Show that the directivity of isotropic antenna is 1.
Q: If the directivity of an antenna is 25 dB at 2.5 GHz, then what will be the effective aperture of…
A: The given values of directivity and frequency are:
Q: If the directivity of an antenna is 25.5 dB, then what will be the effective aperture of antenna if…
A: The given values of directivity and frequency are:
Q: 2. At a certain time, the MUF for transmissions at an angle of incidence of 750 is 17 MHz. what the…
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Q: Antenna dimension needed for transmitting signals is at least /4. Select one: True False
A:
Q: Example: Design a log-periodic dipole antenna to cover all the VHF TV channels (starting with 54 MHz…
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Q: 2.5. How much microwave power is received by a 3-m² antenna if the elec- tric field at the antenna…
A: Given, The electric field at the antenna, E=10-5 Vm The magnetic field at the antenna, H=2.6×10-8 Am…
Q: Find out the available power density at 1 km away from an isotropic antenna which is transmitting…
A: The available power density at r distance away from a transmitting isotropic antenna can be…
Q: Determine the height of an antenna that must be able to reach antennas at 1.5 m height up to 80 km…
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Q: An antenna has a gain that is 13 times better than an isotropic antenna. Calculate the gain of this…
A: Antenna Gain (G): It is defined as the ratio of transmit/receive power in a particular direction, to…
Q: 4. The extra term for additional attenuation due to urban clutter near the receiving antenna is…
A: The solution along with the explanation is provided in the following section.
Q: 4-determine the power at carrier of the antenna resistance one ohm (1 2) 5- Write the AM equation…
A: We need to calculate power at carrier frequency and expression for modulated signal
Q: а. A helical antenna is used to operate in the axial mode with a total number of 15 turn. For this…
A: Note: We are authorized to answer one question at a time since you have not mentioned which question…
Q: In a 3 element antenna array, the distance between the antenna elements is quarter of a wavelength.…
A: For array antenna configuration, the successive phase difference between the antenna elements can be…
Q: Calculate the maximum directivity of an antenna with a radiation intensity
A: Reflection-When light wave passes through interface diagonally between two media if it gets…
Q: For an antenna having a directivity of 40 dB, what will be the effective aperture if the frequency…
A: The directivity (D) of an antenna depends on the effective aperture (Ae) of the antenna. The…
Q: An antenna has a gain that is 19 times better than an isotropic antenna. Calculate the gain of this…
A: Given information: The gain of the antenna under test is 19 time more than the gain of an isotropic…
Q: The given a pyramidal horn antenna with aperture dimentions of 9 x 8 cm and operating at a…
A: The directivity (D) of a pyramidal horn antenna can be expressed as
Q: Q1) Very low signal strength in antenna. * O Antenna patterns O Major lobes O Minor lobes O Null
A: Em wave Pattern of radiation is called antenna pattern Major lobe is the portion of this pattern…
Q: The gain of a parabolic reflector antenna is 1000 when the frequency is 300 MHz. If the mouth of the…
A: The gain of a parabolic reflector antenna with a circular aperture mouth can be expressed as…
Q: A horn antenna is operated 8.2 to 12. 4 GHz. The aperture of the antenna is (L x W ) 32 x 42 mm.…
A: Explanation: a)
Q: The approximate distance to the visible horizon is determined by * Los antenna height Frequency…
A: According to the question, we need to find the parameter by which approximate distance to the…
Q: 2.16. The normalized radiation intensity of an antenna is rotationally symmetric in , and it is…
A: Given : Brief description: In an antenna the directivity is depends upon the maximum intensity of…
Q: There is no radial component in the . Fresnel field region Far field region near field region if the…
A: We need to select correct option for given statement .
Q: The maximum radar cross section for a resonant half-wave length dipole is 0.85A2. the frequency is…
A: Given, Frequency, f=10 GHz Distance, R=1000 m Gain of the transmitter, Gt=20 dB Gain of the…
Q: An antenna has a radiation resistance of 80 ohms, effective (ohmic) resistance of 10 ohms, directive…
A: As per company guidelines, we are supposed to answer the first 3 subparts of the question. Kindly…
Q: Consider a 90° corner reflector antenna with a half-wave dipole as the driving element and an…
A: The angle of the corner reflector antenna (θ) is given as 90o. Evaluating the area:
Q: A lossless resonant dipole antenna, has the pattern of the antenna is given approximately by U=Bo…
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Q: If an antenna has a beam solid angle of 0.05 steradian, then what will be the half power beam width…
A: In antenna terminology, half power beamwidth is defined as the angular separation between the two…
Q: The gain of a paraboloid reflector antenna with circular aperture mouth is 1000 when the frequency…
A: Given information: The gain of the antenna system G=1000 The frequency of operation f=300 MHz From…
Q: What is the required bandwidth according to the Carson's rule, when a 100 MHz carrier is modulated…
A: Given information: The frequency of the carrier signal is fc=100 MHz. The modulating frequency is…
Q: 4/ Calculate the minimum value of the transmitted power of a pulsed radar signal to detect a target…
A: It is given that: Cross-sectional area=σ=10 m2Distance=D=120 km=120×103 mFrequency=ν=35 GHz=35×109…
Q: An antenna has a directivity of 44 dB. What will be the beam solid angle of the antenna?
A: If the radiation intensity of an antenna is assumed to be constant, then all the power coming out of…
Q: Calculate the gain of a lossless antenna with circular aperture of diameter 3 meters at a frequency…
A: The solution is given below
Q: Consider a lossless antenna with a directive gain of +6 dB. If 1 mW of power is fed to it the total…
A: Solution Lossless antenna with directive gain of +6dB = 100.6 =4 (In linear) Input power to antenna…
Q: if the maximum dimension of an antenna is 0.15 m and the frequency is 1 GHz the distance 0.5 m…
A: Given values are - D=0.15mf=1GHz Given distance is 0.5(m).
Q: determine the power at carrier of the antenna resistance one ohm (1 2) Write the AM equation with…
A: We need to calculate power at carrier frequency and modulated signal expression
Q: Calculate the gain of a lossless antenna with circular aperture of diameter 3 meters at a frequency…
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Q: 6. If the distance between a transmitting station and receiving station is 1 Km and if the antennas…
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Q: If you check the voltage at one-half wavelength from the end of an RF transmission line, what…
A: RF transmission : RF(Radio Frequency) is defined as a frequency range with in which radio waves may…
Q: 2.4) For a monopole antenna operating at F2 MHz, calculate the length (1) of the antenna, and also…
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Q: Calculate the gain of a lossless antenna with circular aperture of diameter 3 meters at a frequency…
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Q: Determine the efficiency of a dipole antenna that has a radiation resistance of 67 ohms and has a…
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Q: A dish antenna has a gain of 108 at 300 MHz. What will be the diameter of the dish antenna?
A: Diameter (D) of a dish antenna depends on the gain of the antenna and the wavelength of radiation.…
Q: Calculate the gain of a lossless antenna with circular aperture of diameter 3 meters at a frequency…
A: We need to find out Gain for given antenna
Q: If the electric field intensity of an isotropic antenna as down formula, what is the overall…
A: We need to find out the radiation power for given electric field .
Q: If the FNBW of a parabolic reflector antenna is 15o at 1.5 GHz then estimate the diameter of the…
A: For a parabolic reflector type antenna, the expression of First Null Beamwidth (FNBW) in degree can…
Q: For the 50-ft tower, what is the distance if the receiving antenna is at ground level? What if it is…
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Q: Assume that the antennas in Problem 2.3 are dish antennas such that A = . If the beamwidth factor…
A: The region where the majority of the power is emitted, which is the peak power, is known as the beam…
Q: If the directivity of an antenna is 12.5 dB when the antenna is transmitting at 5 nm wavelength,…
A: The directivity (D) of an antenna can be expressed as
Q: An antenna has a field pattern given by E(0) = 2sin(0.750) for 0'sos 90. Find a) The half-power…
A: Given Eθ=2sin0.75θ The half-power level occurs at those angles θ for which Eθ=12…
Show that the directivity of isotropic antenna is 1.
Step by step
Solved in 4 steps with 3 images
- Calculate the directivity of an isotropic antenna.Calculate the beamwidth in degrees of a parabolic antenna with a diameter of 3 meters, an efficiency of 60% and operates at a frequency of 4GHzCalculate the power gain of a horn antenna of square aperture with the aperture area of 100 times the square of wavelength.
- A parabolic antenna having a circular aperture mouth has a power gain of 1000 for wavelength of 10 cm. What will be the diameter of the aperture?Find the far field distance for an antenna with maximum dimension of 2 m and operating frequency of 800 MHz.An antenna is mounted on a 2 meter rod that is held out of level so that the antenna is offset by 0.4' from the bottom of the rod. What is the angular error of the rod? What is the vertical error of the measurement?
- If the directivity of an antenna is 12.5 dB when the antenna is transmitting at 5 nm wavelength, then what will be the effective aperture of the antenna?In a 3 element antenna array, the distance between the antenna elements is quarter of a wavelength. What will be the phase difference between the elements?If the directivity of an antenna is 25 dB at 2.5 GHz, then what will be the effective aperture of the antenna?
- An antenna has a directivity of 44 dB. What will be the beam solid angle of the antenna?For a horn antenna, the radiation resistance is 2500 ohms and the loss resistance is 100 ohms. Estimate the radiation efficiency of the antenna?If the directivity of an antenna is 25.5 dB, then what will be the effective aperture of antenna if the frequency of transmission of 2 GHz?