Antenna Selection via Magnetic Field Detection

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Solution Overview

Problem

Existing devices with multiple antennas face performance issues and battery life depletion due to the need to frequently switch antennas based on orientation and location changes, which is inefficient and power-consuming.

Innovation Solution

A method for automatically selecting an optimal antenna based on the device's location, using a magnetic field to determine the location and referencing historical or new performance data to choose the antenna with the best signal quality and battery life optimization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the device frequently switches antennas based on orientation and location changes, then the signal quality is improved, but the battery life is depleted

Engineering Contradiction:

Improvesignal qualityVSAvoidbattery life

Core Design Contradiction:

ReliabilityVSDuration of action of moving object

Solution Approach 1:

The system performs preliminary actions by determining device location and storing historical performance data for multiple antennas at different locations before actual communication occurs. When the device is at a particular location, the system has already pre-determined which antenna would perform best based on stored historical data, eliminating the need for frequent real-time switching decisions and reducing power consumption.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent replaces the mechanical switching system with a field-based detection system. Instead of physically switching antennas based on orientation sensors, the system uses magnetic field detection to determine device location and automatically selects the optimal antenna based on stored performance data associated with that location, substituting mechanical switching with field-based intelligent selection.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Area of stationary object

If the device is configured to use two antennas simultaneously, then the coverage area is improved, but the performance of individual antennas deteriorates due to close positioning

Engineering Contradiction:

Improvecoverage areaVSAvoidantenna performance

Core Design Contradiction:

Area of stationary objectVSReliability

Solution Approach 1:

The system segments the antenna selection process by location. Instead of using multiple antennas simultaneously which causes interference, the device determines its location using magnetic field detection and selects a single optimal antenna based on historical performance data for that specific location. This segmentation approach allows the device to achieve effective coverage by selecting the right antenna for each location rather than relying on simultaneous multi-antenna operation.

Inventive Principle:

Principle #1Segmentation

3Reliability

If the device switches antennas each time a re-transmission occurs, then the communication reliability is improved, but the power consumption increases

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system performs preliminary actions by storing historical performance data for multiple antennas at different locations before actual communication occurs. When communication is needed, the device determines its location and retrieves the pre-stored optimal antenna information, eliminating the need for repeated switching during re-transmissions and reducing power consumption while maintaining communication reliability.

Inventive Principle:

Principle #10Preliminary action

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 improves battery life by eliminating the need for frequent antenna switching and reduces power consumption by automatically selecting the best antenna for each location, thereby enhancing device performance and reducing maintenance needs.

Implementation Method 1

The device may receive a magnetic field. A strength of the magnetic field may be determined. Based on the strength of the magnetic field, a location of the device may be determined.

Methodology Applied

Scientific EffectMagnetic field detection: Magnetic Field

Data Source

PatentUS12278677B2Methods and apparatus for selecting an antenna

Publication Date: 2025.04.15 COMCAST CABLE COMM LLC

AI summary

A device including a plurality of antennas may sense or receive data related to a magnetic field. A strength of the magnetic field may be determined. Based on the strength of the magnetic field, a location or orientation of the device may be determined. The location of the device may be used to select an antenna from the plurality of antennas for transmitting data from the device or receiving data at the device. If the location of the device is associated with historical performance data, the historical performance data may be used to select an antenna from the plurality of antennas.