The common−emitter circuit shown in Figure 7.34 contains both a coupling capacitor and an emitter bypass capacitor. (a) From a computer analysis, determine the 3dB frequency. Assume the parameter values are β = 100 and I S = 2 × 10 -15 A . (b) Determine the midband small−signal voltage gain. (Ans. (a) f 3 d B ≈ 575 Hz , (b) | A υ | max = 74.4 ) Figure 7.34 Figure for Exercise TYU 7.5
The common−emitter circuit shown in Figure 7.34 contains both a coupling capacitor and an emitter bypass capacitor. (a) From a computer analysis, determine the 3dB frequency. Assume the parameter values are β = 100 and I S = 2 × 10 -15 A . (b) Determine the midband small−signal voltage gain. (Ans. (a) f 3 d B ≈ 575 Hz , (b) | A υ | max = 74.4 ) Figure 7.34 Figure for Exercise TYU 7.5
Solution Summary: The author illustrates how the 3dB frequency and mid-band gain can be calculated using PSPICE.
The common−emitter circuit shown in Figure 7.34 contains both a coupling capacitor and an emitter bypass capacitor. (a) From a computer analysis, determine the 3dB frequency. Assume the parameter values are
β
=
100
and
I
S
=
2
×
10
-15
A
. (b) Determine the midband small−signal voltage gain. (Ans. (a)
f
3
d
B
≈
575
Hz
, (b)
|
A
υ
|
max
=
74.4
)
7)
This MCQ QUESTION FROM ANTENNA ENGINEERING course.
There exist several methods to perform AM demodulation, consider a requirement where we intend to design an AM receiver which is characterized by less distortion and high SNR.Identify which type of AM demodulation scheme is mentioned in the above statement and explain one such demodulation with appropriate sketch.Compare and contrast different AM modulation and demodulation schemes in various aspectsExplore one interesting application area involving Amplitude Modulation with explanation and neat sketch.
1.Select the correct statement(s) regarding frequency modulation (FM) bandwidth.
a. the more the carrier frequency is allowed to change frequencies (Δf), the smaller the modulated signal bandwidth
b. the larger the FM index, β, the larger the modulated signal bandwidth
c. as you increase kvco, you decrease modulated signal bandwidth
d. all statements are correct
2. Select the correct statement(s) regarding baseband signal modulation.
a. with modulation, a baseband signal can be moved to a higher frequency thus preventing baseband signal interference
b. modulation techniques are only required for analog information signals, since digital signals are represented by discrete logical values of “1” and “0”
c. modulation eliminates the baseband signal’s frequency bandwidth, thus enabling greater efficiencies when transmitting a modulated carrier signal
d. all statements are correct
3. A…
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