Antenna Array Layout to Avoid V2V Signal Null Points
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Solution Overview
Problem
Existing antenna array configurations for vehicle-to-vehicle communication do not effectively address the periodic level fluctuations due to road surface and lateral reflected waves in line of sight communication, leading to potential null points and reduced reception quality.
Innovation Solution
The proposed antenna array configuration involves arranging multiple antennas at odd integer multiples of half periods of level fluctuations in both horizontal and vertical directions to avoid simultaneous null points, optimizing the array for line of sight conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed antenna array configuration is used, then device complexity is reduced, but adaptability to different communication conditions (line of sight vs non-line of sight) deteriorates
Solution Approach 1:
The system transitions from a static antenna configuration to a dynamic one by implementing multiple pre-defined antenna array configurations that can be selected based on detected communication conditions. The control unit detects whether line of sight conditions exist and switches between configurations accordingly, providing adaptability without requiring complex real-time optimization algorithms
Solution Approach 2:
The antenna apparatus achieves multi-functionality by incorporating both a first antenna array configuration optimized for non-line of sight conditions and a second antenna array configuration optimized for line of sight conditions. This universal design allows the same antenna apparatus to effectively handle different propagation environments through configuration switching
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 enhances reception quality by ensuring that at least one antenna maintains high reception levels even when others experience null points, thereby improving communication reliability and coverage.
Implementation Method 1
periodic level fluctuations due to road surface and lateral reflected waves
Data Source
AI summary
An antenna apparatus is provided. The antenna apparatus includes an antenna array including a first plurality of antennas arranged by being shifted in a lateral direction by a distance of an odd integer multiple of a half period of a period of a level fluctuation depending on an antenna lateral position at a first distance that is predetermined as a distance between the antenna apparatus and an antenna apparatus of a communication partner. An antenna apparatus is provided. The antenna apparatus includes an antenna array including a first plurality of antennas arranged by being shifted in a height direction by a distance of an odd integer multiple of a half period of a period of a level fluctuation depending on an antenna height at a first distance that is predetermined as a distance between the antenna apparatus and an antenna apparatus of a communication partner.