Lab04 - Microstrip Line Analysis

Install CST Studio Student Edition

Substrate: ε_r = 2.5, Tanδ = 0.002, H = 0.787mm, Tmet = 0.035mm

1. Find the microstrip line width w for Z₀ = 50 ohms.

2. Find the effective dielectric constant ε_re using the following formula.

3. Find the line wavelength λ using the following formula at 2.45 GHz.

4. Draw a 50-ohm line on a 50 mm x 50 mm substrate.

5. Simulate the line for S11, S21, S12, S22.

f = 1 - 5 GHz

Wave port at both ends of the microstrip line.

Solver: transient

5. From the simulation, find the magnitude |S21| (dB) and phase arg(S21) (deg) of the microstrip line at 2.45 GHz.

6. Compare 5 with the theoretical value.