Consider two identical antennas separated by 9.00 m that radiate in phase at 120 MHz. A receiver placed 150 m from both antennas measures an intensity Io. The receiver is moved so that it is 1.8 m closer to one antenna than to the other.

An interference filter has a dielectric layer (refractive index 1.34) with a thickness of 0.805 μm. If the determination is to be based on the first-order interference, calculate the wavelength (nm) can be transmitted?

A woman is listening to her radio, which is 182 m from the radio station transmitter. (a) How many wavelengths of the radio waves are there between the transmitter and radio receiver if the woman is listening to an AM radio station broadcasting at 1260 kHz? wavelengths (b) How many wavelengths are there between the transmitter and radio if she changes to an FM station broadcasting at 92.1 MHz? wavelengths

PROBLEM 4: A transmitter is transmitting radio signal of 50 MHz with 100 kW output power. Find the field strength due to space wave at a distance of 100 km when the heights of transmitting and receiving antennas are 100 m and 36 m respectively. Assume that the field strength from the transmitting antenna is same as that of half wave antenna.

A politician holds a press conference that is televised live. The sound picked up by the microphone of a TV news network is broadcast via electromagnetic waves and heard by a television viewer. This viewer is seated 2.3 m from his television set. A reporter at the press conference is located 4.2 m from the politician, and the sound of the words travels directly from the celebrity's mouth, through the air, and into the reporter's ears. The reporter hears the words exactly at the same instant that the television viewer hears them. Using a value of 343 m/s for the speed of sound, determine the maximum distance between the television set and the politician. Ignore the small distance between the politician and the microphone. In addition, assume that the only delay between what the microphone picks up and the sound being emitted by the television set is that due to the travel time of the electromagnetic waves used by the network.

Problem: A 3.46m diameter university communications satellite dish receives TV signals that have a maximum electric field strength (for one channel) of 7.87μV/m Part a: What is the intensity, in watts per squared meter, of this wave? Part b: What is the power, in watts, received by the antenna? part c: If the orbiting satellite broadcasts uniformly over an area of 1.50×1013m2(a large fraction of North America), how much power, in watts, does it radiate?

You have decided to increase the detection range of your iphone14 with a highgain, directional parabolic dish antenna to be able to access more distant cell towers (somewhat more difficult to get into your pocket or purse, however). A 3m-diameter parabolic dish is readily available commercially, and the desired sinusoidal radio signal specification is for Emax = 0.10 µV/m. Assume the antenna absorbs all the radiation that is captured by the dish (100% efficiency): (a)  What is the amplitude of the magnetic field in this signal? (b)  What is the intensity, I, of the radiation received by the antenna? (c) What is the power received by the antenna?

Two identical sources A and B emit in-phase plane radio waves with frequency 7.84E4 Hz and intensity 1.78E2 W/m2. A detector placed at location P closer to source B than source A detects a destructive interference. What is the intensity of the wave detected by the detector (in W/m2)?

3. Calculate the polarization loss factor (PLF)...in db and dimensionless of an antenna whose electric field polarization is expressed as: E = (ax+ ay)E(r,0,0), when the electric field of the incident wave given by E, = ax E, (x, y)e-k=