Multi-Polarization Antenna for Object Localization
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Solution Overview
Problem
Existing electromagnetic high-frequency signal-based measuring devices struggle to distinguish objects from wall structures and inhomogeneities due to significant influence from surrounding materials, leading to difficulties in locating objects enclosed in a medium.
Innovation Solution
A hand-held measuring device with a multi-antenna system featuring antenna elements with rotated planes of polarization, allowing for differential signal interaction with anisotropic objects and enabling effective separation of object signals from background reflections through differential signal processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single antenna element is used for electromagnetic signal transmission, then the device structure is simple, but the ability to distinguish objects from wall structures is poor due to significant influence from surrounding materials
Solution Approach 1:
The single antenna element is segmented into multiple antenna elements (at least two) with different polarization planes. Each antenna element processes signals independently through separate evaluation channels, allowing the system to distinguish object reflections from wall structure reflections by comparing signals across different polarization planes, thereby improving measurement precision without excessive complexity increase
Solution Approach 2:
The invention introduces a new dimension of polarization plane orientation to the antenna system. By arranging antenna elements in at least two different polarization planes (e.g., horizontal and vertical), the system gains additional measurement dimensions that enable differentiation between objects and wall structures based on their distinct electromagnetic reflection characteristics across polarization planes
2Reliability
If antenna elements are arranged in multiple polarization planes, then object signals can be separated from background reflections, but the device structure becomes more complex
Solution Approach 1:
The antenna system is segmented into multiple independent antenna elements, each oriented in different polarization planes, with each element connected to its own evaluation channel. This segmentation allows independent signal processing for each polarization plane, improving reliability of object signal separation while maintaining manageable structural complexity through modular design
Solution Approach 2:
Each antenna element is designed with specific local quality characteristics - different polarization orientations tailored to detect specific reflection patterns. The evaluation channels are also optimized locally to process signals from corresponding polarization planes, enabling reliable differentiation between objects and wall structures through localized signal characteristics
3Measurement precision
If electromagnetic signals are transmitted in a single polarization plane, then the transmission system is simple, but the interaction with anisotropic objects is insufficient for accurate localization
Solution Approach 1:
The system transmits electromagnetic signals in multiple polarization planes simultaneously, adding the polarization plane dimension to the measurement process. This enables detection of anisotropic objects that exhibit different reflection characteristics across polarization planes, improving localization precision through multi-dimensional signal analysis
Solution Approach 2:
The signal processing system is segmented into multiple independent evaluation channels, each processing signals from a specific polarization plane. This segmentation allows the system to analyze interaction patterns between transmitted signals and anisotropic objects across different polarization planes, extracting precise localization information through comparative analysis
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 device enhances object localization by providing a permanent signal difference between measurement channels, reducing overdriving from wall reflections and improving signal dynamics, allowing for precise object positioning and detection in complex environments.
Implementation Method 1
The measuring device has a high-frequency sensor with at least two antenna elements, with the planes of polarization of electromagnetic waves emitted or received by these antenna elements being rotated in relation to one another
Implementation Method 2
at least two antenna elements, with the planes of polarization of electromagnetic waves emitted or received by these antenna elements being rotated in relation to one another
Implementation Method 3
so that the measurement signal of such a sensor has anisotropic, i.e. e.g. elongate objects interacts with different strengths
Data Source
Figure 1~2
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AI summary
The invention relates to a measuring device, in particular a hand-held measuring device for locating objects enclosed in a medium, using high-frequency electromagnetic signals. Said device comprises a housing (82) and at least one high-frequency sensor, which is located in the housing and has a first antenna assembly (10) containing at least one first antenna element (12), the latter preferably emitting and/or receiving signals on a first polarisation plane. According to the invention, the antenna assembly (10) has at least one additional antenna element (14), whose polarisation plane is rotated in relation to the polarisation plane of the first antenna element (12). The invention also relates to a method for locating objects enclosed in a medium, using high-frequency electromagnetic signals, in particular a method for operating a hand-held locating device comprising a plurality of antenna elements (12,14;11,13), in which the measuring signal can be transmitted and/or received on different polarisation planes.