Fundamentals of Engineering Electromagnetics 1st Edition by David Cheng

Exercise 7

Guide wavelength and impedances can be measured by means of a detector attached to a probe moving along a slotted section of a waveguide. Assuming that when ashorting conducting plane is placed at the load end of a lossless hollow 2.50 (cm) × 1.25 (cm) rectangular waveguide operating at the TE 10 mode, adjacent voltage minima are 2.65 (cm) apart. When the shorting plane is replaced by a load, it is found that the SWR is 2.0 and that the voltage minima have been shifted toward the load by 0.80 (cm). Find (a) the operating frequency, (b) the load impedance, and (c) the power delivered to the load for an input power of 10 (W).