Microwave Tomographic Imaging Utilizing Low-Profile, Rotating, Right Angle-Bent Monopole Antennas

Figure 4

Measured return loss for (a) the clinical imaging system’s traditional encapsulated monopoles (antenna_1 and antenna_2, resp.), (b) the straight monopoles prior to bending (antenna_3 and antenna_4, resp.), (c) the bent monopoles (antenna_5 and antenna_6, resp.), and (d) the bent monopoles incorporating the rotary joint (antenna_7 and antenna_8, resp.).