Design of small loop antennas for on-the-move HF manpack radios

摘要

A design of electrically small multi-turn loop antennas for on-the-move man-pack high frequency near vertical incidence skywave communications is discussed. Parameters such as bandwidth, gain, and RF exposure are considered for loops with 1, 2 and 3 turns as well as with a 2-arm loop configuration. For the initial study, all loop diameters are set at 1 m. It is shown that more turns on a loop antenna improve gain, whereas the 2-arm configuration improves overall performance expressed in the bandwidth/efficiency product.