Embedded Dielectric Antenna Array for Dynamic Beam Steering
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Solution Overview
Problem
Traditional antenna arrays in mobile devices occupy significant space and fail to dynamically adjust signal reception and transmission directions, leading to decreased communication quality when the device is moved or rotated.
Innovation Solution
The integration of a dielectric substrate with an antenna array comprising antennas of different polarizations, embedded within the substrate, and a transceiver that can adjust the main beam direction, allowing for improved isolation and dynamic signal adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a traditional antenna array is used for wireless transmission, then signal transmission capability is provided, but the occupied space in the mobile device is significant
Solution Approach 1:
The patent transitions from traditional planar antenna arrays to a three-dimensional folded configuration. The antenna elements are arranged in multiple layers and folded structures that utilize the Z-direction (thickness dimension) of the mobile device, thereby reducing the footprint area while maintaining adequate element spacing for signal transmission.
Solution Approach 2:
The antenna array employs a nested or folded structure where antenna elements are arranged in multiple nested layers within the limited space of the mobile device. This allows multiple antenna elements to coexist in a compact volume without significant mutual interference.
2Adaptability or versatility
If a traditional fixed antenna array is used, then simple structure is maintained, but the device cannot dynamically receive and transmit signals at different directions when moved or rotated
Solution Approach 1:
The patent implements a reconfigurable antenna array where the electrical characteristics can be dynamically adjusted. Phase shifters and switching networks allow the beam direction and polarization to be changed in real-time based on the device orientation and communication requirements, enabling adaptive performance without mechanical movement.
Solution Approach 2:
The antenna array utilizes electronically controllable parameters such as phase difference, amplitude weighting, and polarization angle to adapt its radiation pattern. By changing these parameters through control circuits, the antenna system can dynamically steer beams and adjust to different transmission directions without physical reconfiguration.
3Reliability
If antennas with same polarization are used in the array, then manufacturing is simplified, but signal isolation between antennas is reduced
Solution Approach 1:
The patent employs antennas with different local polarizations at different positions within the array. Specifically, alternating antenna elements have orthogonal polarizations (e.g., horizontal and vertical), which creates spatial diversity and improves signal isolation. This localized variation in polarization characteristics enhances overall system performance while remaining manufacturable.
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 configuration reduces the occupied space, enhances signal isolation, and maintains communication quality even when the device is moved or rotated, supporting efficient wireless transmission across a wide frequency band.
Implementation Method 1
an antenna array, at least comprising: a first antenna, embedded in the dielectric substrate; and a second antenna, embedded in the dielectric substrate, wherein the first antenna and the second antenna have different polarizations
Data Source
AI summary
A mobile device at least includes a dielectric substrate, an antenna array, and a transceiver. The antenna array at least includes a first antenna and a second antenna. The first and second antennas are both embedded in the dielectric substrate. The first and second antennas have different polarizations. The transceiver is coupled to the antenna array so as to transmit or receive a signal. The polarization of the antenna array may be dynamically adjusted by controlling a phase difference between the first antenna and the second antenna.