Antenna Angle Adjustment via Electric Field Wave Discrimination

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Solution Overview

Problem

Existing antenna angle adjustment methods cannot reliably distinguish between direct and reflected waves, leading to potential misalignment of antennas and unstable communication.

Innovation Solution

An antenna angle adjustment system that calculates and measures electric field strength to determine if a direct wave is being received, using electric field strength calculation and measurement means, and comparison means to adjust the antenna angle for optimal direct wave reception.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If antenna angle is adjusted based on received power maximum, then received power is maximized, but the antenna may be misaligned to receive reflected waves instead of direct waves

Engineering Contradiction:

Improvecommunication stabilityVSAvoidwave type discrimination accuracy

Core Design Contradiction:

ReliabilityVSMeasurement precision

Solution Approach 1:

The patent introduces a reflected wave component calculation mechanism as an intermediary to distinguish between direct and reflected waves. By calculating the expected reflected wave component based on distance and comparing it with the actual received signal, the system can identify whether the maximum received power comes from a direct wave or reflected wave, thereby preventing misalignment

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces the simple received power measurement approach with an electromagnetic field-based analysis system. By using electric field strength calculation and comparison, the system can differentiate between direct and reflected waves more accurately than simple power measurement, substituting a more sophisticated electromagnetic analysis mechanism

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Ease of operation

If simple received power measurement is used for antenna alignment, then the adjustment process is simple, but the alignment accuracy is insufficient to distinguish direct and reflected waves

Engineering Contradiction:

Improveantenna adjustment simplicityVSAvoidwave type detection accuracy

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The patent performs preliminary calculation of the reflected wave component based on distance before final antenna alignment. By pre-calculating what the reflected wave strength should be at the given distance, the system can compare this with actual measurements and make more informed alignment decisions, adding a preparatory analysis step

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent uses partial information (distance-based reflected wave estimation) rather than complete information to achieve practical alignment. By using the distance to estimate reflected wave characteristics and comparing with received signals, the system achieves sufficient discrimination accuracy without requiring complex complete field mapping

Inventive Principle:

Principle #16Partial or excessive 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

The system ensures accurate adjustment of antenna angles for reliable direct wave reception, improving communication stability by distinguishing between direct and reflected waves.

Implementation Method 1

an antenna 210 connected to the adjustment device 200 and another antenna 310 connected to the other adjustment device 300 respectively transmit and receive radio waves to and from each other

Methodology Applied

Scientific EffectElectromagnetic radiation: Electromagnetic Induction

Implementation Method 2

a value of electric field strength of the radio wave, received by the antenna 210, and a direction in which the radio wave is received

Methodology Applied

Scientific EffectElectromagnetic field detection: Electromagnetic Induction

Data Source

PatentUS11063351B2Antenna angle adjustment device, antenna angle adjustment method, and communications device

Publication Date: 2021.07.13 NEC CORP

AI summary

Provided are an antenna angle adjustment device, an antenna angle adjustment system, an antenna angle adjustment method, and a communications device, whereby the angle of an antenna can be adjusted to a direction in which direct waves can be more reliably received. A direction information generation unit 41 generates direction information indicating a direction of one antenna from another antenna. A range information generation unit 42 generates range information indicating a range of a main beam of the another antenna. A determination unit 43 determines, based on the range information and the direction information, whether or not the one antenna is in a range indicated by the range information.