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A Hertzian dipole is to be used by an radio amateur at 30 MHz. The FCC...
Solve the following: a. Compare the current required to radiate 10W from a Hertzian dipole of...
Solve the following: a. Compare the current required to radiate 10W from a Hertzian dipole of length 0.12 and a current loop of radius 0.12. b. An isotropic antenna is radiating in free space. At a distance of 100m the antenna the field measured is 1V/m. i) Find the power density at this location; ii) Determine the total power radiated by the antenna
8. (6 points) A Hertzian dipole antenna in free space has /= 0.02. The following are in far-field: (a) What value of cu...
8. (6 points) A Hertzian dipole antenna in free space has /= 0.02. The following are in far-field: (a) What value of current I is necessary to radiate a total power of 60 mW? (b) What is the ratio of the magnetic field intensity, H, at the polar angles 0 = 10 degrees and 80 degrees (c) What fraction of the total radiated power is contained in the region 0 < 60 degrees (d) What is the radiation resistance, Rrad?...
1) A Hertzian dipole antenna is a short conducting wire carrying an approximately constant current over its length...
1) A Hertzian dipole antenna is a short conducting wire carrying an approximately constant current over its length If such a dipole is placed along the z-axis with its midpoint at the origin, and if the current flowing through it is i(t) ż lo cosot, assume I to be sufficiently small so that the observation point is approximately equidistant to all points on the dipole; that is, assume RR then the corresponding magnetic field is described by: olk2 sin e...
• A 0.5 m long dipole is excited by a 10 MHz current with an amplitude...
• A 0.5 m long dipole is excited by a 10 MHz current with an amplitude of 5 A. At a distance of 1 km, what is the power density radiated by the antenna along its broadside direction? S(RO) = (15IEL RP2 sin’e W/m? Also, calculate the radiated power over 1/4 305 37/4 and 0 0 5 27. so? sinº e de = - cose + cos 38
Can someone please explain how to solve the problem below? 1. (10) A Hertzian dipole antenna...
Can
someone please explain how to solve the problem below?
1. (10) A Hertzian dipole antenna has a length of 5 mm and carries 100 MHz current of 2 Amps. Find the (a) magnitude of the E and H fields 1000 m away from the antenna at an angle = 30° and the radiated power, (b) Prad.
A radio antenna broadcasts a 1.0 MHz radio wave with 25 kW power. Assume the radiation...
A radio antenna broadcasts a 1.0 MHz radio wave with 25 kW power. Assume the radiation is emitted uniformly in all directions. 1) what is the wave's intensity 30 km from the antenna 2) what is the electric field amplitude at this distance?
9. (6 points) An antenna engineer is asked to design a X/2 dipole antenna to operate at 450 MHz. (a) Calculate the leng...
9. (6 points) An antenna engineer is asked to design a X/2 dipole antenna to operate at 450 MHz. (a) Calculate the length of the antenna if it is located in free space. (b) Calculate the magnetic field intensity, H, at a distance of 400km, polar position 0 = 30 degrees and current I = 2A (c) What value of the current I is needed for the total radiated power to equal 100 mW. (d) Determine the length of the...
FM radio station KRTH in Los Angeles broadcasts on an assigned frequency of 101 MHz with...
FM radio station KRTH in Los Angeles broadcasts on an assigned frequency of 101 MHz with a power of 50,000 W. (a) What is the wavelength of the radio waves produced by this station? (b) Estimate the average intensity of the wave at a distance of 35.3 km from the radio transmitting antenna. Assume for the purpose of this estimate that the antenna radiates equally in all directions, so that the intensity is constant over a hemisphere centered on the...
A radio antenna broadcasts a 1.0 MHz radio wave with 27 kW of power. Assume that...
A radio antenna broadcasts a 1.0 MHz radio wave with 27 kW of power. Assume that the radiation is omitted uniformly in all directions. (60 - 8.85 x 10-12 c/Nm)c- 3.00 x 10 m/s) Part A What is the wave's intensity 33 km from the antenna? Express your answer in watts per meter squared. 190 AED ? I- W/m Submit Request Answer Part B What is the electric field amplitude at this distance? Express your answer in volts per meter....
A vertical receiving dipole antenna at a position P is 15 km away from a Hertzian...
A vertical receiving dipole antenna at a position P is 15 km
away from a Hertzian dipole antenna that is also placed vertically
(see figure below). The receiving antenna measures an E field equal
to 10 mV/m.
(a) What is the value of E that the receiving antenna will
detect at a height of 3 km above P?
(b) Assuming the receiving antenna can be tilted as it is moved,
in what direction must the receiving dipole be oriented in...
Solve the following: a. Compare the current required to radiate 10W from a Hertzian dipole of length 0.12 and a current loop of radius 0.12. b. An isotropic antenna is radiating in free space. At a distance of 100m the antenna the field measured is 1V/m. i) Find the power density at this location; ii) Determine the total power radiated by the antenna
8. (6 points) A Hertzian dipole antenna in free space has /= 0.02. The following are in far-field: (a) What value of current I is necessary to radiate a total power of 60 mW? (b) What is the ratio of the magnetic field intensity, H, at the polar angles 0 = 10 degrees and 80 degrees (c) What fraction of the total radiated power is contained in the region 0 < 60 degrees (d) What is the radiation resistance, Rrad?...
1) A Hertzian dipole antenna is a short conducting wire carrying an approximately constant current over its length If such a dipole is placed along the z-axis with its midpoint at the origin, and if the current flowing through it is i(t) ż lo cosot, assume I to be sufficiently small so that the observation point is approximately equidistant to all points on the dipole; that is, assume RR then the corresponding magnetic field is described by: olk2 sin e...
• A 0.5 m long dipole is excited by a 10 MHz current with an amplitude of 5 A. At a distance of 1 km, what is the power density radiated by the antenna along its broadside direction? S(RO) = (15IEL RP2 sin’e W/m? Also, calculate the radiated power over 1/4 305 37/4 and 0 0 5 27. so? sinº e de = - cose + cos 38
Can
someone please explain how to solve the problem below?
1. (10) A Hertzian dipole antenna has a length of 5 mm and carries 100 MHz current of 2 Amps. Find the (a) magnitude of the E and H fields 1000 m away from the antenna at an angle = 30° and the radiated power, (b) Prad.
9. (6 points) An antenna engineer is asked to design a X/2 dipole antenna to operate at 450 MHz. (a) Calculate the length of the antenna if it is located in free space. (b) Calculate the magnetic field intensity, H, at a distance of 400km, polar position 0 = 30 degrees and current I = 2A (c) What value of the current I is needed for the total radiated power to equal 100 mW. (d) Determine the length of the...
A radio antenna broadcasts a 1.0 MHz radio wave with 27 kW of power. Assume that the radiation is omitted uniformly in all directions. (60 - 8.85 x 10-12 c/Nm)c- 3.00 x 10 m/s) Part A What is the wave's intensity 33 km from the antenna? Express your answer in watts per meter squared. 190 AED ? I- W/m Submit Request Answer Part B What is the electric field amplitude at this distance? Express your answer in volts per meter....
A vertical receiving dipole antenna at a position P is 15 km
away from a Hertzian dipole antenna that is also placed vertically
(see figure below). The receiving antenna measures an E field equal
to 10 mV/m.
(a) What is the value of E that the receiving antenna will
detect at a height of 3 km above P?
(b) Assuming the receiving antenna can be tilted as it is moved,
in what direction must the receiving dipole be oriented in...
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