Foldable Panel Reconfigurable Antenna Arrays

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Solution Overview

Problem

Foldable panel Reflectarray Antennas for CubeSats face challenges in beamsteering due to increased cost, power requirements, and longer assembly times, as they are typically non-reconfigurable and require more components, limiting their ability to communicate in multiple directions effectively.

Innovation Solution

A reconfigurable array design featuring a central panel with foldable panels that can change their electromagnetic behavior by altering their shape, allowing different combinations of radiating elements to face upward, enabling beamsteering, polarization, and frequency changes through various folding configurations, with panels attached via hinges or creases, and using any suitable actuation system.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If beamsteering techniques are implemented in traditional foldable panel RAs, then communication direction control is improved, but cost increases and power requirements increase

Engineering Contradiction:
Improvebeamsteering capabilityVSAvoidcost and power requirements
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent applies the dynamics principle by making the antenna panels physically reconfigurable through folding mechanisms. The panels can be folded forward or backward to dynamically change the radiation pattern and beam direction without requiring complex electronic beamsteering systems. This mechanical reconfiguration provides beamsteering capability while avoiding the high cost and power requirements of electronic beamsteering techniques.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes the physical parameter of panel configuration (folded vs. unfolded) to achieve different communication directions. By folding the side panels forward or backward, the effective aperture and radiation pattern parameters change, enabling beamsteering in different directions. This parameter change approach replaces complex electronic control with simple mechanical positioning.

Inventive Principle:
Principle #35Parameter changes

2Adaptability or versatility

If spring-loaded hinges are used to attach foldable panels, then panel reconfiguration is enabled, but assembly time increases and production cost increases

Engineering Contradiction:
Improvepanel reconfiguration capabilityVSAvoidassembly time
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent merges the hinge mechanism directly with the panel substrate by creating creases in the substrate material itself. This integration eliminates separate hinge components and their associated assembly steps. The creases are formed as part of the substrate manufacturing process, allowing the panels to be folded and reconfigured without requiring separate hinge assembly operations, thereby reducing assembly time and production cost.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent replaces the mechanical hinge system with creases formed directly in the substrate material. Instead of using separate mechanical hinges that require assembly, the substrate itself is designed with crease lines that enable folding. This substitution eliminates the need for separate hinge components and simplifies the assembly process while maintaining the reconfiguration capability.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Device complexity

If traditional foldable panel RAs are designed for single direction radiation, then structure is simplified, but multi-directional communication capability is limited

Engineering Contradiction:
Improvestructural simplicityVSAvoidmulti-directional communication capability
Core Design Contradiction:
Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent transforms the static single-direction radiation structure into a dynamic multi-directional system by enabling the side panels to be folded forward or backward. This dynamic reconfiguration allows the antenna to switch between different radiation patterns and communicate in multiple directions. The same physical structure serves multiple functional purposes depending on the panel configuration state.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent makes the antenna structure universal by designing it to perform multiple functions through panel folding. The side panels can be folded forward to achieve one radiation pattern, folded backward to achieve another pattern, or positioned in intermediate states for various beam directions. This multi-functionality is achieved without requiring multiple separate antenna structures, maintaining structural simplicity while enabling multi-directional communication.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS10854971B1Reconfigurable arrays with foldable panels
Publication Date: 2020.12.01 FLORIDA INTERNATIONAL UNIVERSITY
  • US10854971B1 patent drawing
  • US10854971B1 patent drawing
  • US10854971B1 patent drawing

AI summary

Arrays that are deployable and can change their electromagnetic behavior by changing their shape are provided. An array can include a central panel and at least one foldable panel attached thereto. The central panel can include radiating elements on its upper surface while each foldable panel can have radiating elements on its bottom surface. The array is reconfigurable by each foldable panel being foldable onto the central panel such that its bottom surface then faces upward and covers part or all of the upper surface of the central panel.