak phase deviation for a PM modulator with deviation sensitivity K = 3.8 rad/V and a modulating signal vm= 12 sin(2π1000t).arrow_forward
- In an FM broadcast transmitter, the carrier signal is being deviated between 103.505MHz and 103.495MHz, 1200 times/sec by a 5V sinusoid. How to prove that the percent modulation is 6.67%arrow_forwardCalculate the minimum “a” dimension needed to support a 0.75 cm signal in the dominant mode in a rectangular waveguide.arrow_forwardHow many channels are available in the 5 GHz band? List all the channels. What is the channel bandwidth?arrow_forward
- 1. Knowing that carrierfrequency=10MHz and Δfpeak=20kHz Find, using Bessel plots and Carson's rule,the bandwidth of the modulated wave, for modulating frequency=a) 200kHz,b)200Hz,c) 10kHz2. sketch the spectrum infrequency.arrow_forward7 In an RLC circult, assume wn and wn such that I(jon) = I(joz) = Imux//2 and Aw such that Aw = w2 – w1. In other words, Aw is the width of the current curve where the current has fallen to 1//2 = 0.707 of its maximum value at the resonance frequency. At these frequencies, the power dissipated in a resistance becomes one-half of the dissipated power at the resonance frequency (they are called the half-power points). In an RLC circuit with a high quality factor, show that Q= wo/Aw.arrow_forward2. Write an OCTAVE program to plot the signal given below. P- Pmax Sin(21Ift); where Pmax= 10 MW, -60 Hz. %3D Find out time period and verify it with graph. Assume necessary data.arrow_forward
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