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# 这个作业是使用Matlab解决电磁问题的代写

Electromagnetics, Antennas and Propagation – assignment #1
1. Calculate the potential at points P, Q, R, S and T when the central right-hand side metal plate is at -5V and also when it is at +5V.
2. Draw a contour map showing the potential for both bias situations.
3. Compare the results with those obtained with the Partial Differential Equation Toolbox of Matlab (or any other electromagnetic software).
4. Calculate the magnitude of the electric field |E| and the flux density |D| at P, Q, R, S and T for both bias conditions.
5. For both bias conditions, calculate the capacitance per unit length (i) between both central plates and (ii) between each central plate and all the other metal boundaries using your program and compare them with those of parallel plate capacitors of the same size neglecting fringing fields (i.e., fields outside the capacitor are neglected).
εr = 9, μr = 1xPoint S(3,1)x Coordinate origin (0,0)+5V Outer box at potential 0Vx(4.5,2)x Point P(5,3) 6 mm 12 mmxPoint T(-1,1)xPoint R(8,1)εr = 1, μr = 1 (Air)Point Q(1,2)x5Vx(2.5,2)
Dr Miguel Navarro-Cía
6. Using the capacitances from 5, calculate the total capacitance of the edge-coupled grounded coplanar waveguide neglecting fringing fields for both bias conditions.
7. If the structure were a transmission line extending into the page, what is the velocity of the electromagnetic wave along the line for either of the bias conditions?
8. Research the literature of edge-coupled coplanar waveguides and find the expressions for computing the total even- and odd-mode capacitance per unit length. Compare your results with those obtained from such expressions.
Submission details
A report is required with a description of how you tackled the problem and the answers to the seven questions.
The report should be self-contained with a good description of the methods you used. 