Millimeter-Wave Antenna Gain Pattern Separation for Accurate Selection
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Solution Overview
Problem
Wireless communication devices face challenges in effectively managing gain pattern overlap between multiple antennas, particularly at millimeter-wave frequencies, leading to confusion in antenna selection and degradation of throughput and latency performance.
Innovation Solution
Implementing an electrically-conductive device, such as a frequency-selective surface, to inhibit gain patterns of one antenna near the boresight of another, thereby increasing the gain differential between antennas and improving antenna selection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antennas are used to support different communication frequencies and protocols, then communication versatility and capability are improved, but gain pattern overlap occurs causing antenna selection confusion and reduced throughput
Solution Approach 1:
The patent divides the gain pattern coverage space by introducing an electrically-conductive device that creates distinct angular regions. The first antenna covers a first range of angles while the second antenna covers a second range of angles, segmenting the overall coverage to eliminate overlap and selection confusion.
Solution Approach 2:
The electrically-conductive device modifies the local gain pattern characteristics of the first antenna in specific angular regions. By adjusting the gain differential in different directions, the patent creates localized gain enhancements that ensure one antenna always outperforms the other in each angular sector.
2Adaptability or versatility
If multiple antennas with different boresight directions are used to cover different angles, then angular coverage is improved, but gain pattern overlap causes confusion in antenna selection
Solution Approach 1:
The electrically-conductive device is positioned and configured in advance to preemptively prevent gain pattern overlap. By strategically placing the conductive element, the patent ensures that the gain patterns of multiple antennas are naturally separated before selection confusion can occur.
Solution Approach 2:
The electrically-conductive device acts as an intermediary element between multiple antennas. It modifies the electromagnetic environment to create clear separation between gain patterns, enabling the selection mechanism to accurately determine which antenna should be used for a given angle without confusion.
3Measurement precision
If gain pattern overlap is reduced by adding an electrically-conductive device, then antenna selection accuracy is improved, but device complexity increases
Solution Approach 1:
The electrically-conductive device serves multiple functions: it acts as a reflector to shape gain patterns, provides structural support, and may serve as part of the antenna mounting mechanism. By combining multiple functions into a single element, the patent reduces overall device complexity despite adding functionality.
Solution Approach 2:
The patent optimizes parameters such as the conductive device's position, size, shape, and electrical properties to achieve the desired gain pattern separation. By carefully tuning these parameters, the patent achieves effective overlap reduction with a relatively simple and compact structure.
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
Enhances antenna selection precision and reduces latency by widening the gain differential between antennas, thus improving communication latency, accuracy, and throughput.
Implementation Method 1
an electrically-conductive device, comprising at least one conductive surface; where the first antenna, in combination with the electrically-conductive device, is configured to provide a third gain pattern that has a first gain differential relative to the second gain pattern
Data Source
AI summary
A wireless communication device includes: a first antenna configured to provide a first gain pattern at a millimeter-wave radio frequency and having a first boresight direction; a second antenna configured to provide a second gain pattern at the millimeter-wave radio frequency and having a second boresight direction that is different from the first boresight direction; and an electrically-conductive device; where the first antenna, in combination with the electrically-conductive device, is configured to provide a third gain pattern that has a first gain differential relative to the second gain pattern that is greater than a second gain differential between the first gain pattern and the second gain pattern over a range of angles relative to the wireless communication device.