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

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

1 Answer

Answer :

By increasing the lengths of the elements of the array.
by

Related questions

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.

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

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

What happens to the bus bar dimensions of the waveguide when the frequency is increased?

Description : What happens to the bus bar dimensions of the waveguide when the frequency is increased?

Last Answer : The bus bar becomes wider.

If the inductor and capacitor values are increased, what happens to the resonant frequency?

Description : If the inductor and capacitor values are increased, what happens to the resonant frequency?

Last Answer : Decreases.

The frequency range of a waveguide is determined by what dimensions?

Description : The frequency range of a waveguide is determined by what dimensions?

Last Answer : . The "a" dimension.

What is the typical frequency range about the center frequency of a tunable magnetron?

Description : What is the typical frequency range about the center frequency of a tunable magnetron?

Last Answer : . ±5 percent.

What is the frequency range of magnetron oscillators?

Description : What is the frequency range of magnetron oscillators?

Last Answer : 600-30,000 megahertz.

What is the typical frequency range about the center frequency of a tunable magnetron?

Description : What is the typical frequency range about the center frequency of a tunable magnetron?

Last Answer : ±5 percent.

What is the frequency range of magnetron oscillators?

Description : What is the frequency range of magnetron oscillators?

Last Answer : . 600-30,000 megahertz.

What limits the tuning range around the center frequency of a reflex klystron in a particular mode of operation?

Description : What limits the tuning range around the center frequency of a reflex klystron in a particular mode of operation?

Last Answer : The half-power points of the mode.

Which of the two types of magnetic tape is used to record audio and instrumentation type signals in the VLF to 2.5MHz frequency range?

Description : Which of the two types of magnetic tape is used to record audio and instrumentation type signals in the VLF to 2.5MHz frequency range?

Last Answer : Analog magnetic tape.

Which has a wider frequency range, a simple dipole or a folded dipole?

Description : Which has a wider frequency range, a simple dipole or a folded dipole?

Last Answer : Folded dipole.

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.

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.

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.

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.

Two circles intersect at A and B. AC and AD are respectively the diameters of the circles. Prove that C, B and D are collinear. -Maths 9th

Description : Two circles intersect at A and B. AC and AD are respectively the diameters of the circles. Prove that C, B and D are collinear. -Maths 9th

Last Answer : Join CB, BD and AB, Since, AC is a diameter of the circle with centre O. ∴ ∠ABC = 90° [angle in semi circle] ---- (i) Also, AD is a diameter of the circle with center O . ∴ ∠ABD = 90° [angle in ... ⇒ ∠ABC + ∠ABD = 180° So. CBD is a straight line. Hence C, B and D are collinear . Hence proved.

Plot the following points and check whether they are collinear or not -Maths 9th

Description : Plot the following points and check whether they are collinear or not -Maths 9th

Last Answer : (i) Plotting the points P (1, 3), Q (-1, -1) and R (-2, - 3) on the graph paper and join these points, we get a straight line. Hence, these points are collinear. (ii) Plotting the points ... 6 (5, 5)on the graph paper and join these points, we get a straight line. Hence, given points are collinear.

Two circles intersect at A and B. AC and AD are respectively the diameters of the circles. Prove that C, B and D are collinear. -Maths 9th

Description : Two circles intersect at A and B. AC and AD are respectively the diameters of the circles. Prove that C, B and D are collinear. -Maths 9th

Last Answer : Join CB, BD and AB, Since, AC is a diameter of the circle with centre O. ∴ ∠ABC = 90° [angle in semi circle] ---- (i) Also, AD is a diameter of the circle with center O . ∴ ∠ABD = 90° [angle in ... ⇒ ∠ABC + ∠ABD = 180° So. CBD is a straight line. Hence C, B and D are collinear . Hence proved.

Plot the following points and check whether they are collinear or not -Maths 9th

Description : Plot the following points and check whether they are collinear or not -Maths 9th

Last Answer : (i) Plotting the points P (1, 3), Q (-1, -1) and R (-2, - 3) on the graph paper and join these points, we get a straight line. Hence, these points are collinear. (ii) Plotting the points ... 6 (5, 5)on the graph paper and join these points, we get a straight line. Hence, given points are collinear.

Plot the following points and check whether they are collinear or not: -Maths 9th

Description : Plot the following points and check whether they are collinear or not: -Maths 9th

Last Answer : Solution :-

There are 18 points in a plane such that no three of them are in the same line except five points which are collinear. -Maths 9th

Description : There are 18 points in a plane such that no three of them are in the same line except five points which are collinear. -Maths 9th

Last Answer : answer:

Show that the points (a, b + c), (b, c + a), (c, a + b) are collinear. -Maths 9th

Description : Show that the points (a, b + c), (b, c + a), (c, a + b) are collinear. -Maths 9th

Last Answer : Let A(x1, y1) ≡ (1, 3), B(x2, y2) ≡ (2, 4), C(x3, y3) ≡ (5, 6) be the vertices of ΔABCArea of ΔABC = \(rac{1}{2}\) |{\(x_1\)(y2 – y3) + \(x_2\)(y3 – y1) + \(x​​_3\)(y1 – y2)}|= \(rac{1}{2}\) |{1(4 – 6) + 2(6 – 3) + 5(3 – 4)}| = \(rac{1}{2}\) |{–2 + 6 – 5}| = \(rac{1}{2}\) sq. units.

If the points (x, 1), (1, 2) and (0, y + 1) are collinear show that -Maths 9th

Description : If the points (x, 1), (1, 2) and (0, y + 1) are collinear show that -Maths 9th

Last Answer : Two lines are parallel if their slopes are equal∴ \(rac{0-(-8)}{3-(-5)}\) = \(rac{a-3}{4-6}\) ⇒ \(rac{8}{8}\) = \(rac{a-3}{-2}\) ⇒ a – 3 = –2 ⇒ a = 1.

If the points A(1, 2), B(0, 0) and C(a, b) are collinear, then -Maths 9th

Description : If the points A(1, 2), B(0, 0) and C(a, b) are collinear, then -Maths 9th

Last Answer : (a) - 2For three points to be collinear, area of the triangle formed by the three points should be equal to zero, i.e.\(rac{1}{2}\) [k(3k - 1) + 2k(1 - 2k) + 3(2k - 3k)] = 0⇒ \(rac{1}{2}\) [3k2 - k + ... = 0 or -2 Neglecting k = 0, as then (k, 2k) and (2k, 3k) will be the same point, we take k = -2.

If the three points (k, 2k), (2k, 3k) and (3, 1) are collinear then k is equal to -Maths 9th

Description : If the three points (k, 2k), (2k, 3k) and (3, 1) are collinear then k is equal to -Maths 9th

Last Answer : (d) 3Let (x, y) be the co-ordinates of the third vertex of the triangle. Then\(rac{0+2+x}{3}\) = 1 and \(rac{0+0+y}{3}\) = 1⇒ 2 + \(x\) = 3 and y = 3 ⇒ \(x\) = 1, y = 3. ∴ Co-ordinates of vertices of the triangle ... - y3) + x2 (y2 - y3) + x3(y1 - y2)]= \(rac{1}{2}\) [0+6+0] = \(rac{6}{2}\) = 3.

If the points with the co-ordinates {a, ma}, {b, (m + 1)b}, {c, (m + 2)c} are collinear, then which of the following is correct ? -Maths 9th

Description : If the points with the co-ordinates {a, ma}, {b, (m + 1)b}, {c, (m + 2)c} are collinear, then which of the following is correct ? -Maths 9th

Last Answer : (d) (7, -2)Let the co-ordinates of R be (x, y). As can be easily seen, it is a point of external division Also, PR = 2QR⇒ R divides the join of P and Q externally in the ratio 2:1. ∴ x = \(rac{2 imes2-1 imes-3}{2-1}\), ... }{2-1}\)⇒ x = 4 + 3 = 7 and y = 2 - 4 = -2. ∴ Co-ordinates of R are (7, -2).

If the points A(1, 2), B(2, 4) and C(3, a) are collinear, what is the length of BC ? -Maths 9th

Description : If the points A(1, 2), B(2, 4) and C(3, a) are collinear, what is the length of BC ? -Maths 9th

Last Answer : (c) √5 units Area of Δ ABC = 0 for collinearity of A, B, C.⇒ \(rac{1}{2}\)[1(4 – a) + 2(a – 2) + 3(2 – 4)] = 0 ⇒ 4 – a + 2a – 4 + 6 – 12 = 0 ⇒ a – 6 = 0 ⇒ a = 6. ∴ Point C ≡ (3, 6)⇒ BC = \(\sqrt{(3-2)^2+(6-4)^2}\) = \(\sqrt{1+4}\) = √5 units .

Find the relation between x and y if points (2, 1), (x, y) and (7, 5) are collinear. -Maths 9th

Description : Find the relation between x and y if points (2, 1), (x, y) and (7, 5) are collinear. -Maths 9th

Last Answer : answer:

What minimum number of non-zero non-collinear vectors is required to produce a zero vector? -General Knowledge

Description : What minimum number of non-zero non-collinear vectors is required to produce a zero vector? -General Knowledge

Last Answer : The answer is '3'

What minimum number of non-zero non-collinear vectors is required to produce a zero vector? -General Knowledge

Description : What minimum number of non-zero non-collinear vectors is required to produce a zero vector? -General Knowledge

Last Answer : answer:

What minimum number of non-zero non-collinear vectors is required to produce a zero vector? -General Knowledge

Description : What minimum number of non-zero non-collinear vectors is required to produce a zero vector? -General Knowledge

Last Answer : answer:

Who Four points are always coplaner if:A. They lie on different planesB. They lie on different linesC. They line in the same planeD. They are collinear?

Description : Who Four points are always coplaner if:A. They lie on different planesB. They lie on different linesC. They line in the same planeD. They are collinear?

Last Answer : C. They lie in the same planeD. They are collinear

If the angles of elevation of the top of tower from three collinear points `A`, `B` and `C`, on a line leading to the foot of the tower, are `30^(@)`,

Description : If the angles of elevation of the top of tower from three collinear points `A`, `B` and `C`, on a line leading to the foot of the tower, are `30^(@)`,

Last Answer : If the angles of elevation of the top of tower from three collinear points `A`, `B` and `C`, on a line leading to ... )` C. `1 : sqrt(3)` D. `2 : 3`

Best description of a collinear and broadside antenna radiation pattern. A. Bidirectional B. Perfect circle C. Unidirectional D. Omnidirectional

Description : Best description of a collinear and broadside antenna radiation pattern. A. Bidirectional B. Perfect circle C. Unidirectional D. Omnidirectional

Last Answer : A. Bidirectional

What minimum number of non-zero non-collinear vectors is required to produce a zero vector?

Description : What minimum number of non-zero non-collinear vectors is required to produce a zero vector?

Last Answer : 3

Two non-collinear parallel equal forces acting in opposite direction (A) Balance each other (B) Constitute a moment (C) Constitute a couple (D) Constitute a moment of couple

Description : Two non-collinear parallel equal forces acting in opposite direction  (A) Balance each other  (B) Constitute a moment  (C) Constitute a couple  (D) Constitute a moment of couple 

Last Answer : (C) Constitute a couple 

The radiation pattern of collinear and a broadside antenna is __

Description : The radiation pattern of collinear and a broadside antenna is __

Last Answer : bidirectional

Two non-collinear parallel equal forces acting in opposite direction?

Description : Two non-collinear parallel equal forces acting in opposite direction?

Last Answer : Two non-collinear parallel equal forces acting in opposite direction constitute a couple.