Integrated structural electromagnetic shape control of large space anatenna reflectors

A combined shape control procedure of cable mesh reflector antennas with optimality criterion and integrated structural electromagnetic concept

“…By altering dimensions of some special cables, such as surface cables, tie cables, the distorted surface can be adjusted and its electromagnetic performance will be improved with reducing surface accuracy. The shape control algorithms from simple structural disciplinary and structural electromagnetic multidisciplinary have already been investigated by Hafkta and Adelman (1985) and Padula et al (1989), respectively. As for the integrated structural electromagnetic shape control concept presented by Padula et al (1989), the surface rms accuracy added as a constraint in optimization model could promote optimization iterations and provide an efficient way of leading to faster convergence.…”

“…The integrated concept described a direct optimization model with far-field electromagnetic performance rather than implicit limits on surface accuracy. The results (Padula et al 1989) showed that the integrated structural electromagnetic shape control could obtain better electromagnetic performance comparing with simply reducing surface accuracy, and the integrated procedure was preferred in antenna structural design. The integrated structural electromagnetic concept was also adopted in antenna structural design with satisfactory results (Adelman and Padula 1986;Liu and Hollaway 1998;Tolson and Huang 1992).…”

“…In 1989, another multidisciplinary concept of integrated structural electromagnetic shape control (Padula et al 1989) was proposed to overcome the drawback of simple structural shape control. The integrated concept described a direct optimization model with far-field electromagnetic performance rather than implicit limits on surface accuracy.…”

“…This enlightens us to accelerate the optimization by several iterations from simple structural disciplinary. While the acceleration by introducing structural surface rms error into constraints has already been adopted in Padula et al (1989), this study presents another way to promote the convergence. It is a common knowledge that the best electromagnetic performance exits when the reflector surface is in the neighborhood of nominal ideal state, or even exactly the nominal ideal state for solid smooth reflectors.…”

Two-step Structural Design of Mesh Antennas for High Beam Pointing Accuracy

“…Thus, there rises a problem that is it possible to provide a pretension structural design considering electromagnetic performance to obtain high beam pointing accuracy for circularly polarized feeds? The integrated structural electromagnetic design concept [16,17] inspires us with a combined procedure, which makes a pretension design from multidisciplinary viewpoint of structure and electromagnetism.…”