![]() ![]() In the 1930s the first experimental research (South worth and Barrow, 1936) and theoretical analysis (Barrow and Chu, 1939) of horns as antennas was done. One of the first horn antennas was constructed in 1897 by Indian radio researcher Jagadish Chandra Bose in his pioneering experiments with microwaves. Their advantages are moderate directivity, low standing wave ratio (SWR), broad bandwidth, and simple construction and adjustment. ![]() Horns are widely used as antennas at UHF and microwave frequencies, above 300 MHz They are used as feeders (called feed horns) for larger antenna structures such as parabolic antennas, as standard calibration antennas to measure the gain of other antennas, and as directive antennas for such devices as radar guns, automatic door openers, and microwave radiometers. INTRODUCTION 1.1 PROJECT OVERVIEW: A horn antenna or microwave horn is an antenna that consists of a flaring metal waveguide shaped like a horn to direct radio waves in a beam. ![]()
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