1
GATE ECE 2000
MCQ (Single Correct Answer)
+2
-0.6
The half-power beam widths (HPBW) of an antenna in the two orthogonal planes are $${100^ \circ }$$ and $${60^ \circ }$$ respectively. The directivity of the antenna is approximately equal to
2
GATE ECE 2000
MCQ (Single Correct Answer)
+2
-0.6
For an 8 feet (2.4 m) parabolic disk antenna operating at 4 GHz, the minimum distance required for far field measurement is closest to
3
GATE ECE 1999
MCQ (Single Correct Answer)
+2
-0.6
A transmitting antenna radiates 251 W isotropically. A receiving antenna, located 100m away from the transmitting antenna, has an effective aperture of 500 cm2. The total power received by the antenna is
4
GATE ECE 1997
MCQ (Single Correct Answer)
+2
-0.6
A parabolic dish antenna has a conical beam 20 wide. The directivity of the antenna is approximately
GATE ECE Subjects
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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