1. (20 points) Please provide short answers to the following questions: a) If wavelength of a wave is 10 mm in vacuum, what is the wavelength of that when it enters a material with 84? b) Which transmission line is more sensitive to interferences: coaxial cable or twin lead cable? c) For a TEM wave propagating along z axis, which components of the electromagnetic fields are zero? d) At extremely high frequencies, the dielectric material of the coaxial connectors is Teflon or air? e) What is the main advantage of using rectangular waveguide instead of coaxial cable? 1) When delivering microwave power to a load, what is the desired reflection coefficient le for the load? What is the desired SWR for the load? g) If a load with impedance of 30 2 is connected to a transmission line with characteristic impedance of 502, what would be the characteristic impedance of a 14 impedance transformer for implementing impedance matching? h) Write the expression for complex Poynting vector. i) For a TEM wave when propagation is along z-axis, what is the direction of Poynting vector? j) Ifa TEM wave with E field strength of 1 mV/m enters a medium, what is the field strength after penetration of one skin depth