1
GATE ECE 2021
Numerical
+1
-0
An antenna with a directive gain of 6 dB is radiating a total power of 16 kw . The amplitude of the electric field in free space at a distance of 8 km from the antenna in the direction of 6 dB gain(rounded off to three decimal places is$\_\_\_\_$ $\mathrm{V} / \mathrm{m}$.
Your input ____
2
GATE ECE 2015 Set 3
MCQ (Single Correct Answer)
+1
-0.3
The directivity of an antenna array can be increased by adding more antenna elements, as a larger number of elements
3
GATE ECE 2014 Set 4
MCQ (Single Correct Answer)
+1
-0.3
Match column A with column B.
Column
1. Point electromagnetic source
2. Dish antenna
3. Yagi-Uda antenna
Column
P. Highly directional
Q. End fire
R. Isotropic
4
GATE ECE 2014 Set 4
Numerical
+1
-0
For an antenna radiating in free space, the electric field at a distance of 1 km is found to be 12 m V/m. Given that intrinsic impedance of the free space is 120$$\pi \Omega $$, the magnitude of average power density due to this antenna at a ditance of 2 km from the antenna (in n W/$${m^2}$$) is
Your input ____
GATE ECE Subjects
Browse all chapters by subject
General Aptitude
Network Theory
Microprocessors
Signals and Systems
Discrete Fourier Transform and Fast Fourier Transform Discrete Time Signal Fourier Series Fourier Transform Continuous Time Signal Laplace Transform Fourier Transform Representation of Continuous Time Signal Fourier Series Transmission of Signal Through Continuous Time LTI Systems Miscellaneous Sampling Continuous Time Linear Invariant System Discrete Time Linear Time Invariant Systems Discrete Time Signal Z Transform Transmission of Signal Through Discrete Time Lti Systems
Electromagnetics
Digital Circuits
Electronic Devices and VLSI
Control Systems
Communications
Engineering Mathematics