MATLAB MNA

Modified Nodal Analysis by using MATLAB

This program gets an electrical circuit netlist like HSPICE and gives you the Bode (Frequency Response) Plot using Modified Nodal Analysis in MATLAB.

Getting Started

To run the program, first open MATLAB and add to path the src folder and its subfolders.

Open Main.m and assign your netlist file name to the file variable.

Tips

The netlist file is similar to HSPICE, but there are some minor differences:

• Don’t write ac for independent voltage sources. (Only ac independent voltage sources are supported by this program, so there is no need to mention.)

• Also don’t mention ac for the method of analysis.

• You must determine the input and output nodes of the circuit for computing the frequency response.

• You don’t need to write .end in the last line of the netlist file.

• Only integer numbers are allowed to define nodes.

• Only these components are supported:

  • R (Resistor)
  • C (Capacitor)
  • L (Inductor)
  • V (Voltage Source)
  • I (Current Source)
  • E (Voltage Controlled Voltage Source)
  • G (Voltage Controlled Current Source)

• Use the following format to define necessary fields for analysis plot:

.    <min-frequency>    <max-frequency>    <input-node>    <output-node>

Netlist Example

***Example-1

Vin	1	0	1
R1	1   	2	10k
C1	2	0	100u

.	0.01	100	1	2

Author

Rabist - view on LinkedIn

Details

• Course: Electrical Circuits - Undergraduate
• Teacher: Dr. Sayed Alireza Sadrossadat
• Univ: Yazd University
• Semester: Fall 1398

License

Licensed under MIT.