Re-Configurable Repeater Beam-Shaping Unit for Accurate Steering
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing re-configurable repeater devices (RRDs) face challenges in providing reliable and accurate spatial filtering, particularly at mm-wave and THz frequencies, due to limited effective aperture and increased quantization errors, which affect beam steering and coverage at high frequencies.
Innovation Solution
Incorporating a beam-shaping unit upstream of the re-configurable elements to increase the beam diameter of incoming electromagnetic waves, allowing for more accurate beam steering and reduced quantization errors by enlarging the effective optical aperture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the effective aperture of the RRD is increased to improve beam steering accuracy, then the device complexity increases due to the need for additional re-configurable elements
Solution Approach 1:
A beam-shaping unit is introduced as an intermediary component between the incoming beam and the array of re-configurable elements. This unit pre-shapes the incoming beam to increase its diameter before it reaches the reflective surface, thereby increasing the effective aperture and improving beam steering accuracy without requiring additional re-configurable elements
Solution Approach 2:
The beam-shaping unit performs preliminary action by pre-increasing the beam diameter of incoming electromagnetic waves before they reach the array of re-configurable elements. This preliminary beam shaping ensures that a larger area of the reflective surface is illuminated, improving the effective aperture and reducing quantization errors in advance
2Measurement precision
If the beam diameter is increased to reduce quantization errors, then the area of the reflective surface required increases
Solution Approach 1:
The beam-shaping unit acts as an intermediary that increases the beam diameter of incoming waves before they reach the reflective surface. This allows the existing reflective surface area to be more effectively utilized, reducing quantization errors without requiring a proportional increase in the physical size of the reflective surface
Solution Approach 2:
The beam-shaping unit changes the parameter of beam diameter by introducing optical elements (such as lenses or metasurfaces) that expand the beam width. This parameter change increases the number of re-configurable elements that can be effectively utilized, thereby reducing quantization errors while maintaining a compact device footprint
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances beam steering accuracy and reduces quantization effects, enabling higher gain and improved coverage by increasing the illuminated area on the reflective surface, particularly effective at mm-wave and THz frequencies.
Implementation Method 1
The beam-shaping unit is configured to increase a beam diameter of the incoming beam
Implementation Method 2
An LIS can be implemented by an array of antennas that reflect incoming electromagnetic waves/signals
Implementation Method 3
The re-configurable elements of the array of the re-configurable elements are configured to impose a respective phase shift onto outgoing electromagnetic waves of the outgoing beam with respect to incoming electromagnetic waves of the incoming beam
Data Source
AI summary
A re-configurable repeater device—such as a large intelligent surface or an amplify-and-forward repeater—includes an array of reflective elements and a beam-shaping unit in front of the array. The beam-shaping unit is configured to increase a beam diameter of an incoming beam. For instance, the divergence of incoming electromagnetic waves can be increased. It would be possible that the beam-shaping unit is im-plemented as a lens, e.g., a Luneberger-type lens.