Question

Fields And Waves

For a rectangular waveguide (figure problem 1), with a-2b-5cm, find the cutoff frequency of the dominant mode fe in GHz. [f]

Verified

### Question 41242

Fields And Waves

3. Two long, metallic cylinders are centered on the z-axis. The inner cylinder, of radius 1 m, is held at 1 V. The outer cylinder, of radius 2 m, is held at -1 V. Find the radius at which phi = 0.

### Question 41241

Fields And Waves

2. Verify the divergence theorem for the field Ā= ir'z and the volume region given by 0 < I<1,1<y<2, 2 < z <3

### Question 41240

Fields And Waves

1. Point charges 5 nC and -2 nC are located at points (2,0, 4) and (-3,0,5), respectively. Find the y-component of E(1,-3,7) in free space.

### Question 36016

Fields And Waves

A N-turn resonant circular loop with a uniform current distribution and with a circumference of /4, is fed by a lossless balanced twin-lead transmission line with a characteristic impedance of 300 ohms. Neglecting proximity effects, determine the
(a) closest integer number of turns so that the input impedance is nearly 300 ohms;
(b) input impedance of the antenna;
(c) reflection coefficient;
(d) VSWR inside the transmission line.

### Question 36015

Fields And Waves

A small circular loop with a uniform current distribution, and with its classical omnidirectional pattern, is used as a receiving antenna. Determine the maximum directivity (dimensionless and in dB) using:
(a) Exact method.
(b) An approximate method appropriate for this pattern. Specify the method used.
(c) Another approximate method appropriate for this pattern. Specify the method used.

### Question 35824

Fields And Waves

17) What is the skin depth?

### Question 35823

Fields And Waves

16) What are the parameters of the plane wave in good conductors? What is the relationship between ?

### Question 35822

Fields And Waves

15) What are the parameters of the plane wave in freespace? What is the relationship between ?

### Question 35821

Fields And Waves

14) What are the parameters of the plane wave in lossless dielectrics? What is the relationship between ?

### Question 35777

Fields And Waves

For the wavegulde described in problem 7, what would be the usable frequency range?