Abstract This paper presents the design technique for a series-fed traveling-wave microstrip patch antenna array. The unique feature of this design is the employment of a notched feed patch as a radiating termination patch in combination with varying widths of radiating elements. This technique produces a low sidelobe performance. To achieve this effect, the antenna array is horizontally polarized, with measured results of -30 dB sidelobe, 4.5 degree 3-dB beamwidth, and 12 dBi gain at 39...

Abstract The primary purpose of this paper is to explore the principles involving radio interferometry. Radio interferometry provides the capability to derive the direction of arrival (DOA) of radio frequency signals. The direction of arrival is generated from the signal characteristics of an incoming plane wave which was generated by some unknown emitter. This paper discusses the use of a four element linear array as a phase interferometer to compute the direction of arrival of an incoming RF...