Question
a.
maintaining spacing between two consecutive radiating sources less than λ/2
b.
maintaining the amplitudes in radiating sources, from outer towards the centre source, proportional to the coefficients of the successive terms of the binomial series
c.
both (a) and (b)
d.
none of the above
Posted under Electronics and Communication Engineering
Interact with the Community - Share Your Thoughts
Uncertain About the Answer? Seek Clarification Here.
Understand the Explanation? Include it Here.
Q. The secondary lobes in binomial arrays can be reduced by
Similar Questions
Explore Relevant Multiple Choice Questions (MCQs)
Q. Which of the following statement is incorrect?
View solution
Q. The maximum effective aperture of a microwave antenna which has a directivity of 900, will be
View solution
Q. For a wave propagating in air filled rectangular waveguide.
View solution
Q. Which of following antenna produces elliptical polarisation?
View solution
Q. The troposphere extends from earth surface to a height of
View solution
Q. Antenna reciprocity is put to use in
View solution
Q. For satellite communication, the frequency should be
View solution
Q. A plane EM wave is travelling in an unbound loss less dielectric having μy = 1 and εy = 4, the time average Poynting vector of the wave is 5 W/m³ . The phase velocity vp (assuming velocity of light as 3 x 10⁸ m/sec) is
View solution
Q. The phase velocity in a coaxial line is
View solution
Q. D-layer extends approximately from
View solution
Q. The ionosphere plays a significant role in radio wave propagation at
View solution
Q. Radiation resistance for wire antenna is
View solution
Q. When a coil consisting of single turn rotates at a uniform speed in a magnetic field, the induced e.m.f. is
View solution
Q. Short-circuited stubs are used, because open-circuited stubs are
View solution
Q. Directivity and beamwidth is related as
View solution
Q. An arrangement of several individual antennas to spaced and phased that their individual contributions combine in one preferred direction and cancel in all other directions, to get greater directive gain or directivity, is known as
View solution
Q. A very reliable service has to be established between two points on earth separated by 1000 km. The band that will be used as
View solution
Q. A rectangular waveguide (2.29 x 1.02) cm operates at a freq. of 11 GHz in TE₁₀ mode. If the maximum potential gradient of the signal is 5 kV/cm, then the maximum power handling capacity of the waveguide will be
View solution
Q. A parabolic antenna produces a radiation pattern which is
View solution
Q. Considerable ionization occurs between the range
View solution
Recommended Subjects
Are you eager to expand your knowledge beyond Electronics and Communication Engineering? We've handpicked a range of related categories that you might find intriguing.
Click on the categories below to discover a wealth of MCQs and enrich your understanding of various subjects. Happy exploring!
