Figure 2

Open-ended T-junction simulation. (a) WR-28 waveguide T-junction model in simulation. Dimensions are in mm. (b) Time-averaged electric fields when port 2 and 3 are terminated with matched impedances (c) Time-averaged electric fields for open air terminations at port 2 and 3. (d) Return loss S₁₁ at port 1 for droplets of four diameters (0.79, 1.98, 2.38, 3.18 mm) as the droplet moves from the edge of the T-junction arm to the center. Note that symmetry is inherent in the T-junction and therefore only half of the T-junction length is shown. (e) S₁₁ when an aluminum sphere is positioned at z = 25.82 mm [marked in (d)]. The diameter is varied in 30 μm steps from 0.1 to 3.5 mm.