Create an FM radio receiver circuit in LTSPICE (88MHz-108MHz

Free Chegg Q&A #924 - Create an FM radio receiver circuit in LTSPICE (88MHz-108MHz

Create an FM radio receiver circuit in LTSPICE (88MHz-108MHz). Use the FM generator provided by LTSPICE as the input. Please show the simulation results showing (88MHz-108Mhz) through graphs, .meas statements, or any method. Thank you so much ma'am/sir

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1 General guidance

The answer provided below has been developed in a clear step by step manner.

2 Step By Step

Step 1

Solution; electrical engineering

STEP 1: Create a Schematic

Create a new schematic in LTSPICE by selecting File -> New -> Schematic. Add the following components to the schematic:

- An FM generator ( FM1 in the Sources library)

- An NPN BJT (Q1 in the Devices library)

- A 100uH inductor (L1 in the Devices library)

- A 1nF capacitor (C1 in the Devices library)

- A 10K resistor (R1 in the Devices library)

Wire the components together as follows:

FM1's output (OUT) -> Q1's base (B)

Q1's collector (C) -> L1's lead 1

L1's lead 2 -> R1's lead 1

R1's lead 2 -> C1's lead 1

C1's lead 2 -> GND

STEP 2: Set Simulation Parameters

To run a simulation, set the following parameters:

-Simulation type: Transient

-Stop time: 10ms

-Maximum step size: 0.0001ms

-Transient options: Use Start DC and Plot every 0.001ms

STEP 3: Run the Simulation

Select the Run button in LTSPICE to run the simulation. After the simulation is complete, LTSPICE will display a graph for the voltage output at the collector of the NPN BJT, which is the output of the FM receiver circuit.

STEP 4: Analyze the Results

To measure the frequency of the output signal, add a .MEAS statement with the following parameters:

.MEAS FREQ FIND V(C1) AT=1 CROSS 0.2

This measure statement will find the frequency at which the voltage at the collector of the BJT (V(C1)) crosses the 0.2V threshold. The output of the FM receiver circuit should be able to receive signals in the frequency range of 88MHz to 108MHz. To verify this, change the frequency of the FM generator to 88MHz and re-run the simulation. Then, change the frequency of the FM generator to 108MHz and re-run the simulation again.

The voltage output at the collector should remain relatively constant for these two different frequencies, which indicates that the circuit is able to receive signals in the 88MHz-108MHz range. The .MEAS statement should also report the correct frequency for both input signals.

Explanation

From the given information I have provided the solution,

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Step 2

From the given information I have provided the solution,

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Explanation

From the given information I have provided the solution,

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3 Answer

From the given information I have provided the solution,

Please refer the solution above if you have any doubt then please leave a comment