# ECET 310 Course / tutorialrank

## ECET 310 Course / tutorialrank

ECET 310 Week 3 Assignment Homework 3_2

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Computer Science - General Computer Science
1. Draw the frequency spectrum at the output of the first balanced modulator.
2. If the filter is a low pass filter, draw the frequency spectrum at the output of the filter and amplifier
3. Draw the frequency spectrum at the output of the second balanced modulator.
4. If the filter is a low pass filter, draw the frequency spectrum at the output of the filter and linear power amplifier.
5. Find the value for the required Q for the first filter.
6. Find the value for the required Q for the second filter.
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ECET 310 Week 2 Assignment Homework 2_1

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Computer Science - General Computer Science
1. Assume that a receiver has a first amplifier stage with a 5KW input resistance, a gain of 300, an input audio signal of 20 mV, and an operating temperature of 27oC. When the amplifier is operating with a bandwidth first of 10 MHz, find
(a) therms input noise levels
(b) the audio output levels
the rms output noise levels
2. We have an amplifier with a 1 MHz bandwidth and a 20 mV input signal. The input mV, output mV, and output mV.
Find
(a) SNR at the input
(b) SNR at the output
Noise figure
3. An FM receiver has at the input and at the output.
Calculate the receiver’s noise figure in dB’s.

4. A 300 W resistor is connected across the 300 W antenna input of a television receiver. The bandwidth of the receiver is 6 MHz, and the resistor is at room temperature (20oC). Find the noise power and noise voltage applied to the receiver input.
5. The signal at the input of an...