Why the current distribution in the λ/2 dipole antenna is sinusoidal?

Q: B: Drive the radiation intensity equation of an isotropic antenna.

A: For an isotropic radiator, the radiation is equal in all directions. The average power density is…

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 a receiver could use an ideal isotropic antenna, it could receive -40 dBm. How much could be…

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Q: c) An array antenna consists of six vertical dipoles with their centers at half wavelength spacings…

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Q: An antenna which radiates in all directions equally with spherical radiation pattern Select one: a)…

A: Isotropic antenna: It is also called as Omnidirectional antenna. It is a hypothetical or…

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: a) Determine the magnitudes of the electric and magnetic fields of a half-wave dipole operated at a…

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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: Question A half-wave dipole antenna has Rjoss = 10. What is the antenna gain? | 1.48 )4.18 dB | 1.62…

A: solve prob,,,,

Q: electrically large loops antenna are those O a. circumference is about a free-space wavelength (C…

A: A message signal has to be transferred from the sender to the receiver. The message signal has to be…

Q: The total dipole moment may reach a significant magnitude as a result of random .orientation True…

A: In random orientation the total dipole moment is the algebraic sum of all the dipole moments aligned…

Q: 3. Define an Antenna and show how a dipole antenna is formed with its current distribution?

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Q: For a single wire antenna, explain (in your own wc radiation from this antenna.

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Q: B: Drive the radiation intensity equation of an isotropic antenna.

A: Isotropic antenna properties No pre-specified direction of the radiated wave It can radiate in any…

Q: Drive and find radiation resistance of (0.02 λ) dipole.

A: The radial resistance of a dipole is the resistance of the dipole in the radial direction, which is…

Q: Q3: For a dipole antenna of 3m long, Io= 2A, determine power radiation, radiation resistance,…

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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: 4) Why the current distribution in the /2 dipole antenna is sinusoidal?

A: A message signal is transferred from the sender to the receiver end. The signal is transmitted…

Q: If a parabolic antenna is equipped with a 10 m diameter dish, then what will be the first null…

A: The angular separation between the two nulls on either side of the main lobe of the antenna's…

Q: Question 19 While some ideal antennas are described as omnidirectional or isotropic, real antennas…

A: Ideal antenna has maximum radiation in all the directions. This is called isotropic radiator which…

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: Q1/Explain why there's a difference between the impedance of a folded dipole and a A/2 dipole

A: Antenna arrays are a collection of various antennas. This results in the increase of amount of…

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: What will be the power gain of a parabolic antenna with 10 m diameter dish and a feed of 10 GHz?

A: The expression of power gain G­p for a parabolic antenna having a dish diameter of D is given as

Q: Q2. True or False Questions: 1. In the normal mode, the radiation is perpendicular to the axis of…

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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. A horizontal infinitesimal electric dipole of constant current lo is placed symmetrically about…

A: You have asked multiple independent questions. We are authorized to answer one question at a time.…

Q: An electrically short dipole antenna is excited by sinusoidal current distribution. If the antenna…

A: Radiation resistance is a fictitious resistance. When an antenna radiates, the total power radiated…

Q: Two infinite decimally small dipole antennas are separated by a distance d=\/2 and are fed with…

A: According to the question, The separation between two antennas are d=λ2; feeding currents are equal…

Q: of 1080 MHz. The antenna is connected by coaxial cable with inductance, L-02 An antenna with…

A: Introduction: Antenna: An antenna is a device used to transmit or receive signals, usually in the…

Q: 7. What may occur when a directional antenna is operated at different frequencies within the band…

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Q: For an antenna with radiation resistance equal to 50 Ω and efficiency of 80%, what is the loss…

A: Given that  Rr=10 ohmη=80% Although formula of antenna efficiency is given by…

Antenna Characteristics

The antenna is an important concept in the domain of electronics and communication engineering. An antenna forms an integral part of many commonly used devices such as wireless modems, routers, game controllers, mobile phones, bluetooth devices, and so on. In simple terms, any wireless communication makes use of antennas to serve the purpose. An antenna, also known by the term 'arial', is an electrical device that converts electrical signals into electromagnetic waves or electromagnetic waves into electrical signals. An antenna contains a transmission line usually made up of co-axial cable, it then receives the signals and converts them into electromagnetic waves, which are then transmitted via space into their required destination. A communication system essentially makes use of two antennas, a transmission antenna, which converts electrical signals into electromagnetic waves, and a receiving antenna, which receives the electromagnetic waves and converts them back into electrical signals.