GNSS Multi-Antenna Layout for Lower Dilution of Precision
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Mobile devices with multiple antennas configured to receive multiple L-band signals simultaneously face increased dilution of precision and reduced signal reception due to overlapping nulls and lobes in the radiation patterns of the antennas.
Innovation Solution
Positioning multiple antennas with a 30-90 degree rotation to align nulls of one antenna with lobes of another, allowing for improved satellite tracking and reduced dilution of precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antennas are positioned to receive multiple L-band signals simultaneously, then signal reception capability is improved, but dilution of precision increases and satellite tracking capability deteriorates
Solution Approach 1:
The patent applies asymmetry by positioning multiple antennas at specific non-uniform angular separations (30-90 degrees) rather than symmetric arrangements. This asymmetric positioning optimizes the overlap between nulls from one antenna and lobes from another, improving satellite tracking capability while managing dilution of precision in multi-band L-band signal reception.
2Area of stationary object
If multiple antennas are positioned close together to maximize signal reception, then antenna space is reduced, but null-lobe overlap increases and satellite tracking deteriorates
Solution Approach 1:
The patent applies parameter changes by optimizing the angular separation parameter between antennas within the 30-90 degree range. This parameter optimization ensures that nulls from one antenna align with lobes from another, maximizing satellite tracking capability while maintaining compact antenna spacing suitable for mobile devices.
3Measurement precision
If antennas are positioned with specific angular separations to align nulls with lobes, then dilution of precision is reduced, but antenna configuration complexity increases
Solution Approach 1:
The patent applies local quality by optimizing the radiation pattern characteristics in specific angular directions. By positioning antennas at 30-90 degree separations, the nulls from one antenna locally align with lobes from another in critical directions, reducing dilution of precision for satellite tracking while maintaining manageable configuration complexity.
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 the number of satellites that can be tracked by a GNSS receiver, improving location accuracy and reducing precision errors, especially in challenging environments like urban canyons.
Implementation Method 1
the first antenna in communication with a global navigation satellite system (GNSS) receiver to receive first radio signals from at least four GNSS satellites and convert the first radio signals into first electronic signals
Data Source
AI summary
A mobile device may include a first antenna positioned on a first substrate, the first antenna in communication with a global navigation satellite system (GNSS) receiver to receive first radio signals from at least four GNSS satellites and convert the first radio signals into first electronic signals and a second antenna positioned on a second substrate between 30 degrees and 90 degrees from the first antenna. With such multi-band antenna design, arrangement, and positioning, the GNSS receiver may maximize the number of satellites it can track which results in improved geometry of tracked satellites, which reduces dilution and precision and improves location accuracy of the GNSS receiver.