11.31 An antenna, connected to a 150-22 lossless line, produces a standing wave ratio of 2.6. If measurements indicate that voltage maxima are 120 cm apart and that the last maximum is 40 cm from the antenna, calculate (a) The operating frequency (b) The antenna impedance (c) The reflection coefficient. Assume that u = c. 11 32 The observed standing wave ratio on a 100.0 lossless line is 8 If the first max