Intelligent Reflect Array Switching for Low-Power Range Extension
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Solution Overview
Problem
Wireless communication systems face challenges due to unpredictable radio channels that distort and obscure data signals, leading to dropped calls or reduced data rates, especially when high-power wide-band signals are not feasible, and existing methods like beamforming and pre-distortion fail.
Innovation Solution
An Intelligent Reflect Array (IRA) with an array of independently controllable surfaces that manipulate radio frequency signals through reflection, refraction, absorption, and polarization, using a switch and delay elements to form optimal radio channels, reducing interference and maintaining signal integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If high power wide band data signals are used, then penetration and range are improved, but power consumption and system complexity increase
Solution Approach 1:
The patent introduces an Intelligent Reflect Array as an intermediary component between the transmitter and receiver. This array reflects and redirects radio frequency signals to extend communication range without requiring the transmitter to increase its power output, thus solving the contradiction between range extension and power consumption
2Reliability
If beamforming and pre-distortion methods are employed, then signal quality is maintained, but device complexity and computational requirements increase
Solution Approach 1:
The patent replaces complex electronic signal processing methods (beamforming and pre-distortion) with a passive mechanical-like reflection system. The Intelligent Reflect Array uses physically adjustable reflective surfaces to direct signals, substituting computational complexity with physical signal manipulation through reflection geometry
3Length of moving object
If repeaters are used to extend range, then signal coverage is improved, but additional delay is added and security is compromised
Solution Approach 1:
The patent converts the typically harmful effect of radio signal reflection (which causes multipath interference) into a beneficial mechanism. By intentionally controlling reflection surfaces, the system extends range using reflected signals without the delay and security issues associated with active repeaters that retransmit signals
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
The IRA enhances communication by improving signal reception, extending range, avoiding obstacles, and managing beamforming without adding delay or power consumption, offering greater control over the wireless environment.
Implementation Method 1
an antenna array includes an array of patch antennas
Implementation Method 2
a plurality of delay elements associated with each patch antenna
Implementation Method 3
a switch for each patch antenna having multiple positions. Each position is configured to connect one delay element of a respective plurality of delay elements to a respective patch antenna
Data Source
AI summary
Embodiments of a method and apparatus for an intelligent reflect array are disclosed. In an example, an antenna array includes an array of patch antennas, a plurality of delay elements associated with each patch antenna, and a switch for each patch antenna having multiple positions. Each position is configured to connect one delay element of a respective plurality of delay elements to a respective patch antenna. A controller controls the position of each switch.