5.8 : Calculate the antenna calibration factor for a half-wave dipole designed to operate at 1...
5.8 : Calculate the antenna calibration factor for a half-wave dipole designed to operate at 1 GHz. When this antenna is connected to a cable having 0.5 dB loss, the power available at the receiver input terminals is −10 dBm. Under these conditions, what is the measured electric field strength in dBV/m?
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5.8 : Calculate the antenna calibration factor for a half-wave
dipole designed to operate at 1...
A half-wave dipole (antenna efficiency= 80%) is driven by an input current of 0.5A (RMS). Determine...
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.
Calculate the maximum power density 1 km away from a half-wave dipole antenna that is radiating...
Calculate the maximum power density 1 km away from a half-wave dipole antenna that is radiating 100 milliwatts. Repeat the calculation for a dipole antenna that is much shorter than a wavelength. (The gain of a half-wave dipole antenna is 2.15 dBi.)
A half-wave antenna designed for 915MHz is excited with I- 100mA. Calculate the power density at...
A half-wave antenna designed for 915MHz is excited with I- 100mA. Calculate the power density at 50m from the antenna at 30° above the horizonal plane.
7) Two half-wave dipole antennas, each with an impedance of 75 Ω, are connected in parallel throu...
7) Two half-wave dipole antennas, each with an impedance of 75 Ω, are connected in parallel through a pair of 0.5-A transmission lines, and the combination is connected to a feed 0.25-2 transmission line, as shown in the Figure. 75Ω (Antenna) (a) What is the impedance of the 0.25-2 feed transmission line such that Zin will be matched to a 5042 TL? (b) If the result of (a) is connected to a 50 Ω TL that is, in turn, connected...
11.12 The amplitude of the electric field intensity of a half-wave dipole antenna at r 5 km and /6rad is 0.01 V/m in free space. If the operating frequency is 30 MHz, determine its length and the tot...
11.12 The amplitude of the electric field intensity of a half-wave dipole antenna at r 5 km and /6rad is 0.01 V/m in free space. If the operating frequency is 30 MHz, determine its length and the total power that it radiates. Alse, write express
11.12 The amplitude of the electric field intensity of a half-wave dipole antenna at r 5 km and /6rad is 0.01 V/m in free space. If the operating frequency is 30 MHz, determine its length...
A half-wave antenna designed for 915MHz is excited with I- 100mA. Calculate the power density at 50m from the antenna at 30° above the horizonal plane.
7) Two half-wave dipole antennas, each with an impedance of 75 Ω, are connected in parallel through a pair of 0.5-A transmission lines, and the combination is connected to a feed 0.25-2 transmission line, as shown in the Figure. 75Ω (Antenna) (a) What is the impedance of the 0.25-2 feed transmission line such that Zin will be matched to a 5042 TL? (b) If the result of (a) is connected to a 50 Ω TL that is, in turn, connected...
11.12 The amplitude of the electric field intensity of a half-wave dipole antenna at r 5 km and /6rad is 0.01 V/m in free space. If the operating frequency is 30 MHz, determine its length and the total power that it radiates. Alse, write express
11.12 The amplitude of the electric field intensity of a half-wave dipole antenna at r 5 km and /6rad is 0.01 V/m in free space. If the operating frequency is 30 MHz, determine its length...
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