Meander Antenna Module Multi-Band Efficiency

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Solution Overview

Problem

Existing multiple mode antennas for mobile devices suffer from high battery power consumption due to inefficiency, poor impedance matching, and increased size, making them unsuitable for compact mobile devices.

Innovation Solution

A compact, high-performance antenna module is created by combining a meander-shaped antenna branch with a ground plane, using a dielectric substrate and additional branches to achieve multiple resonant frequencies without a matching network, improving impedance matching and efficiency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional multiple mode antennas are used, then the antenna can operate in multiple frequency bands, but the antenna consumes high battery power due to losses caused by lower efficiency and poor impedance matching

Engineering Contradiction:

Improvemultiple frequency band operationVSAvoidbattery power consumption

Core Design Contradiction:

Adaptability or versatilityVSLoss of energy

Solution Approach 1:

The antenna is divided into multiple separate branches (first branch, second branch, third branch, fourth branch) each optimized for specific frequency bands. This segmentation allows each branch to be independently tuned for optimal performance in its target band, improving overall efficiency and reducing energy losses compared to conventional single-structure multi-band antennas.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces a vertical dimension by positioning branches at different heights above the ground plane (different z-coordinates). This three-dimensional arrangement enables multiple resonant frequencies to be achieved without increasing the planar footprint, while maintaining good impedance matching and reducing energy losses through optimized current distribution.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

2Adaptability or versatility

If conventional multiple mode antennas are used, then the antenna can resonate at different frequencies, but the antenna takes more space than desired and required

Engineering Contradiction:

Improvemultiple resonant frequenciesVSAvoidantenna footprint area

Core Design Contradiction:

Adaptability or versatilityVSArea of stationary object

Solution Approach 1:

Multiple antenna branches are nested within a compact planar structure, with branches arranged to overlap and interleave in the xy-plane. This nesting approach allows four distinct branches to be accommodated in a small footprint area, achieving multiple resonant frequencies without requiring proportional increases in antenna size.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The patent utilizes the vertical dimension (z-axis) to differentiate antenna branches, positioning them at different heights above the ground plane. This enables multiple frequency operations within a compact planar footprint by exploiting the third dimension, effectively reducing the required antenna area while maintaining multi-band functionality.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Adaptability or versatility

If conventional multiple mode antennas are used, then the antenna can operate in multiple bands, but the impedance matching is poor leading to lower efficiency

Engineering Contradiction:

Improvemulti-band operation capabilityVSAvoidimpedance matching quality

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

Each antenna branch is designed with locally optimized geometric parameters (length, width, position) tailored to its specific frequency band requirements. The first branch is optimized for lower bands, while subsequent branches are tuned for higher bands, allowing excellent impedance matching in each band without compromising performance in other bands.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The antenna system is segmented into multiple independent branches, each responsible for specific frequency bands. This segmentation allows independent optimization of impedance matching for each branch, ensuring low return loss and high efficiency across all operating bands without the compromise inherent in conventional unified-structure multi-band antennas.

Inventive Principle:

Principle #1Segmentation

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 solution results in a more efficient antenna with improved return loss and operational frequency bands, achieving up to 65% increased efficiency and 4dB gain, enhancing conversation quality and data transfer speed.

Implementation Method 1

a meander-shaped antenna branch (5) connected to said feeding lines (3, 4) and attached to said substrate (2), and an additional resonant branch (6) connected to said feeding lines (3, 4) and attached to said substrate (2)

Methodology Applied

Scientific EffectResonance: Resonance

Data Source

PatentEP3097605B1Antenna module, antenna and mobile device comprising such an antenna module

Publication Date: 2018.11.14 THE ANTENNA COMPANY INT

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Figure 2~3
Figure 4A~4B

AI summary

The invention relates to an antenna module, in particular for use in a mobile device, such as a phone. The invention relates to an antenna, in particular for use in a mobile device, such as a phone, comprising at least one antenna module according to the invention. The invention also relates to a mobile device comprising at least one antenna according to the invention. The invention further relates to a method for manufacturing of an antenna according to the invention.