Drawbacks of the normal mode of radiation in helical antenna are _______(a) low radiation efficiency and narrow bandwidth(b) high radiation efficiency and narrow bandwidth(c) low radiation efficiency and Broad bandwidth(d) high radiation efficiency and broad bandwidthThis question was addressed to me in my homework.This intriguing question comes from Frequency Independent Antenna topic in division Frequency Independent Antenna of Antennas

Drawbacks of the normal mode of radiation in helical antenna are _____

1.	Drawbacks of the normal mode of radiation in helical antenna are _______(a) low radiation efficiency and narrow bandwidth(b) high radiation efficiency and narrow bandwidth(c) low radiation efficiency and Broad bandwidth(d) high radiation efficiency and broad bandwidthThis question was addressed to me in my homework.This intriguing question comes from Frequency Independent Antenna topic in division Frequency Independent Antenna of Antennas
Answer» CORRECT option is (a) low radiation efficiency and NARROW bandwidth Explanation: In normal mode, the radiation is perpendicular to axis. The radiation PATTERN of a HELICAL antenna is a combination of small DIPOLE and loop antenna. In normal mode of radiation, it provides narrow bandwidth and low radiation efficiency.

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