Antenna Modulation Pattern Selection via Spatial Holographic Phase
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Solution Overview
Problem
Existing antenna systems face challenges in optimizing modulation patterns based on spatial holographic phases and effective mode indices, leading to suboptimal performance in terms of gain, beamwidth, and signal quality due to limitations in element spacing and mutual coupling effects.
Innovation Solution
An antenna system with a controller that determines and selects modulation patterns based on both spatial holographic phases and effective mode indices, optimizing performance parameters such as gain and beam direction, using EM scattering elements spaced at sub-wavelength distances and adjusting their properties in real-time to enhance power coupling and signal quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If element spacing is reduced to sub-wavelength distances, then mutual coupling effects are reduced and modulation pattern optimization is improved, but device complexity and manufacturing precision requirements increase
Solution Approach 1:
The patent changes the physical parameter of element spacing to sub-wavelength distances, which fundamentally alters the electromagnetic interaction between elements. This parameter change reduces mutual coupling effects and enables optimized modulation patterns while managing the increased manufacturing precision requirements through careful design
Solution Approach 2:
The patent implements real-time adjustment of element properties (such as impedance or resonance frequency) to dynamically optimize modulation patterns. This dynamic control allows the system to adapt to varying operating conditions and compensate for manufacturing tolerances, resolving the contradiction between reduced spacing and manufacturing precision
2Reliability
If brute-force methods are used to optimize modulation patterns, then comprehensive search of parameter space is achieved, but computational complexity and time consumption increase significantly
Solution Approach 1:
The patent pre-calculates and stores optimal modulation patterns for different operating conditions during a design or calibration phase. This preliminary action creates a lookup table or database of optimized parameters, allowing real-time operation to simply retrieve pre-determined optimal settings rather than performing exhaustive searches, thus resolving the contradiction between comprehensive optimization and computational time
Solution Approach 2:
The patent divides the parameter optimization problem into separate, manageable segments corresponding to different operating conditions or beam directions. Each segment is optimized independently and stored, allowing the system to efficiently select the appropriate pre-optimized segment rather than re-optimizing the entire parameter space each time, reducing computational complexity while maintaining optimization quality
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
The system achieves improved antenna performance by optimizing modulation patterns in real-time, enhancing gain, beam steering, and signal quality, while reducing computational complexity compared to brute-force methods.
Implementation Method 1
EM scattering elements configured to scatter an EM reference wave to produce an EM radiative wave
Data Source
AI summary
Antenna systems and related methods are disclosed. An antenna system includes an antenna controller configured to operably couple to an array of electromagnetic (EM) scattering elements. The controller is configured to determine a performance parameter of the antenna system for a plurality of different combinations of different spatial holographic phases and effective mode indices having different modulation patterns corresponding thereto, and select one of the modulation patterns based on the performance parameter corresponding thereto. A method includes storing data indicating a modulation pattern determined based on a spatial holographic phase and an effective mode index for each of a plurality of different main beam angles from the antenna, and controlling the antenna to operate with a main beam pointed in each of the plurality of different main beam angles by controlling the antenna to operate in each modulation pattern corresponding to the plurality of main beam angles.