EXPANDABLE PHASE ARRAY ANTENNA
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United States of America
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Issued Date -
Mar 13, 2025
app pub date -
Sep 7, 2023
filing date -
Sep 7, 2023
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Abstract
An expandable phased-array antenna assembly is described herein for mounting on a communication satellite. Embodiments include an expander carriage configured electromechanically to transition between a retracted configuration (e.g., during launch and initial deployment) and an expanded configuration (e.g., during operational ground communications) along an expansion direction. Embodiments include zigzag-shaped struts coupled with the expander carriage and having phased-array radiating elements (REs) mounted thereon. The expander carriage operate so that the struts are spaced at a smaller inter-strut spacing in the retracted configuration and at a larger inter-strut spacing in the expanded configuration. The struts and REs are arranged so that, in the expanded configuration, the REs form an operational phased-array lattice pattern. In some embodiments, the physical area of the phased-array antenna is at least forty percent smaller in the retracted configuration than in the expanded configuration.
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