Phased Antenna Beam Steering for Millimeter Wave Throughput
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Solution Overview
Problem
Existing electronic devices face challenges in supporting millimeter wave communications due to significant attenuation and line-of-sight requirements, which affect wireless performance and data throughput.
Innovation Solution
The implementation of phased antenna arrays with beam steering circuitry in electronic devices, which adjusts the direction of millimeter wave signals to optimize wireless performance by sweeping through different beam directions and gathering performance metric data to identify the best orientation for communication, ensuring higher data throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If beam steering circuitry sweeps through all possible beam directions before identifying the external device location, then complete directional coverage is achieved, but data throughput is reduced due to time spent scanning non-optimal directions
Solution Approach 1:
The patent applies preliminary action by using orientation sensors (accelerometer, gyroscope, magnetometer) to predict the external device's location before beam sweeping begins. This allows the system to pre-position the beam or prioritize scanning directions based on predicted device orientation and position, reducing the time spent scanning non-optimal directions while maintaining reliable directional coverage.
2Productivity
If millimeter wave communications are used to support high bandwidths, then data throughput capability is improved, but signal attenuation and line-of-sight requirements worsen wireless performance
Solution Approach 1:
The patent implements feedback by continuously monitoring wireless performance metrics (signal strength, error rates, throughput) during beam sweeping and communication operations. The control circuitry uses this feedback to dynamically adjust beam direction, select optimal frequency channels, and switch between millimeter wave and lower frequency bands when attenuation becomes excessive, thereby maintaining reliable wireless performance while utilizing high-bandwidth millimeter wave capabilities when conditions permit.
3Reliability
If beam steering is continuously adjusted to track moving external devices, then communication stability is maintained, but energy consumption increases
Solution Approach 1:
The patent applies periodic action by implementing intermittent beam adjustment rather than continuous tracking. The system periodically updates beam direction based on sensor data and communication performance metrics, adjusting the beam only when significant changes in device position or orientation are detected. This reduces energy consumption from continuous steering operations while maintaining communication stability through timely beam repositioning.
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 approach enhances average data throughput between electronic devices by optimizing millimeter wave signal directionality, reducing errors, and maintaining stable wireless connections even as devices move, compared to sweeping through all possible directions.
Implementation Method 1
The antennas may be organized in one or more phased antenna arrays. The phased antenna array may transmit and receive a beam of millimeter wave signals.
Implementation Method 2
Beam steering circuitry coupled to the phased antenna array may be adjusted to steer a direction (orientation) of the beam.
Implementation Method 3
The control circuitry may determine whether the beam of millimeter wave signals in the first direction satisfies predetermined wireless performance criteria (e.g., by comparing gathered wireless performance data to a predetermined range of acceptable values).
Data Source
AI summary
An electronic device may communicate with an external device and may include one or more phased antenna arrays that transmit and receive a beam of millimeter wave signals. Beam steering circuitry may be coupled to the phased antenna array and may be adjusted to steer a direction of the beam. Control circuitry may control the beam steering circuitry to sweep the beam of millimeter wave signals over multiple beam directions. The control circuitry may gather wireless performance data and may compare the wireless performance metric data at each beam direction in the sweep prior to gathering wireless performance metric data at other beam directions in the sweep. The first beam direction in the sweep may be selected based on an initial position of the external device and/or based on sensor data gathered by the control circuitry.