Calculate the radiation resistance of a short dipole (with a triangular current distribution) of length 0.3 m operating at 100 MHz. If the total resistance of the antenna is 2.2 Ω, calculate the maximum effective area and the radiation efficiency of the dipole

Q: A resonant half-wavelength dipole is made out of iron (o=1×107 S/m) wire. Determine the…

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Q: Q1: The radiation intensity pattern expression for an antenna is given by: F(0) = %3D 0 elsewhere…

A: This is a basic problem of antenna characteristics. The formula and calculation is shown in the next

Q: e power radiated fr

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Q: Calculate the radiation resistance of an element whose overall length is one-tenth of wavelength

A: The radiation resistance of a current element can be expressed as Rrad=80π2lλ2 Ω--->(1) where l…

Q: An antenna with maximum dimension of 50 cm radiates an RF signal with an operating frequency of 1080…

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Q: A half wavelength dipole antenna lies on the z -axis. The input current to the antenna is 0.25 (A)…

A: A halfwave dipole antenna lies on the z-axis. The input current to the antenna is 0.25 A. a) We need…

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

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Q: An antenna with a small radiation resistance has which of the following properties: Select one: O a.…

A: The solution is given below

Q: The Ohmic loss resistance of the dipole, ta effective cross-sectional area of the dipole…

A: (a) Given quantities are as follows : l=λ10a=λ40Rrad=80π2lλ2σ=5.7×107Sm-1f=5GHz In order to…

Q: 6. Design a rectangular patch antenna so that it will resonate at "(X/10)" GHz. The substrate is…

A: 6. It is given that: h=0.75 mm=0.75×10-3 mεr=3fr=X10 GHz=8910=8.9 GHz

Q: 1. A 4-element dipole array has element spacing of 2/2. The elements are excited by sources with the…

A: A 4-element dipole antenna array:

Q: A 1.5m dipole transmitting antenna located with its center at the origin and radiates RF signal with…

A: Transmitting power: It is the movement of energy from one place to another place in antenna. If…

Q: Explain why λ/2 dipole antenna gives optimum radiation pattern.. Provide your answer Handwritten…

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Q: power radiated by the antenna.

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Q: If the electric field at a far zone point 15 km away from an antenna is 25mV/m, then what is value…

A: Amplitude of the electric field at a distance r away from the transmitting antenna can be expressed…

Q: A dipole with charges of ±q, where q = 3.9e-05, and a separation d = 0.0001 has what magnitude field…

A: Referring to the given points, drawing the general diagram showing the dipole:

Q: radiation pressure

A: Isotropic radiation- The radiation from a point source which is uniformly radiating in every…

Q: An electric field strength of 10 uV/m is to be measured at an observation point 0 = 1/2, 500 km from…

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Q: A 2 m long center-fed dipole antenna operates in the AM broadcast band at 1 MHz. The dipole is made…

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Q: Evaluate the power radiated by /10 dipole in free space if it carries a uniform current of 150 coswt…

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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: Q) A radiation pattern of the antenna with U=8Sin20 Sinp w/sr, where 0s 0 s n & Os p < n. If current…

A: Brief description : For the given radiation pattern we need to calculate radiation resistance,…

Q: 1. Given a waveguide with a guiding axis, how do you identify the TEM, TE and TM modes of…

A: It is mentioned that if a waveguide with a guiding axis is provided, then how the TEM, TE and TM…

Q: Two half wave dipole antenna are operated at 100 MHz and separated by 1 kım, If 100 W is transmitted…

A: Dipole antenna is one of the simplest Antenna. It consist conductor of  equal length. In Antenna…

Q: A parabolic antenna has an opening of 15 m and receives in the normal direction a linearly polarized…

A: Given,Diameter of antenna, d=15mAmplitude, E=4×10-7 V/m

Q: Calculate the incidence angle for the beam radiation on horizontal surface at 9:00 am (solar time)…

A: The Given Data's are: Solar time(ST) =9:00 am, Date - 1 Dec, Location altitude(ϕ)=28∘N, Hour angle…

Q: A helical antenna has a mean diameter of 3m and it operates at 5GHz, if its gain is 30dbi. What is…

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Q: If the critical frequency of ionosphere for vertical incidence is 20 MHz, then estimate the value of…

A: Given data: The value of the critical frequency of the ionosphere for vertical incidence is fc=20…

Q: The radiation resistance of a dipole antenna is 377 ohms. Express its effective height as a function…

A: Given information: The radiation resistance of the dipole antenna is Rrad=377 Ω

Q: # 2) A 12-element array of vertical center-fed half-wavelength dipoles is shown below. The dipoles…

A: GIVEN λ = Wavelength  d=spacing between adjacent elements  =&gt; d=λ/2 (given) and d=3λ [spacing…

Q: A 5 mm long thin dipole operates at 800 MHz. Assume that dipole is orientated along the z-axis, and…

A: In this question electric dipole is given.. calculate the real power radiated and radiation…

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: A thin, straight dipole antenna operates at 30 MHz in free space. The length and radius of the…

A: Given data : The free-space wavelength at f=30MHz conductivity of dipole σ=3.7×107S/m Length of 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: 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: 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…

Q: If a half wave dipole antenna has a peak antenna current of 10 A, then estimate the power radiated…

A: The power radiated by a dipole antenna can be expressed as

Q: A rectangular waveguide with a horizontal length a = 3 cm and a vertical length b = 2 cm is filled…

A: According to question:

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.