Liquid Crystal Vehicle Window Antennas for Adaptive Sensing
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Solution Overview
Problem
Existing antenna arrays for vehicles are static and non-adaptive, requiring significant manufacturing effort and cannot be easily integrated into vehicle structures, especially for large distributed arrays, and are not transparent to the human eye.
Innovation Solution
Utilizing liquid crystal technology for antenna elements that can be configured flexibly and transparently, allowing for adaptive control of electromagnetic radiation emission and reception, including frequency, amplitude, and phase modulation, and enabling integration into vehicle windows without obstructing visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional antenna arrays are used, then electromagnetic radiation can be emitted and received, but the antenna structures are static, non-adaptive, and require significant manufacturing effort
Solution Approach 1:
The patent applies liquid crystal technology to create dynamically reconfigurable antenna elements. The liquid crystal molecules can be electrically controlled to change their orientation, thereby dynamically adjusting the antenna's radiation characteristics, beam direction, and configuration without physical repositioning or complex mechanical structures.
Solution Approach 2:
The invention changes the physical state and orientation parameters of liquid crystal molecules through electrical control. By applying different voltages, the liquid crystal molecules reorient themselves, which directly changes the antenna's electromagnetic radiation parameters such as beam direction, gain, and polarization, enabling adaptive configuration without mechanical movement.
2Measurement precision
If large distributed antenna arrays are implemented, then high-resolution sensing and communication are achieved, but integration into vehicle structures becomes difficult and manufacturing complexity increases
Solution Approach 1:
The patent divides the large distributed antenna array into multiple independent liquid crystal-based antenna elements that can be individually controlled. Each element can be independently configured and adjusted, allowing the system to achieve high-resolution sensing through coordinated operation of segmented elements while simplifying manufacturing and integration compared to a monolithic array structure.
Solution Approach 2:
By electrically controlling the orientation and state of liquid crystal molecules in each antenna element, the system can dynamically adjust radiation patterns and beam directions. This parameter control enables high-resolution environmental sensing through electronic steering and configuration without requiring complex mechanical positioning or rigid structural integration.
3Illumination intensity
If antenna arrays are integrated into vehicle windows, then transparency is maintained, but the antenna elements must be thin and flexible
Solution Approach 1:
The patent utilizes liquid crystal technology which inherently requires thin-film structures. Liquid crystal layers are naturally thin and flexible, making them ideal for integration into vehicle windows. These thin-film antenna elements maintain window transparency while providing the necessary electromagnetic radiation capabilities, as liquid crystals can be deposited as thin layers on the window surface.
Solution Approach 2:
The liquid crystal molecules can change their orientation and physical state through electrical control, allowing the antenna elements to adjust their radiation characteristics without changing their physical thickness or structure. This parameter control enables the thin-film elements to maintain transparency while providing adaptive antenna functionality.
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
Enables adaptive antenna arrays that can be integrated into vehicle windows, providing high-resolution environmental sensing and communication capabilities while maintaining transparency and reducing manufacturing complexity.
Implementation Method 1
at least one first antenna element, which is configured to emit and/or receive electromagnetic radiation on the basis of a liquid crystal technology
Implementation Method 2
The liquid crystal technology allows for the antenna device to be transparent, for example, in the visible wave range
Data Source
AI summary
An antenna device for a transportation vehicle for transmitting and/or receiving electromagnetic radiation having at least one first antenna element to transmit and/or receive electromagnetic radiation based on liquid crystal technology and an electronic computing device to generate a control signal for the at least first antenna element. The antenna device has at least one second antenna element to transmit and/or receive electromagnetic radiation based on liquid crystal technology, wherein the first antenna element and/or the second antenna element is activated for transmission and/or receiving purposes based on the control signal. Also disclosed is a communication device, a radar device, an assistance system, and a method.