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Using the message signal m(t) = 1/(1+t^2) , determine and sketch the modulated signals for the following methods of modulation:
(c) SSB modulation with only the upper sideband transmitted.
(d) SSB modulation with only the lower sideband transmitted.
Discuss whether this is still true today, and what factors are moving wireless NICs into a more dominant role, if any.
1- Draw a circuit whose output goes to + V sat . When the input signal is below -4V. the output should be -V sat, when the input is above - 4V 2- Design a - 90 phase shift circuit at 1590 Hz , Then for your design calculate 0 at 15 Hz, & 15 KHz
Telephone channels and PCM analysis, The analog to digital converter (ADC) used in a telephone system outputs 8 bit words. The digital words are transmitted as a serial stream to form a PCM voice signal
a) Construct a choice table for interest rates from 0% to 100%. b) Which roof should you choose if your MARR is 12% what is the actual value of the IRR on the incremental cost?
What is the magnitude of the frequency component at 30 kHz? The square wave is passed through an ideal rectangular low pass filter that completely attenuates all frequencies higher than 35 kHz. Write down an equation for the spectrum at the output ..
Single Phase Circuit, A resistor and a capacitor are connected in series across a 150 V a.c supply. When the frequency is 40 Hz the current is 5 A
"Divide by 3 clock with 50% duty cycle" is the most commonly asked ASIC design question. This solution gives a simple design in which only 1 counter is required which works only on positive edge of the clock.
Seawater with a specific weight of 64.0 lbs/ft^3 is at a level of 4 feet above the centerline of the exit pipe. The tank is closed at the top and there is a pressure of 1 psig above the seawater. What is the velocity at the end of the pipe
Gold cost about $100 an ounce in 1971. In 2007, the cost of an ounce of gold is hovering around $800. compute the average price increase for gold.
How could the rising-tone acoustical illusion be modified to obtain a tone that goes up and down in pitch at the same time.
Assume that an additional inductance can be inserted in series with the load. also assume that the converter has no freewheeling diodes. Calculate the added inductance that leads to a conduction period of 180 degrees when alpha = 30 degrees.
What are the two possible frequencies to which the local oscillator could be set? What bandwidth should the 10.7 MHz IF amplifier have?
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