What are some disadvantages of the end-fire array?

What are some disadvantages of the end-fire array?
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1 Answer

Answer :

Extremely low radiation resistance, confined to one frequency,  and affected by atmospheric conditions.
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Related questions

To maintain the required balance of phase relationships and critical feeding, how must the end-fire array be constructed?

Description : To maintain the required balance of phase relationships and critical feeding, how must the end-fire array be constructed?

Last Answer : Symmetrically.

Where does the major lobe in the end-fire array occur?

Description : Where does the major lobe in the end-fire array occur?

Last Answer : Along the major axis

What are the disadvantages of the parasitic array?

Description : What are the disadvantages of the parasitic array?

Last Answer : Their adjustment is critical and they do not operate over a wide frequency range.

______ is an antenna array which is highly directional at right angles to the plane of the array? A. Broadside array B. End-fire array C. Turnstile array D. Log-periodic array

Description : ______ is an antenna array which is highly directional at right angles to the plane of the array? A. Broadside array B. End-fire array C. Turnstile array D. Log-periodic array

Last Answer : A. Broadside array

Which is a non-resonant antenna? A. Rhombic antenna B. Folded dipole C. End-fire array D. Yagi-Uda antenna

Description : Which is a non-resonant antenna? A. Rhombic antenna B. Folded dipole C. End-fire array D. Yagi-Uda antenna

Last Answer : A. Rhombic antenna

If the current ratios of the two or more elements must be held 5% and the phase angle to 3° the antenna is called a A. end fire array B. critical phased array C. broadband array D. wideband array

Description : If the current ratios of the two or more elements must be held 5% and the phase angle to 3° the antenna is called a A. end fire array B. critical phased array C. broadband array D. wideband array

Last Answer : B. critical phased array

Which is the non-resonant antenna? A. Broadside Antenna B. Folded Dipole C. Rhombic antenna D. End fire array

Description : Which is the non-resonant antenna? A. Broadside Antenna B. Folded Dipole C. Rhombic antenna D. End fire array

Last Answer : C. Rhombic antenna

It consists of a number of dipoles of equal size, equally spaced along a straight line with all dipoles fed in the same phase from the same source. A. Log-periodic antenna B. Yagi antenna C. End-fire array D. Broadside array

Description : It consists of a number of dipoles of equal size, equally spaced along a straight line with all dipoles fed in the same phase from the same source. A. Log-periodic antenna B. Yagi antenna C. End-fire array D. Broadside array

Last Answer : D. Broadside array

One ofthe followingconsistsof nonresonant antennas: a.The rhombic antenna b. The folded dipole c. The end-fire array d. The broadside array

Description : One ofthe followingconsistsof nonresonant antennas: a.The rhombic antenna b. The folded dipole c. The end-fire array d. The broadside array

Last Answer : a.The rhombic antenna

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Description : What are the advantages and disadvantages of sparse matrix using array?

Last Answer : Feel Free to Answer

The broadside array consists of a flat reflector and what other elements?

Description : The broadside array consists of a flat reflector and what other elements?

Last Answer : Two or more half-wave dipoles.

The Yagi antenna is an example of what type of array?

Description : The Yagi antenna is an example of what type of array?

Last Answer : Multielement parasitic array.

What is the advantage of adding parasitic elements to a Yagi array?

Description : What is the advantage of adding parasitic elements to a Yagi array?

Last Answer : Increased gain.

The parasitic array can be rotated to receive or transmit in different directions. What is the name given to such an antenna?

Description : The parasitic array can be rotated to receive or transmit in different directions. What is the name given to such an antenna?

Last Answer : Rotary array.

hat two factors determine the directivity pattern of the parasitic array?

Description : hat two factors determine the directivity pattern of the parasitic array?

Last Answer : Length of the parasitic element (tuning) and spacing between the parasitic and driven elements.

As the spacing between elements in a broadside array increases, what is the effect on the major lobes?

Description : As the spacing between elements in a broadside array increases, what is the effect on the major lobes?

Last Answer : They sharpen.

When more than two elements are used in a broadside array, how are the elements arranged?

Description : When more than two elements are used in a broadside array, how are the elements arranged?

Last Answer : Parallel and in the same plane.

How is directivity of a collinear array affected when the number of elements is increased?

Description : How is directivity of a collinear array affected when the number of elements is increased?

Last Answer : Directivity increases.

How can the frequency range of a collinear array be increased?

Description : How can the frequency range of a collinear array be increased?

Last Answer : By increasing the lengths of the elements of the array.

Why is the number of elements used in a collinear array limited?

Description : Why is the number of elements used in a collinear array limited?

Last Answer : As more elements are added, an unbalanced condition in the system occurs which impairs efficiency.

What is the maximum number of elements ordinarily used in a collinear array?

Description : What is the maximum number of elements ordinarily used in a collinear array?

Last Answer : Four.

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Description : What are some disadvantages of operating a transmitter at or near the muf?

Last Answer : Frequent signal fading and dropouts.

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Description : What are some disadvantages of operating transmitters at or near the luf?

Last Answer : Signal-to-noise ratio is low and the probability of multipath propagation is greater.

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Last Answer : Low power-handling capability and power losses

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Last Answer : Cost and size of the inductor.

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Description : What are two disadvantages of procedure oriented languages?

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Description : List the three disadvantages of the air coaxial line

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Description : What are the two primary disadvantages of a two-wire open line?

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What is one of the major disadvantages of multilayer printed circuit boards?

Description : What is one of the major disadvantages of multilayer printed circuit boards?

Last Answer : Difficulty of repair of internal connections.

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Description : What are the disadvantages of point-to-point wiring?

Last Answer : "Rat's nest" appearance and unwanted interaction, such as capacitive and inductive effects.

What type resistor should be used to overcome the disadvantages of the carbon resistor?

Description : What type resistor should be used to overcome the disadvantages of the carbon resistor?

Last Answer : The wirewound resistor.

What are the two disadvantages of carbon-type resistors?

Description : What are the two disadvantages of carbon-type resistors?

Last Answer : 1. Change value with age. 2. Limited power capacity.

How do closed-loop capstan drive tape transports overcome the disadvantages of the open-loop drive design?

Description : How do closed-loop capstan drive tape transports overcome the disadvantages of the open-loop drive design?

Last Answer : Closed loop capstan drive transports use more than one capstan to clamp the tape in the area around the magnetic head.

There are two types of tape transport configurations, open loop capstan drive and closed-loop capstan drive. What are two major disadvantages of open-loop capstan drive tape transports?

Description : There are two types of tape transport configurations, open loop capstan drive and closed-loop capstan drive. What are two major disadvantages of open-loop capstan drive tape transports?

Last Answer : a. Only operates in one direction. b. The tape tension and head-to-tape contact can vary.

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Description : What are two disadvantages of the take-up control reeling system?

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Description : What are two disadvantages of using a recorder’s erase head to erase data recorded on a magnetic tape?

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What are the disadvantages of radiotelephone communications?

Description : What are the disadvantages of radiotelephone communications?

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Name two major disadvantages of transistors.

Description : Name two major disadvantages of transistors.

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9. (i) If \( A =\left[\begin{array}{rr}2 & -1 \\ -1 & 2\end{array}\right] \), verify \( A ^{2}-4 A +3 I = O \), where \( I =\left[\begin{array}{ll}1 & 0 \\ 0 & 1\end{array}\right] \) and \( O =\left[\begin{array}{ll}0 & 0 \\ 0 & 0\end{array}\right] . \) Hence find \( A ^{-1} \)(W. Bengal B. 2016 )

Description : 9. (i) If \( A =\left[\begin{array}{rr}2 & -1 \\ -1 & 2\end{array}\right] \), verify \( A ^{2}-4 A +3 I = O \), where \( I =\left[\begin{array}{ll}1 & 0 \\ 0 & 1\end{array}\right] \) and \( O =\left[\begin{array}{ll}0 & 0 \\ 0 & 0\end{array}\right] . \) Hence find \( A ^{-1} \)(W. Bengal B. 2016 )

Last Answer : 9. (i) If \( A =\left[\begin{array}{rr}2 & -1 \\ -1 & 2\end{array}\right] \), verify \( A ^{2}-4 ... \) Hence find \( A ^{-1} \) (W. Bengal B. 2016 )

12. \( (x+y+z) \) is a factor of :\[\left|\begin{array}{ccc}x-y-z & 2 x & 2 x \\2 y & y-z-x & 2 y \\2 z & 2 z & z-x-y\end{array}\right|\]

Description : 12. \( (x+y+z) \) is a factor of :\[\left|\begin{array}{ccc}x-y-z & 2 x & 2 x \\2 y & y-z-x & 2 y \\2 z & 2 z & z-x-y\end{array}\right|\]

Last Answer : 12. \( (x+y+z) \) is a factor of : \[ \left|\begin{array}{ccc} x-y-z & 2 x & 2 x \\ 2 y & y-z-x & 2 y \\ 2 z & 2 z & z-x-y \end{array}\right| \]

(ii) \( \left( A ^{-1}\right)^{-1}= A \).22. Verify : \( A(\operatorname{adj} \cdot A)=(\operatorname{adj} \cdot A) A=|A| I \) when(i) \( A=\left[\begin{array}{rrr}1 & -2 & 2 \\ 2 & 3 & 5 \\ -2 & 0 & 1\end{array}\right] \)

Description : (ii) \( \left( A ^{-1}\right)^{-1}= A \).22. Verify : \( A(\operatorname{adj} \cdot A)=(\operatorname{adj} \cdot A) A=|A| I \) when(i) \( A=\left[\begin{array}{rrr}1 & -2 & 2 \\ 2 & 3 & 5 \\ -2 & 0 & 1\end{array}\right] \)

Last Answer : (ii) \( \left( A ^{-1}\right)^{-1}= A \). 22. Verify : \( A(\operatorname{adj} \cdot A)=(\operatorname{ ... 3 & 5 \\ -2 & 0 & 1\end{array}\right] \)

8. If \( A=\left[\begin{array}{ll}1 & 3 \\ 4 & 1\end{array}\right] \), then find \( \left|3 A^{\prime}\right| \).

Description : 8. If \( A=\left[\begin{array}{ll}1 & 3 \\ 4 & 1\end{array}\right] \), then find \( \left|3 A^{\prime}\right| \).

Last Answer : 8. If \( A=\left[\begin{array}{ll}1 & 3 \\ 4 & 1\end{array}\right] \), then find \( \left|3 A^{\prime}\right| \).

What is mean by Extra key inserted at the end of Array?

Description : What is mean by Extra key inserted at the end of Array?

Last Answer : It means the array has a sentinel to mark the end of the array.Any elements that follow the sentinel element are deemed invalid.Sentinels are usually denoted with a special value that is not usedby ... strings arean example, where the NULL character (ASCII code 0) marks the endof a character array.

What is mean by Extra key inserted at the end of Array?

Description : What is mean by Extra key inserted at the end of Array?

Last Answer : It means the array has a sentinel to mark the end of the array.Any elements that follow the sentinel element are deemed invalid.Sentinels are usually denoted with a special value that is not usedby ... strings arean example, where the NULL character (ASCII code 0) marks the endof a character array.

A system wherein items are added from one and removed from the other end. a) Stack b) Queue c) Linked List d) Array

Description : A system wherein items are added from one and removed from the other end. a) Stack b) Queue c) Linked List d) Array

Last Answer : Answer: b Explanation: In a queue, the items are inserted from the rear end and deleted from the front end

Are there any disadvantages of fire alarms?

Description : Are there any disadvantages of fire alarms?

Last Answer : Yes, fire alarm has few disadvantages: It is costly to install fire alarm. One has to pay a monitoring company, who watches the activation of alarm. Maintenance is also needed. You have to arrange someone for its maintenance. It needs time and money to keep check the working of fire alarms.

What width is the pulse radiated by fire-control tracking radar?

Description : What width is the pulse radiated by fire-control tracking radar?

Last Answer : Very narrow.

Fire-control tracking radar most often radiates what type of beam?

Description : Fire-control tracking radar most often radiates what type of beam?

Last Answer : A narrow circular beam.