Electrical Engineering Answers

Write a Matlab Code for PM transmitter and receiver (for a sinusoid message signal) . If the carrier frequency offset is set to 10 Hz (in the Matlab code deltaf = 10) the demodulator implemented in the m-file still works pretty well with this frequency offset. Explain why. Note, at higher frequency offsets (e.g., 100 Hz) the performance suffers noticeable distortion

Note:

Saperate Code for Transmitter and Reciever

What is the main contribution of power in the environment?

Procedure

1. Using the LTspice XVII do the schematic below and set the V = 10v and R = 1k. In Edit simulation command go to transient then set the Stop time to 5s. Measure the voltage in Vout and the Current of the circuit then take a screenshot of each results.

2. Using the Ohm`s Law and the values of step 1, calculate and record the current value. I = ________________mA

3. Using the LTSpice XVII do the schematic below and measure the current value after the Resistor, take a screenshot of the result.

 I = ________mA

4. Using the Ohm`s Law and the values of step 3, calculate and record the current value. I = ________________mA

5. Raise the value of Voltage to obtain a reading of 15mA.

V = ___________volts

Design a 400Hz hum eliminator for an Airline radio transmission with the following specifications: Pass band: 0-400Hz Pass band ripple: 2dB Sampling frequency: 10 kHzStop band: 2.1 kHz- 4 kHz Stop band attenuation: 20dB 

Consider the single stage amplifier, values of h-parameters are hie=15kΩ, hfe=(150-1), hre=15˟10-4 and hoe=50µA/V. Rs=15 Ω, Calculate Av, Ai, Ri, Zo and also derive the relations which you used.

Consider the single stage amplifier, values of h-parameters are hie=15kΩ, hfe=(150-X1), hre=15˟10-4 and hoe=50µA/V. Rs=15Ω, Calculate Av, Ai, Ri, Zo and also derive the relations which you used.

onsider the single stage amplifier, values of h-parameters are hie=X1.X2 kΩ, hfe=(150-X1), hre=X1. X2˟10-4 and hoe=50µA/V. Rs=X1X2 Ω, Calculate Av, Ai, Ri, Zo

Design a 400Hz hum eliminator for an Airline radio transmission with the following specifications:

Pass band: 0-400Hz

Pass band ripple: 2dB

Sampling frequency: 10 kHzStop band: 2.1 kHz- 4 kHz

Stop band attenuation: 20dB

When a frequency offset exists the complex envelope of the received signal will be rotating due to this frequency offset, i.e.,

where  is the existing frequency offset. Get the Matlab file angmodex1.m and angmodex3.m from the class web page. In these files a PM transmitter (for a sinusoid message signal) and receiver is implemented. If the carrier frequency offset is set to 10 Hz (in the Matlab code deltaf = 10) the demodulator implemented in the m-file still works pretty well with this frequency offset. Explain why. Note, at higher frequency offsets (e.g., 100 Hz) the performance suffers noticeable distortion. Extra credit will be given if you can figure out a method to eliminate this distortion.

In IC 4013 if Preset =1 and Clear = 1, then Q output of the flip flop will be