Integrated Structural–Electromagnetic Shape Control of Cable Mesh Reflector Antennas

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

“…Its expression is illustrated in Refs. [17,23]. The constraint gradient matrix G t is based on structural sensitivity analysis of cable tensions with respect to cable dimensions [23].…”

“…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.…”

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

“…When the surface accuracy in (6) decreases down or the boresight directivity in (6) increases up to a temporarily acceptable level, the integrated structural electromagnetic concept will be employed in the following implementation, which directly chooses electromagnetic performance -boresight directivity as object in optimization model. The following multidisciplinary implementation is the same as the authors' previous work in Zhang et al (2015) by iteratively solving a sequential quadratic programming optimization model with gradient vector and Hessian matrix of boresight directivity with respect to cable member dimensions. The quadratic programming optimization model can be expressed as (Zhang et al 2015) find Δl…”

“…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). Later in 2015, the integrated structural electromagnetic shape control was further investigated for cable mesh reflector antennas with approximation method and sensitivity analysis of electromagnetic performance with respect to structural inputs (Zhang et al 2015).…”

“…Although the integrated shape control in Zhang et al (2015) provided better electromagnetic performance than the procedure from simply reducing surface accuracy, it costs much more iterations and more computation time. In 1989, the integrated shape control concept could accelerate the optimization iteration by dropping surface rms error as a constraint instead of eliminating it to provide an effective way of leading to faster convergence.…”