Antenna Array Polarization Control via Beamforming Segmentation
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Solution Overview
Problem
Existing antenna array systems require complex and costly control circuitry to achieve precise control over microwave signal polarization, which is inefficient and expensive.
Innovation Solution
A polarization control system for antenna arrays using a beam forming network with first and second antenna elements, where the beam forming network provides different signals to subsets of antenna elements to control the amplitude and phase shift, allowing for independent manipulation of beam polarization with less complex and costly control circuitry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional polarization control systems are used, then precise control over microwave signal polarization is achieved, but the control circuitry becomes complex and costly
Solution Approach 1:
The antenna array is divided into multiple subsets, where each subset contains antenna elements with the same polarization direction. The beam forming network provides different signals to different subsets, allowing independent control of each subset's contribution to the overall beam polarization. This segmentation enables precise polarization control through simpler individual subset control rather than controlling each antenna element individually.
Solution Approach 2:
Different subsets of antenna elements are assigned different signal characteristics (amplitude, phase) by the beam forming network to optimize their local contribution to the overall beam polarization. Each subset can be independently adjusted to achieve the desired polarization state, reducing the overall system complexity while maintaining precision.
2Measurement precision
If conventional polarization control systems are used, then precise control over microwave signal polarization is achieved, but the cost increases
Solution Approach 1:
By segmenting the antenna array into subsets with identical polarization directions and controlling each subset collectively rather than individually, the system reduces the number of required control channels and transmit/receive modules. This segmentation strategy directly lowers hardware costs while preserving the ability to achieve precise polarization control through coordinated subset operation.
Solution Approach 2:
The beam forming network is designed to provide different signals to multiple subsets simultaneously, enabling a single control system to manage the polarization of the entire antenna array. This multi-functional approach eliminates the need for separate control circuitry for each antenna element or subset, reducing overall system cost while maintaining precise polarization control capability.
3Measurement precision
If more bits of resolution are used in transmit/receive modules, then control precision is improved, but system complexity and cost increase
Solution Approach 1:
The antenna array is segmented into subsets that are controlled collectively by shared transmit/receive modules. Each module controls multiple antenna elements within a subset, reducing the total number of modules required. This segmentation allows the system to achieve fine polarization control resolution through coordinated control of multiple elements by fewer modules, rather than requiring high-resolution control of each individual element.
Solution Approach 2:
The system applies partial control action to each subset rather than full control to each individual antenna element. By controlling subsets collectively with slightly less resolution per module, the system achieves the same overall polarization control precision as would require excessive resolution in every individual transmit/receive module, thereby reducing overall system complexity.
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 approach reduces the complexity and cost of control circuitry while achieving precise control over microwave signal polarization, enabling the production of electro-magnetic waves with any desired beam polarization, using fewer bits of resolution in transmit/receive modules compared to conventional systems.
Implementation Method 1
precise control of a microwave signal may be obtained by combining the component electro-magnetic waves produced by a multiple quantity of antennas
Implementation Method 2
The first antenna elements have a direction of polarization that is different from a direction of polarization of the second antenna elements
Data Source
AI summary
In one embodiment, a polarization control system for an antenna array comprises a number of first and second antenna elements and a beam forming network. The first antenna elements have a direction of polarization that is different from a direction of polarization of the second antenna elements. The beam forming network, which is coupled to the first and second antenna elements, is operable to provide a second signal to a first subset of the plurality of first antenna elements that is different from a first signal that is provided to the other first antenna elements and provide a third signal to a second subset of the second antenna elements that is different from the first signal that is provided to the other second antenna elements.