GATE Electromagnetics: Antennas and Antenna Arrays – Previous Year Questions
8 GATE previous year questions on Antennas and Antenna Arrays (Electromagnetics, Electronics and Communication Engineering) with answers and explanations, from every paper.
- GATE 2017 EC Q35 – Consider a wireless communication link between a transmitter and a receiver located in free space, with finite and strictly positive capacity. If the…
- GATE 2017 EC Q65 – A half wavelength dipole is kept in the x-y plane and oriented along 45° from the x-axis. Determine the direction of null in the radiation pattern for…
- GATE 2016 EC Q63 – Two lossless X-band horn antennas are separated by a distance of 200. The amplitude reflection coefficients at the terminals of the transmitting and…
- GATE 2016 EC Q65 – The far-zone power density radiated by a helical antenna is approximated as: W rad = W average a r C 0 1r24 The radiated power density is symmetrical…
- GATE 2019 EC Q33 – The radiation resistance of a small dipole current element of length l at a frequency of 3 GHz is 3 ohms. If the length is changed by 1%, then the…
- GATE 2020 EC Q53 – For an infinitesimally small dipole in free space, the electric field E in the far field is proportional to (e-jkr/r), where k=2/. A vertical…
- GATE 2021 EC Q65 – 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…
- GATE 2026 EC Q21 – Consider the Friis’ transmission equation P R=(P TG TG R2)/(4 D)2, where P R and P T are the received and the transmitted powers, respectively. G T…