As a first year graduate student, you are assigned to assist a 3d year ph. d. student with his thesis project -working with optical communications devices. the senior student tells you to characterize a waveguide that is 10 m long and lossless. the waveguide can be treated as a parallel plate waveguide filled with a spacing of 2.5 mm between the plates (which can be treated as perfect conductors). inside the waveguide is a dielectric with & 9eo and does not depend on frequency. you will be sending pulses at the frequencies 27 ghz, 30 ghz, 35 ghz and 39.5 ghz a) which modes will propagate in the waveguide? b) what are the group velocities for the pulse in each mode? what are the phase velocities? c) for each mode higher than tem, calculate group delay of each pulse at the end of the waveguide. d) what type of dispersion, if any, does each pulse experience in each mode? partial solution: (b) tm: v c/n=1 x 10 m/s. tmi, te: v67.2x 10 m/s, 74.5 x 10 m/s, 82.1 x 10 m/s, 86.2 x 10°m/s; v149 x 10 m/s, 1.34 x 10 m/s, 1.22 x 10 m/s, 1.16 x 10 m/s. (c) tmo: 33.3 ns. tm, te: 149 ns, 134 ns, 122 ns, 116 ns.
Answers: 2
Physics, 22.06.2019 22:30
When you hold a rectangular object, how does the area of the side that is resting on your hand affect the pressure and the force that the object exerts?
Answers: 3
Physics, 23.06.2019 03:00
Pressure is a measure of force per unit area or p=f/ap=f/a. a student is checking the amount of pressure their car exerts upon the road. the car weighs 22 tons ( us short ton ). the student finds the dimensions of each tire's footprint on the road is 12.5 cm x 16.5 cm. in pounds per square inch (psi), what is the total pressure the car exerts upon the road?
Answers: 2
Physics, 23.06.2019 08:30
Amoving freight car collides with an identical one that is at rest. if momentum is conserved, what happens to the second car after the collision? it attains the same speed as the first car. it moves at half the speed of the first car. it moves at twice the speed of the first car.
Answers: 3
As a first year graduate student, you are assigned to assist a 3d year ph. d. student with his thesi...
Mathematics, 16.02.2021 19:30
Mathematics, 16.02.2021 19:30
Mathematics, 16.02.2021 19:30
Mathematics, 16.02.2021 19:30
Mathematics, 16.02.2021 19:30
Social Studies, 16.02.2021 19:30
Physics, 16.02.2021 19:30
Mathematics, 16.02.2021 19:30
Mathematics, 16.02.2021 19:30
Spanish, 16.02.2021 19:30
Mathematics, 16.02.2021 19:30