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Which of the following feeding has largest bandwidth?(a) Microstrip line feed(b) Coaxial feed(c) Aperture coupling(d) Proximity CouplingThe question was asked at a job interview.This intriguing question originated from Feed Methods in section Slot & Microstrip Antenna of Antennas

Answer»

Correct answer is (d) Proximity Coupling

Explanation: Proximity coupling feed PROVIDES largest BANDWIDTH. Microstrip LINE feed limits the bandwidth due to increase in SUBSTRATE thickness. Coaxial feed has NARROW bandwidth.



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