A rectangular waveguide cavity in Fig.1 is essentially a hollow (filled by air) metallic box in the shape of a rectangular prism with side lengths a,b and d along x,y and z axes, respectively, as shown in the figure below. Assume that the closed walls of this cavity are made of perfect conductors. A set of possible electromagnetic field solutions (which can exist within this cavity) has the E phasor in the following form E=ayE0 sin(πx/a) sin(ßz) (V/m) Assume that E0 is a known real constant. a) Obtain the H phasor for these solutions. b) Determine all possible values of ß in terms of the cavity dimension d by using the boundary condition satisfied by E at the perfectly conducting cavity wall placed at z=d.

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A rectangular waveguide cavity in Fig.1 is essentially a hollow (filled by air) metallic box in the shape of a rectangular prism with side lengths a,b and d along x,y and z axes, respectively, as shown in the figure below. Assume that the closed walls of this cavity are made of perfect conductors. A set of possible electromagnetic field solutions (which can exist within this cavity)
has the E phasor in the following form

E=ayE0 sin(πx/a) sin(ßz) (V/m)

Assume that E0 is a known real constant.
a) Obtain the H phasor for these solutions.
b) Determine all possible values of ß in terms of the cavity dimension d by using the boundary condition satisfied by E at the perfectly conducting cavity wall placed at z=d.

Cavity wall at z = d
a
Eo, Ho
d.
Fig. 1
y
Transcribed Image Text:Cavity wall at z = d a Eo, Ho d. Fig. 1 y
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