16. There is a hollow cavity made of copper with the dimensions of a = b = d = 2 cm. Assuming the quality factor, Q =, of the TE₁₁₁ mode in this cavity is 11500, what is the closest cavity bandwidth (Δf) of the mode TE₁₁₁? (A) 1.13 MHz (B) 1.33 MHz (C) 1.41 MHz (D) 1.52 MHz

3. A lossy dielectrics (conductivity = σ, absolute permittivity = ε) is placed between two parallel perfect metal plates, as shown in the figure below. The areas of the metal plates are A (A = W×L). The distance between the metal plates is d and is much smaller than the length or width of the metal plates (d ＜＜ W and d ＜＜ L). Applying a voltage V₀ between the perfect metal plates, please evaluate the ratio between the storage energy and dissipated power of this structure (Estorage/Pdiss). (A) (B) (C) (D) None of the above

16. There is a hollow cavity made of copper with the dimensions of a = b = d = 2 cm. Assuming the quality factor, Q =, of the TE₁₁₁ mode in this cavity is 11500, what is the closest cavity bandwidth (Δf) of the mode TE₁₁₁?
(A) 1.13 MHz
(B) 1.33 MHz
(C) 1.41 MHz
(D) 1.52 MHz

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