The directivity of an antenna is 12 dB. What will be the beam solid angle of the antenna? Express the answer in steradian
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: The most efficient length for a linear antenna is λ/2. Why?
A: The linear antennas are made up of thin metallic conductors and have lengths straight throughout the…
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: What circuit Q is required to give a bandwidth of 56 MHz at a frequency of 44 GHz? Round the final…
A: Q factor given by Q= resonance frequency/ bandwidth Here given frequency is 44Ghz Bandwidth =…
Q: 2. At a certain time, the MUF for transmissions at an angle of incidence of 750 is 17 MHz. what the…
A:
Q: The realtionship between the lengthof the dipole and the beamwidth a. As the length of the antenna…
A: The relationship between the length of the dipole and the beamwidth?
Q: An antenna has a loss resistance of 32 ohms, power gain of 30 and directivity equal to 42. What will…
A: Radiation efficiency of an antenna is defined as the ratio of power gain of the antenna to the…
Q: Define: frequency-independent antenna
A:
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: The radiation resistance of an antenna is 55 Ohm and the loss resistance is 10 Ohm. Determine the…
A: Radiation Resistance (Rr)= 55 ohmsLoss Resistance (Rl)= 10…
Q: frequency (MUF) for transmission at an angle of incidence of 75° is 20MHz. A) What is the critical…
A: In this question we will find critical frequency and optimum working frequency of transmission....
Q: Power radiated from an antenna per unit solid angle is called radiation intensity. a. TRUE b. FALSE
A: The above statement is absolutely correct.
Q: Compare between Hertz antennas and Marconi antennas.
A: The explanation is as follows.
Q: As an application engineer, you found three-unit directional antennas operate at 1.575 GHz with…
A: Given: The three-unit directional antennas operate at 1.575 GHz with unknown gain. The first antenna…
Q: Calculate the number of elements, length of each element and spacing between the elements of log…
A: Given: The log periodic antenna has the following parameters: f1=70 MHzf2=320 MHzσ=0.132τ=0.762 To…
Q: For a single wire antenna, explain (in your own wc radiation from this antenna.
A:
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 transmitter supplies 8 kW to the antenna when unmodulated. (a) What is the total power radiated…
A: Given: Unmodulated transmitter power is given as PC=8 kW Required: Total power radiated when…
Q: 5. When a power Pt is transmitted by an antenna, amount of energy incident on the target is given by…
A: The correct option along with the explanation is provided in the following section.
Q: A power gain test of the reference antenna and the test antenna gave the following test results:…
A: The power gain Gp of an antenna depends on the input power to the reference antenna and the output…
Q: An isotropic antenna is transmitting 25 W of power. What will be the power density at 20m away from…
A: An isotropic antenna is an omnidirectional antenna. Therefore, the radiation is evenly spread out in…
Q: | The radiation resistance of an antenna is 80 2 and loss-resistance is 10 Q. What is :ts…
A: Given: RR=80 ΩRL=10 ΩG=20
Q: An isotropic transmitting antenna is transmitting 10 W of power. If the receiving antenna is located…
A: According to Friis transmission formula, the power received (Pr) by the receiving antenna located at…
Q: A vertically earthed antenna of length half wave length is transmitting a video signal. What will be…
A: The vertical earthed antenna is a type of vertical dipole in which one side of the dipole is the…
Q: What will be the wavelength of a 99 GHz frequency used for radio transmission? Round the solution to…
A: The radio wave is an electromagnetic wave. Since it is an electromagnetic wave, the wavelength and…
Q: Calculate the directivity of an isotropic antenna.
A: An isotropic antenna radiates equally in all possible directions. Directivity is a measure of how…
Q: Magnitude of dipole moment is given by q/d O qd d/q None
A: A dipole in general refers to something that exist with two opposite poles or charges . Any two…
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: This is not the actual purpose of an antenna in a radar; Measure the pointing direction…
A: The radar antenna is used to transmit the pulses of the radio waves that bounces off any of the…
Q: compute for the center frequencey and wavelength in a dipole antenna with 1 reflector and 1 director…
A: An antenna is a communication device that transmits and receives signals to represent data. In the…
Q: What is the reflection efficiency for an antenna with an input impedance Za=73 – Ohms attached to a…
A:
Q: The directivity if an antenna is 1.5. what will be the value of the beam solid angle of the antenna?
A: Directivity of an antenna is a measure of how efficiently an antenna can radiate in a specified…
Q: Directivity of antenna radiating at 15 MHz is 120. What will be effective aperture of the antenna?
A: Given information: The frequency of operation is f=15 MHz The directivity of the antenna is D=120
Q: Q1: Answer the following sentences with (True) or (False) then correct the false sentences: 1- When…
A: We need to tell about whether the given statement is true or false.
Q: antenna is 100mA. 1. What is the magnitude of E at a distance of 100m in the broadside plane for…
A: The General Expression of Electric field and Magnetic field for a Half-Wavelength Dipole Antenna is…
Q: A transmitting dipole antenna has an effective height of 61.4 m and the wavelength of radiation is…
A: Given information: Effective height of the dipole antenna is he=61.4 m. The wavelength of radiation…
Q: 5. When a power Pt is transmitted by an antenna, amount of energy incident on the target is given by…
A: The correct option along with the explanation is provided in the following section.
Q: An antenna has a loss resistance of 10 ohm. The gain and directivity of the antenna is 20 and 22…
A: Given information: The loss resistance of the antenna is RL=10 Ω The gain of the antenna is G=20 The…
Q: Radiation resistance of an antenna is 80 ohm and the loss resistance is 10 ohm. If the gain of the…
A: The directivity (D) of an antenna can be obtained from the gain (G) of the antenna using the…
Q: An isotropic antenna is radiating evenly in the r–direction in free space. The total electric field…
A: Write the expression for the total radiated power,
Q: A vertical grounded antenna can radiate only at 10 MHz frequency. If the radiation resistance of the…
A: The radiation resistance of a vertically grounded antenna can be expressed by the following…
Q: 7. What may occur when a directional antenna is operated at different frequencies within the band…
A:
Q: Differentiate between effective isotropic radiated power (EIRP) and effective radiated power (ERP)…
A: Effective isotropic radiated power (EIRP) is the total power radiated by a hypothetical isotropic…
Q: Magnitude of dipole moment is given by q/d
A: 5) Magnitude of dipole moment p is defined as Magnitude of the charge q multiplied by the distance d…
Q: 4. The power density radiated by an isotropic antenna is given by the relation: a) P;/4tR? b) P/4R?…
A: An isotropic radiator is a special type of antenna which radiates in all possible directions…
Q: If the solid angle subtended by the main beam of an antenna is 0.5 steradian then what will be the…
A: If the radiation intensity of an antenna is assumed to be constant, then all the power coming out of…
Q: For the 50-ft tower, what is the distance if the receiving antenna is at ground level? What if it is…
A:
Q: From your practical knowledge in the antenna Lab, state the steps of drawing the antenna field…
A: According to the question, from the practical knowledge in the antenna Lab, state the steps of…
Q: The normalised power pattern of an antenna is given as Pn=cos2x where 0<=x<=90o. Find out the…
A: At the half-power point, the value of the normalized power pattern becomes 0.5. This can be…
The directivity of an antenna is 12 dB. What will be the beam solid angle of the antenna? Express the answer in steradian.
Step by step
Solved in 3 steps with 4 images
- The gain of a parabolic reflector antenna is 1000 when the frequency is 300 MHz. If the mouth of the reflector aperture is circular, then what will be the aperture of the mouth?Radiation resistance of an antenna is 80 ohm and the loss resistance is 10 ohm. If the gain of the antenna is 20, then what will be the directivity of the antenna?The directivity of a half wave antenna is 1.642. what will be the effective apeeturenof the antenna if the wavelength is 0.2 m?
- If the solid angle subtended by the main beam of an antenna is 0.5 steradian then what will be the directivity of the antenna?The radiation resistance of an antenna is 800 ohms and the loss resistance is 100 ohms. What will be it's directivity if the power gain of the antenna is 20?If an antenna has a beam solid angle of 0.05 steradian, then what will be the half power beam width of the antenna?
- What does the TE mean? Why does one have a 10 as subscript and the other mn? What is a broad and short dimension and a rectangular waveguide?An array of two similar antennas, each antenna has the field pattern E. E'.sin . Draw the generated field pattern of this array if the feeding current for both antennas has the same amplitude but opposite phase.The radiation resistance and the loss resistance of a pyramidal horn antenna are 50.55 ohm and 20.23 ohm respectively. What will be the radiation efficiency of the antenna?