A novel direction of arrival estimation technique using a single UWB antenna

Microwave direction finding has attracted a lot of attention due to its wide applications in the military and commercial areas, such as electronic warfare [1], wireless communications [2], etc. Various direction of arrival (DOA) estimation techniques including the estimation of signal parameters via rotational invariance techniques (ESPRIT) [3] and multiple signal classification (MUSIC) [4] have been developed to achieve high degree of accuracy. All of these techniques are based on arrays with multiple antenna elements. However, the power consumption and cost of the RF circuits associated to the arrays increase with the number of antenna elements. To reduce the size, decrease the power consumption and lower the cost, an accurate DOA estimation technique with reduced number of antenna elements is highly desirable.