In Example 14.14, calculate the next two resonant frequencies for (a) and (b).
EXAMPLE 14.14
It is required to design a transmission line resonator made of a parallel plate transmission line. The dimensions and material properties are shown in Figure 14.27a. The length of the line at left is 0.4 m. The length of the line at right is 0.2 m.
(a) Calculate the first two resonant frequencies of the resonator.
(b) Suppose the short on the right-hand side is removed (Figure 14.27b). What are now the two lowest resonant frequencies?
