(a) Given,
f = 150 MHz = 150 x 106 Hz
Wavelength,
As this is a half-wave dipole. Thus,
Radiation efficiency of the antenna is-
99.3 %
(b) A half-wave dipole has a directivity of 1.64.
The antenna gain is-
(c) Given,
Prad = 80W
Antenna Current is-
Power supplied by the generator is-
MHz. The dipole is made of copper wire with a radius of 1 mm (a) Determine the radiation efficiency of the antenna; (b)...
A half-wave dipole (antenna efficiency= 80%) is driven by an input current of 0.5A (RMS). Determine the maximum radiation power density and the corresponding electric field strength at a point 200 m away from antenna.
Please show all steps 2.60. A 1-m long dipole antenna is driven by a 150 MHz source having a source resistance of 50 ohms and a voltage of 100 V. If the ohmic resistance of the antennas is given by RL 0.625 ohms, find the: (a) Current going into the antenna (/ant) (b) Power dissipated by the antenna (c) Power radiated by the antenna (d) Radiation efficiency of the antenna
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)A solenoid is made of 3000 turns of copper wire. The length of the coil is 35.0cm. It is connected to a power supply which provides a current of 5.00A. What is the magnitude of the B-field created inside the solenoid. B) The solenoid coil is twisted to make a toroid of radius 10.0cm. Determine the magnetic field magnitude inside the coils of the toroid.
Question 2 14 pts You have 100 m of fine copper wire with a radius of 0.5 mm. Having only a 12 V power supply that can be treated as ideal, a pencil, and a bag of long nails made from 99.8% pure iron (relative magnetic permeability of 200) you need to make a magnet that would produce a strong magnetic field. A. (2 points) What is the resistance of the 100 m of the given copper wire? Assume the...
Given a generator with 566 circular loops of radius 0.11 meters made of 2.1 mm diameter copper wire, with an applied magnetic field of 0.33 T that spins at 847 rev/s. a) What is the Vrms produced? b) If the generator supplies an average of 46 MW to a town 37 km away through 2 wires with a linear resistance of 0.28 Ω/km, what is the percentage of power loss in the transmitting wires if the power is not transformed?...
a.) A 33.9-m length of copper wire at 20.0°C has a radius of 0.31 mm. If a potential difference of 7.00 V is applied across the length of the wire, determine the current in the wire. b.) If the wire is heated to 40.0°C while the 7.00-V potential difference is maintained, what is the resulting current in the wire?
(a) A 35.3-m length of copper wire at 20.0°C has a radius of 0.31 mm. If a potential difference of 7.0 V is applied across the length of the wire, determine the current in the wire. (Use the values in this table.) 1.48 A (b) If the wire is heated to 40.0°C while the 7.0-V potential difference is maintained, what is the resulting current in the wire?
1. A number 12 copper wire has a diameter of 2.053 mm. Calculate the resistance of a 37.0 m long piece of such wire. (Use 1.72×10-8 Ωm for the resistivity of copper.) Use the formula for resistance remembering that the diameter is specified rather than the radius. 2. For safety, the National Electrical Code limits the allowable amount of current which such a wire may carry. When used in indoor wiring, the limit is 20.0 A for rubber insulated wire...
A number 16 copper wire has a diameter of 1.291 mm. Calculate the resistance of a 43.0 m long piece of such wire. (Use 1.72x 10-8 sm for the resistivity of copper.) 5.650x10-1 Ohm You are correct. Previous Tries For safety, the National Electrical Code limits the allowable amount of current which such a wire may carry. When used in indoor wiring, the limit is 6.0 A for rubber insulated wire of that size. How much power would be dissipated...