Practical implementation of overlapped beamformer in C-band 1D AESA

An Active Electrically Scanned Array (AESA) consists of numerous antenna elements where each of them has its own receiving channel until analogue-digital conversion. In this paper, an analogue microwave matrix called overlap beamformer (OBF) for 1D AESA is presented. OBF has the ability to reduce the number of receivers with a factor of 2 and without degradation of formed digital beams in desired operational sector. The proposed OBF exhibits ± 10° scan sector and is designed in well-established microstrip PCB technology.