Stacked Antenna Boards for Adaptive Polarization Reception
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Solution Overview
Problem
Conventional linear-polarized reconfigurable antennas are limited to only horizontal, vertical, and 45-degree polarizations, failing to adapt to complex channel environments where polarization rotation occurs, leading to reduced receive power.
Innovation Solution
An antenna assembly with two stacked antenna boards, each separating electromagnetic waves into horizontal and vertical polarization components, and controlled by liquid crystal dielectric layers to adjust reflection and transmission power ratios and phase shifts, enabling vector synthesis into various polarizations including linear, circular, and elliptic.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional linear-polarized reconfigurable antennas are used, then the antenna structure is simple, but the polarization adjustment is limited to only horizontal, vertical, and 45-degree polarizations
Solution Approach 1:
The antenna is divided into two separate antenna boards stacked perpendicular to each other, with each board handling one polarization component. This segmentation allows independent control of each polarization channel, enabling versatile polarization adjustment while maintaining manageable structural complexity through modular design
Solution Approach 2:
The patent transitions from a single-plane antenna structure to a three-dimensional stacked configuration with two antenna boards oriented perpendicular to each other. This dimensional change enables the antenna to handle both horizontal and vertical polarization components simultaneously, achieving random polarization adjustment capability
2Reliability
If conventional linear-polarized antennas are used, then the device complexity is low, but the receive power deteriorates in complex channel environments with polarization rotation
Solution Approach 1:
The patent incorporates control circuits that can detect the polarization state of received signals and dynamically adjust the antenna's polarization response accordingly. This feedback mechanism ensures reliable receive power by adapting to polarization rotation in complex channel environments, while the automated control reduces the perceived complexity for users
Solution Approach 2:
The antenna assembly combines two different antenna boards with perpendicular polarizations into a composite structure. This composite design enables the system to maintain reliable receive power across various polarization conditions by synthesizing responses from both boards, achieving robustness through structural integration
3Adaptability or versatility
If the antenna assembly uses two stacked antenna boards with perpendicular polarization manners, then the polarization versatility is improved, but the device complexity increases
Solution Approach 1:
The patent merges two antenna boards with perpendicular polarizations into a single integrated antenna assembly that functions as one cohesive unit. The control circuits combine the outputs of both boards to generate any desired polarization state, achieving versatile polarization coverage while presenting a unified interface that manages the inherent 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
Enhances receive power by allowing random adjustment of polarization to any angle or type, improving reception in complex environments.
Implementation Method 1
the first liquid crystal dielectric layer is disposed between the upper dielectric substrate and the lower dielectric substrate... the control circuit is configured to change a ratio of reflection power to transmission power of the antenna board by controlling a voltage of the first liquid crystal dielectric layer
Implementation Method 2
the two antenna boards are configured to separate a received electromagnetic wave into a horizontal polarization component and a vertical polarization component
Implementation Method 3
the lower conductor layer and the lower dielectric substrate form a phase-shift network structure... the phase shift amounts are used to change phases of polarization components corresponding to the two antenna boards
Data Source
AI summary
An antenna assembly is provided, including two antenna boards that are placed in a stacked manner. Polarization manners of the two antenna boards are perpendicular to each other, and the two antenna boards are configured to separate a received electromagnetic wave into a horizontal polarization component and a vertical polarization component. A bias voltage is applied to a liquid crystal dielectric layer in the two antenna boards to change ratios of reflection power to transmission power of the two antenna boards, to change a ratio of reflection power of the two polarization components that are obtained through separation, and implement linear polarization at different angles after vector synthesis is performed on the two polarization components. According to the present application, receive power of an antenna is increased.