Diffusion-bonded W-band monopulse array antenna for space debris radar

TítuloDiffusion-bonded W-band monopulse array antenna for space debris radar
Tipo de publicaciónJournal Article
Year of Publication2020
AutoresGarcia-Marin, E., J. L. Masa-Campos, and P. Sanchez-Olivares
JournalAEU - International Journal of Electronics and Communications
Volumen116
Pagination153061
ISSN1434-8411
Palabras clavemillimeter wave technology, Planar arrays, radar antennas
ResumenIn this letter, the design and fabrication of a W-band high-gain monopulse array antenna are presented. The antenna is conceived as a proof of concept for a space debris detection project to develop an on-board radar for a satellite system. The antenna array consists of 16 by 16 circularly polarized radiating cavities fed by a corporate waveguide network with an amplitude taper. An underlying monopulse beamforming network is implemented in waveguide technology as well, providing monopulse capability in both main radiating planes. By means of diffusion bonding, the antenna has been fabricated in a single piece, despite its intricate, multilayer topology. Moreover, the experimental performance shows high agreement with simulations, which is remarkable due to the high sensitivity to manufacturing tolerances at this frequency. Over a 10% bandwidth is experimentally achieved for efficiency over a 75%, axial ratio under 3 dB and impedance matching under −10 dB.
URLhttp://www.sciencedirect.com/science/article/pii/S1434841119320436
DOI10.1016/j.aeue.2019.153061