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

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

1 Answer

Answer :

Increased gain.
by

Related questions

The number of parasitic elements in yagi antenna is

Last Answer : The number of parasitic elements in yagi antenna is 2.

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.

All elements in a beam _____ antennas are in line A. collinear B. yagi C. broadside array D. log-periodic

Description : All elements in a beam _____ antennas are in line A. collinear B. yagi C. broadside array D. log-periodic

Last Answer : A. collinear

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.

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.

In order to get maximum radiation to all surrounding points in the horizontal plane, the antenna used is a A. vertical loop B. vertical quarter-wavelength rod C. array which includes parasitic elements D. a horizontal Hertz dipole

Description : In order to get maximum radiation to all surrounding points in the horizontal plane, the antenna used is a A. vertical loop B. vertical quarter-wavelength rod C. array which includes parasitic elements D. a horizontal Hertz dipole

Last Answer : B. vertical quarter-wavelength rod

The reflector and director of an antenna array are considered as A. Parasitic elements B. Transcendental elements C. Feed-points D. Driven elements

Description : The reflector and director of an antenna array are considered as A. Parasitic elements B. Transcendental elements C. Feed-points D. Driven elements

Last Answer : A. Parasitic elements

Whichoneofthe followingterms doesnot applyto theYagi-Uda array? a. Good bandwidth b. Parasitic elements c. Folded dipole d.Highgain

Description : Whichoneofthe followingterms doesnot applyto theYagi-Uda array? a. Good bandwidth b. Parasitic elements c. Folded dipole d.Highgain

Last Answer : d.Highgain

The effect of adding parasitic elements of a Hertz dipole is to A. make the antenna more omnidirectional B. reduce its resonant frequency C. increase the antenna’s power gain D. All of these

Description : The effect of adding parasitic elements of a Hertz dipole is to A. make the antenna more omnidirectional B. reduce its resonant frequency C. increase the antenna’s power gain D. All of these

Last Answer : C. increase the antenna’s power gain

Good grounding is important for A. horizontal antennas B. broadside array antennas C. vertical antennas D. Yagi-Uda antennas

Description : Good grounding is important for A. horizontal antennas B. broadside array antennas C. vertical antennas D. Yagi-Uda antennas

Last Answer : C. vertical antennas

A theoretical reference antenna that provides a comparison for antenna measurements. A. Marconi antenna B. Isotropic radiator C. Yagi-Uda array D. Whip antenna

Description : A theoretical reference antenna that provides a comparison for antenna measurements. A. Marconi antenna B. Isotropic radiator C. Yagi-Uda array D. Whip antenna

Last Answer : B. Isotropic radiator

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

Receives and collects satellite signals form a broadcast satellite. A. LNB B. Yagi-Uda array C. Satellite receiver D. Satellite disk

Description : Receives and collects satellite signals form a broadcast satellite. A. LNB B. Yagi-Uda array C. Satellite receiver D. Satellite disk

Last Answer : D. Satellite disk

A type of array antenna which consists of one half-wave driven dipole, one reflector and one director A. Hertzian dipole B. Yagi-uda C. Broadside collinear D. Log periodic dipole array

Description : A type of array antenna which consists of one half-wave driven dipole, one reflector and one director A. Hertzian dipole B. Yagi-uda C. Broadside collinear D. Log periodic dipole array

Last Answer : B. Yagi-uda

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

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.

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.

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.

Refers to a type of beam antenna which uses two or more straight elements arranged in line with each other. A. Dipole antenna B. Yagi antenna C. Whip antenna D. Rhombic antenna

Description : Refers to a type of beam antenna which uses two or more straight elements arranged in line with each other. A. Dipole antenna B. Yagi antenna C. Whip antenna D. Rhombic antenna

Last Answer : B. Yagi antenna

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 some disadvantages of the end-fire array?

Description : What are some disadvantages of the end-fire array?

Last Answer : Extremely low radiation resistance, confined to one frequency, and affected by atmospheric conditions.

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.

What are three advantages of adding an ac bias voltage to the input signal instead of adding a fixed dc bias voltage?

Description : What are three advantages of adding an ac bias voltage to the input signal instead of adding a fixed dc bias voltage?

Last Answer : a. Reproduces a stronger output signal. b. Greatly improves the SNR. c. Greatly reduces the natural tape hiss.

Why does adding dc vice ac bias voltage to the input signal result in a poor signal-to-noise ratio (SNR)?

Description : Why does adding dc vice ac bias voltage to the input signal result in a poor signal-to-noise ratio (SNR)?

Last Answer : With dc bias, the SNR is poor because only a small portion of the magnetism curve is straight enough to use, thus the output signal is weak compared with the natural tape hiss.

Can a battery be recharged by adding more electrolytes?

Description : Can a battery be recharged by adding more electrolytes?

Last Answer : No, a current must be passed through the battery.

Python: How to get the indices of several elements in a list or numpy array at once? -Web-Development

Description : Python: How to get the indices of several elements in a list or numpy array at once? -Web-Development

Last Answer : answer:

Python : How to find the indices of elements in a sublist in a list or numpy array -Web-Development

Description : Python : How to find the indices of elements in a sublist in a list or numpy array -Web-Development

Last Answer : answer:

How to compute percentile of the Python array elements -Web-Development

Description : How to compute percentile of the Python array elements -Web-Development

Last Answer : answer:

Python : compute z-score for elements of an array -Web-Development

Description : Python : compute z-score for elements of an array -Web-Development

Last Answer : answer:

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

What circuit is responsible in activating and deactivating adjacent antenna elements in a mobile satellite array? A. Radial divider B. Divider/combiner C. Radial combiner D. Radial multiplexer

Description : What circuit is responsible in activating and deactivating adjacent antenna elements in a mobile satellite array? A. Radial divider B. Divider/combiner C. Radial combiner D. Radial multiplexer

Last Answer : A. Radial divider

In a typical mobile satellite array antenna if three elements are activated, how many elements are deactivated? A. 3 B. 11 C. 5 D. 9

Description : In a typical mobile satellite array antenna if three elements are activated, how many elements are deactivated? A. 3 B. 11 C. 5 D. 9

Last Answer : B. 11

A mobile satellite array has usually how many elements? A. 6 B. 88 C. 12 D. 14

Description : A mobile satellite array has usually how many elements? A. 6 B. 88 C. 12 D. 14

Last Answer : D. 14

How can you sort the elements of the array in descending order?

Description : How can you sort the elements of the array in descending order?

Last Answer : By calling Sort() and then Reverse() methods. 

How can you sort the elements of the array in descending order?

Description : How can you sort the elements of the array in descending order? 

Last Answer : By calling Sort() and then Reverse() methods.

Suppose that data is an array of 1000 integers. Write a single function call that will sort the 100 elements data [222] through data [321].

Description : Suppose that data is an array of 1000 integers. Write a single function call that will sort the 100 elements data [222] through data [321].

Last Answer : quicksort ((data + 222), 100)

Accept data for five students and display it. Write a C++ program to displya sum of array elements of array size n.

Description : Accept data for five students and display it. Write a C++ program to displya sum of array elements of array size n. 

Last Answer : #include<iostream.h> #include<conio.h> void main() { int arr[20],i,n,sum=0; clrscr(); cout<<"\nEnter size of an array:"; cin>>n; cout<<"\nEnter ... ; } cout<<"\nSum of array elements is:"<<sum; getch(); }

Write a C++ program to accept array of five elements, find and display smallest number from an array.

Description : Write a C++ program to accept array of five elements, find and display smallest number from an array.

Last Answer : #include<iostream.h> #include<conio.h> void main() { int a[5],smallest,i; clrscr(); cout<<" Enter array elements:"; for(i=0;i<5;i++) cin>>a[i] ... } } cout<<endl<<"Smallest number="<<smallest; getch(); }

Write a program to sort elements of an array in ascending order.

Description : Write a program to sort elements of an array in ascending order.

Last Answer : #include #include void main() { int a[5],i,j,temp; clrscr(); printf("\n Enter array elements:"); for(i=0;i

Write a program to compute the sum of all elements stored in an array using pointers.

Description : Write a program to compute the sum of all elements stored in an array using pointers.

Last Answer : #include #include void main() { int a[5],sum=0,i,*ptr; clrscr(); printf("\n Enter array elements:"); for(i=0;i

Explain searching elements in array using pointers.

Description : Explain searching elements in array using pointers.

Last Answer : Consider an array of five elements as shown below: A[5]={ 10,20,30,40,50}; Search element(SE)=30 Pointer variable is declare as *ptr; Before starting search process ... If search element is not present in an array, then after comparing all elements stop the search process.

When an array is passed as parameter to a function, which of the following statements is correct ? (A) The function can change values in the original array. (B) In C, parameters are passed by value, the function cannot change the original value in the array. (C) It results in compilation error when the function tries to access the elements in the array. (D) Results in a run time error when the function tries to access the elements in the array.

Description : When an array is passed as parameter to a function, which of the following statements is correct ? (A) The function can change values in the original array. (B) In C, parameters are passed by value, ... . (D) Results in a run time error when the function tries to access the elements in the array.

Last Answer : (A) The function can change values in the original array.

Which antenna does not use the ground? A. Marconi B. Yagi C. Hertz D. Rhombic

Description : Which antenna does not use the ground? A. Marconi B. Yagi C. Hertz D. Rhombic

Last Answer : B. Yagi

Which of the following antennas receive signals in the horizontal plane equality well from all directions? A. Horizontal Hertz antenna B. Vertical loop antenna C. Vertical Yagi antenna D. A vertical antenna which is a quarter-wavelength long

Description : Which of the following antennas receive signals in the horizontal plane equality well from all directions? A. Horizontal Hertz antenna B. Vertical loop antenna C. Vertical Yagi antenna D. A vertical antenna which is a quarter-wavelength long

Last Answer : D. A vertical antenna which is a quarter-wavelength long