engineering recuitment GATE ECE 2023-24 Test Series Electromagnetic Theory Antennas Antenna Characteristics
Two parabolic reflector antennas operated at 100 MHz and 200 MHz respectively have the same directivity. Assuming that the aperture efficiency of the antenna is 40% and 80% respectively, then the ratio of the diameter of antenna 1 to antenna 2 is (approximately) _______.
1
1.82
2
1.414
3
2.82
4
3.14