Aperture Expansion Flaps for Antenna Directivity Control
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Solution Overview
Problem
Conventional antenna systems are limited by their physical area, geometry, and orientation, making it difficult to expand their effective aperture and adjust radiation patterns, angular coverage, and directivity to adapt to their surroundings.
Innovation Solution
The use of aperture expansion flaps, comprising a plurality of resonators arranged in super cells, which are actively tuned to reflect and refract incident wireless signals with adjusted phases, effectively increasing the antenna's effective aperture and allowing for dynamic control of radiation patterns and directivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If conventional antenna systems use fixed physical area and geometry, then the structure is simple and easy to manufacture, but the effective aperture is limited and cannot be expanded
Solution Approach 1:
The patent applies dynamics by making the antenna aperture expandable through movable flaps that can change the physical area of the antenna. The flaps are positioned at the edges of the antenna aperture and can be extended or retracted to dynamically adjust the effective aperture area, allowing the antenna to adapt to different coverage requirements without requiring multiple fixed-structure antennas.
Solution Approach 2:
The patent applies dimensionality change by introducing a new spatial dimension for aperture expansion. Instead of only adjusting the radiation pattern in the conventional two-dimensional plane, the expandable flaps add a third dimension by extending outward from the antenna edges, effectively increasing the aperture area in a direction perpendicular to the original antenna surface.
2Adaptability or versatility
If conventional antenna systems use fixed orientation, then the installation is simple, but the angular coverage and directivity cannot be adjusted to adapt to surroundings
Solution Approach 1:
The patent applies dynamics by enabling the antenna radiation pattern to be dynamically adjusted through electronically controlled phase shifters and amplitude modifiers. These components allow the beamforming weights to be changed in real-time, adapting the radiation pattern to different directional requirements without physically reorienting the entire antenna structure.
Solution Approach 2:
The patent applies parameter changes by modifying the electrical parameters (phase and amplitude) of signals fed to different antenna elements through variable phase shifters and attenuators. By changing these parameters, the radiation pattern, beam direction, and angular coverage can be adjusted to adapt to different environmental conditions and coverage requirements.
3Area of stationary object
If aperture expansion flaps with resonators are added to increase effective aperture, then the radiation pattern synthesis and angular coverage improve, but the device complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the aperture expansion function into separate modular flaps positioned at different edges of the antenna aperture. Each flap contains its own resonators and can be independently controlled, allowing the system to achieve complex radiation patterns through coordinated operation of simpler individual segments rather than requiring a single complex expanding structure.
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
This solution enables the expansion of the antenna's effective aperture beyond its original physical limits, improving radiation pattern synthesis, angular coverage, and adaptability to the environment without adding complexity or increasing power consumption.
Implementation Method 1
each resonator of the plurality of resonators may be tuned to reflect and/or refract an incident wireless signal with a respective adjusted phase
Implementation Method 2
each resonator of the plurality of resonators may be tuned to reflect and/or refract an incident wireless signal with a respective adjusted phase
Implementation Method 3
The aperture expansion flap may include a plurality of resonators, wherein each resonator of the plurality of resonators may be tuned
Data Source
AI summary
Embodiments of an aperture expansion flap are disclosed. An aperture expansion flap may be used in conjunction with an antenna to expand an effective aperture of the antenna beyond its physical area, geometry, and orientation. An aperture expansion flap may include one or more resonators which may be tuned to adjust a reflection and/or refraction phase of an incident wireless signal, such that the wireless signal may be reflected and/or refracted at angle of reflection and/or refraction that is different than an angle of incidence.