Multi-Band Antenna Layout for Radiation and Impedance Isolation

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Solution Overview

Problem

Existing antenna devices face challenges in implementing radiation properties across multiple frequency bands without interference between high-frequency and low-frequency antennas, leading to impaired signaling and impedance issues.

Innovation Solution

The antenna device incorporates a dielectric layer with a first antenna unit for vertical radiation and a second antenna unit for omni-directional radiation, featuring radiators with sequential width decreases and a mesh structure, along with a ground layer and dummy mesh patterns to enhance radiation reliability and multi-band signal transmission.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If high frequency antenna and low frequency antenna are disposed adjacent to each other in a single device, then multi-band radiation capability is achieved, but radiation and impedance properties of the different antennas collide with each other causing signaling issues

Engineering Contradiction:

Improvemulti-band radiation capabilityVSAvoidradiation and impedance properties

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The antenna device is divided into separate first and second antenna units with distinct functional regions. The first antenna unit is positioned in a first region for high-frequency operation while the second antenna unit is positioned in a second region for low-frequency operation, physically segmenting the multi-band functionality to prevent interference between different frequency bands

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent utilizes spatial dimensionality by disposing the first and second antenna units at different positions and orientations within the device. The first antenna unit extends in a first direction while the second antenna unit extends in a second direction different from the first direction, achieving multi-band capability through three-dimensional spatial arrangement rather than simple planar adjacency

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Device complexity

If multiple antennas are integrated in a single device, then device complexity is reduced, but signaling in multiple directions cannot be implemented

Engineering Contradiction:

Improveantenna integrationVSAvoidsignaling in multiple directions

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The first and second antenna units are configured with asymmetric orientations where the first antenna unit extends in a first direction and the second antenna unit extends in a second direction different from the first direction. This asymmetric spatial arrangement enables the integrated device to signal in multiple directions simultaneously, overcoming the limitation of conventional symmetric or co-linear antenna configurations

Inventive Principle:

Principle #4Asymmetry

3Adaptability or versatility

If broadband antenna is implemented, then frequency band coverage is improved, but radiation reliability is not sufficient

Engineering Contradiction:

Improvefrequency band coverageVSAvoidradiation reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

Rather than using a single broadband antenna that compromises radiation reliability, the patent segments the antenna system into specialized first and second antenna units optimized for different frequency bands. Each unit is independently configured to maintain high radiation reliability in its designated band while collectively achieving broad frequency coverage

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Each antenna unit is locally optimized for its specific frequency band with dedicated structural characteristics. The first antenna unit has properties optimized for high-frequency operation while the second antenna unit has properties optimized for low-frequency operation, ensuring that each region performs its specific function with high reliability rather than compromising overall performance for broad coverage

Inventive Principle:

Principle #3Local quality

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 enables stable high-frequency signal transmission and reception inside a target object while maintaining omni-directional connectivity to external communication networks, effectively addressing interference and impedance issues across multiple frequency bands.

Implementation Method 1

a first antenna unit disposed on a top surface of the dielectric layer, the first antenna unit including a first radiator providing a vertical radiation from the top surface of the dielectric layer

Methodology Applied

Scientific EffectElectromagnetic radiation: Electromagnetic Induction

Implementation Method 2

a second antenna unit spaced apart from the first antenna unit on a plan view, the second antenna unit including a second radiator providing an omni-directional radiation

Methodology Applied

Scientific EffectElectromagnetic radiation: Electromagnetic Induction

Data Source

PatentUS20230402755A1Antenna device

Publication Date: 2023.12.14 DONGWOO FINE CHEM CO LTD

AI summary

An antenna device according to embodiments includes a dielectric layer having a central portion and a peripheral portion, a first antenna unit disposed on a top surface of the dielectric layer and including a first radiator providing a vertical radiation from the top surface of the dielectric layer, and a second antenna unit spaced apart from the first antenna unit on a plan view and comprising a second radiator providing an omni-directional radiation.