Instrument Panel Antenna Integration to Eliminate Coaxial Signal Loss

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Solution Overview

Problem

Existing wireless communication systems in vehicles face inefficiencies due to increased costs and signal loss caused by the use of coaxial cables to connect antennas and communication modules.

Innovation Solution

The wireless communication apparatus integrates the communication module and antenna within the same housing, mounted inside the vehicle's instrument panel, minimizing cable length and optimizing antenna placement for improved signal transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If coaxial cables are used to connect antennas and communication modules, then connection reliability is improved, but signal loss increases and manufacturing cost increases

Engineering Contradiction:

Improveconnection reliabilityVSAvoidsignal loss

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent merges the antenna and communication module into a single integrated unit, eliminating the need for coaxial cables to connect them. This integration removes the cable-related signal loss while maintaining reliable communication through direct internal connection, thus resolving the contradiction between connection reliability and signal loss.

Inventive Principle:

Principle #5Merging (Combining)

2Reliability

If coaxial cables are used to connect antennas and communication modules, then connection reliability is improved, but manufacturing cost increases

Engineering Contradiction:

Improveconnection reliabilityVSAvoidmanufacturing cost

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

By combining the antenna and communication module into one integrated component, the patent eliminates the need for separate coaxial cables and connectors, thereby reducing part count and assembly complexity. This integration lowers manufacturing costs while maintaining connection reliability through direct internal connections.

Inventive Principle:

Principle #5Merging (Combining)

3Reliability

If antenna is placed远离 communication module, then signal transmission is improved, but cable length increases and cost increases

Engineering Contradiction:

Improvesignal transmissionVSAvoidcable length

Core Design Contradiction:

ReliabilityVSLength of stationary object

Solution Approach 1:

The patent resolves this contradiction by merging the antenna and communication module into the same housing, making the effective cable length zero. This eliminates cable-related signal transmission issues entirely while allowing the antenna to be optimally positioned within the instrument panel for both signal transmission and cost reduction.

Inventive Principle:

Principle #5Merging (Combining)

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 wireless signal transmission efficiency by reducing signal loss and eliminating the need for additional cables and amplifiers, thereby lowering manufacturing costs.

Implementation Method 1

a first antenna connected to the communication module

Methodology Applied

Scientific EffectElectromagnetic radiation: Electromagnetic Induction

Data Source

PatentUS12244746B2Wireless communication apparatus and vehicle

Publication Date: 2025.03.04 TOYOTA JIDOSHA KK

AI summary

A wireless communication apparatus comprises a communication module configured to perform wireless communication with a network outside a vehicle; and a first antenna connected to the communication module, wherein the wireless communication apparatus is mounted inside an instrument panel of the vehicle.