Design of a Low-Cost 2-D Beam-Steering Antenna Using Ferroelectric Material and the CTS Technology

Fig. 4. Smith Chart plot of measured for the case of no beam port (black) and with a 680- m beam port (white). For both cases, we see that the cavity is overcoupled. Fig. 5. Result for inferred axial electric field from bead‐pull measurement, overlaid with theory. The -coordinate is as shown in Fig. 2, with the bead pull along the beam axis. in the course of chemical cleaning. A bead pull was also performed, with the measurement seen in Fig. 5, overlaid with the result computed with the frequency-domain module of GdfidL. The dielectric bead was formed by tieing a knot in a length of surgical fiber made of nylon. The field profile data seen in Fig. 5 permit one to go on to infer peak electric field from cavity voltage, with the result m. Using (4), one may then infer a peak field from the power radiated. With from numerical simulation (GdfidL), and from measurement, a figure of kW corresponds to a cavity voltage of 7.9 kV, and a peak field of MV/m.