Flexible Array Antenna Module for Multi-Directional mmWave Beams
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Solution Overview
Problem
There is a lack of a specific solution for antennas and radio frequency integrated chips (RFIC) in electronic devices to transmit high-resolution images wirelessly, particularly when the device is mounted on a wall or table, and there is a need for a configuration that supports millimeter wave band transmission with enhanced antenna directivity and broadband capabilities.
Innovation Solution
An antenna module with array antennas arranged on flexible substrates, capable of forming beams in multiple directions, including horizontal and vertical polarizations, and utilizing multiple-input-multiple-output (MIMO) technology to enhance data transmission and reception, while being ultra-thin and space-efficient.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional antenna structure is used in electronic devices, then the device structure is simple, but the wireless transmission capability for high-resolution images is insufficient
Solution Approach 1:
The antenna is divided into multiple antenna elements arranged in arrays, with each element contributing to the overall wireless transmission capability. This segmentation enables beamforming and MIMO operations, significantly enhancing productivity for high-resolution image transmission while managing complexity through modular design
Solution Approach 2:
The patent transitions from conventional two-dimensional antenna arrangements to three-dimensional configurations, including bent flexible substrates and multi-layer structures. This dimensional change enables enhanced radiation patterns and polarization diversity, improving wireless transmission capability without proportionally increasing device complexity
2Speed
If millimeter wave band transmission is implemented, then data transmission speed is improved, but antenna directivity requirements become more stringent
Solution Approach 1:
Multiple antenna elements are combined into arrays with precise phase and amplitude control, enabling beamforming that achieves the required directivity for millimeter wave transmission. The merging of multiple elements creates constructive interference in desired directions while suppressing sidelobes, meeting directivity precision requirements
Solution Approach 2:
The antenna system employs dynamic beam steering capabilities through electronic phase control, allowing the beam direction to be adjusted in real-time. This dynamic adaptation enables the system to maintain optimal directivity precision across varying transmission conditions and angles, supporting high-speed millimeter wave communication
3Productivity
If broadband antenna technology is used, then data transmission capacity is enhanced, but polarization interference increases
Solution Approach 1:
Different antenna elements in the array are configured with specific polarization orientations (horizontal and vertical) to handle different signal components. This local quality differentiation allows the system to exploit polarization diversity for enhanced capacity while managing interference through selective polarization filtering and orthogonal signal separation techniques
Data Source
AI summary
An electronic device having an antenna, according to one embodiment, is provided. An antenna module of the electronic device is arranged on a side surface or at a display of the electronic device and can be configured to radiate a specific-directional polarized signal in the front or side direction of the electronic device. The antenna module comprises: a first array antenna arranged in a first region of a flexible substrate to radiate a signal of a millimeter wave band, and configured to form a beam in a first direction; and a second array antenna arranged in a second region adjacent to the first region, and configured to form a beam in a second direction, wherein the first region of the flexible substrate can be formed to be bent at a predetermined angle with respect to the second region.