Design of Deployable Antenna of Double-loop Hexahedron Truss

investigating the feasibility of a proposed model for geometric design of deployable arch structures

deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...

Closed-Loop Deployable Structures

This paper is concerned with a novel kind of deployable structures that form closed loops that fold into a bundle of bars using simple hinges. These structures, first envisaged by Dr J.M. Hedgepeth, have potential applications for ultra-lightweight solar arrays, solar sails, and radar structures. A systematic study of the kinematics of closed-loop structures is carried out, and a scheme for sim...

Design and Simulation of Double Loop Control for Power Converter Fed Variable Speed DC Drive

an infinite planar array of rectangular microstrip patch antenna analysis

the methods which are used to analyze microstrip antennas, are divited into three categories: empirical methods, semi-empirical methods and full-wave analysis. empirical and semi-empirical methods are generally based on some fundamental simplifying assumptions about quality of surface current distribution and substrate thickness. thses simplificatioms cause low accuracy in field evaluation. ful...

Rapid Deployable Antenna Concept Selection for Cubesats

In this paper, we present a new graphical tool for the preliminary design of deployable CubeSat antennas aimed at coupling electromagnetic and structural antenna design. The proposed methodology predicts antenna performance characteristics using analytical expressions and compares them graphically against antenna geometric parameters. Such a technique allows the comparison and analysis of sever...