RF MODULE

Model Definition
The governing equation for transverse electric (TE) waves with the transversal
component E z is given by
where n is the refractive index, and k 0 is the free space wave number.
The entrance and exit ports do not represent physical boundaries in the geometry. To
avoid reflection at these boundaries, matched boundary conditions make the
boundaries transparent to the wave.
Results and Discussion
The following figure shows the S-parameters as a function of frequency. The S 11
parameter corresponding to the reflectance is given by the curve with plus sign
markers. The S 21 parameter corresponding to the transmittance is given by the curve
with circle markers.
The resonances at 4.6 GHz, 5.3 GHz, and 6.0 GHz are the cavity resonances of the
dielectric region in the bend.
112 | CHAPTER 3: RF AND MICROWAVE MODELS
2 Ez
– ∇ ∇Ez n 2 ⋅ – k0 =
0