GPS Antenna Frequency Adjustment via Skeletal Resin Frame

Solution Overview

Problem

Conventional GPS antenna structures in compact portable devices face challenges in maintaining reception sensitivity while minimizing power loss for radio waves, often resulting in reduced radiation efficiency due to frequency adjustment methods that impair electric power consumption.

Innovation Solution

The use of a skeletal resin frame with adjustable blocks between the conductor element and ground conductor portion allows for frequency adjustment without cutting the conductor element, maintaining good reception sensitivity and radiation efficiency by selectively cutting off blocks to match the desired resonance frequency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a notch or slit is provided on the rectangular conductor plate to adjust the reception frequency, then the resonance frequency can be adjusted, but the radiation area is reduced and power consumption increases

Engineering Contradiction:

Improvereception frequency adjustmentVSAvoidpower loss for radio waves

Core Design Contradiction:

Adaptability or versatilityVSLoss of energy

Solution Approach 1:

The frequency adjustment function is segmented from the conductor plate itself and transferred to a separate resin frame component. The resin frame is divided into multiple blocks that can be selectively removed to adjust frequency, while the conductor plate remains intact to maintain radiation efficiency.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A resin frame is introduced as an intermediary component between the conductor plate and the ground conductor portion. This resin frame serves as the frequency adjustment mechanism, eliminating the need to modify the conductor plate directly and thus preserving its radiation capabilities.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If the conductor plate area is reduced by cutting out a notch for frequency adjustment, then the resonance frequency can be tuned, but the radiation efficiency decreases

Engineering Contradiction:

Improveresonance frequency tuningVSAvoidreception sensitivity

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The frequency adjustment function is segmented from the conductor plate itself and transferred to a separate resin frame component. The resin frame is divided into multiple blocks that can be selectively removed to adjust frequency, while the conductor plate remains intact to maintain radiation efficiency.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A resin frame is introduced as an intermediary component between the conductor plate and the ground conductor portion. This resin frame serves as the frequency adjustment mechanism, eliminating the need to modify the conductor plate directly and thus preserving its radiation capabilities.

Inventive Principle:

Principle #24Intermediary (Mediator)

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 enables a compact GPS antenna structure with stable reception performance and reduced power consumption, as the antenna maintains high radiation efficiency and sensitivity without impairing electric power for radio waves.

Implementation Method 1

a skeletal resin frame for frequency adjustment disposed between the conductor element and the ground conductor portion

Methodology Applied

Scientific EffectResonance: Resonance

Data Source

PatentUS10673143B2Antenna structure, portable electronic device, and frequency adjustment method of antenna structure

Publication Date: 2020.06.02 SEIKO EPSON CORP

AI summary

An antenna structure (GPS antenna) includes a plate-shaped conductor element (antenna electrode), a plate-shaped element (circuit board) including a ground conductor portion disposed so as to overlap the conductor element in plan view, and a skeletal resin frame for frequency adjustment disposed between the conductor element and the ground conductor portion.