Wiring Substrate Support Body for Antenna Conductor Stability

Solution Overview

Problem

Conventional wiring substrates for antennas face challenges in maintaining a stable distance between antenna conductors for efficient electromagnetic wave transmission and reception, leading to potential deformation under thermal stresses and reduced electromagnetic radiation characteristics.

Innovation Solution

The proposed wiring substrate consists of a first substrate, a second substrate with a frame body and support body, and a third substrate, where the support body includes direction-changing parts that disperse stresses and prevent contact between the substrates, maintaining a constant distance between antenna conductors and enhancing rigidity and airtightness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If a conventional wiring substrate structure is used, then the device can be manufactured with standard processes, but the substrate deforms under thermal stresses and the distance between antenna conductors becomes unstable

Engineering Contradiction:

Improvedistance between antenna conductorsVSAvoidresistance to thermal stress deformation

Core Design Contradiction:

Stability of the object's compositionVSStrength

Solution Approach 1:

The support body is divided into multiple segments including a first support part, a second support part, and a connecting part. Each segment is positioned at specific locations (center, corner, and connecting regions) to independently support different areas of the antenna conductor, thereby maintaining stable distances between conductors while distributing thermal stress across multiple support points

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The support body exhibits non-uniform thickness distribution with thicker regions at the first support part (center), second support part (corner), and connecting part, and thinner regions in between. This local variation in thickness provides enhanced mechanical strength and thermal stress resistance at critical locations while maintaining overall structural flexibility and electromagnetic performance

Inventive Principle:

Principle #3Local quality

2Strength

If the substrate structure is reinforced to prevent deformation, then thermal stress resistance improves, but the electromagnetic radiation characteristics deteriorate

Engineering Contradiction:

Improveresistance to thermal stress deformationVSAvoidelectromagnetic radiation characteristics

Core Design Contradiction:

StrengthVSReliability

Solution Approach 1:

The support body is divided into multiple segments including a first support part, a second support part, and a connecting part. Each segment is positioned at specific locations (center, corner, and connecting regions) to independently support different areas of the antenna conductor, thereby maintaining stable distances between conductors while distributing thermal stress across multiple support points

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The support body exhibits non-uniform thickness distribution with thicker regions at the first support part (center), second support part (corner), and connecting part, and thinner regions in between. This local variation in thickness provides enhanced mechanical strength and thermal stress resistance at critical locations while maintaining overall structural flexibility and electromagnetic performance

Inventive Principle:

Principle #3Local quality

3Productivity

If miniaturization is implemented to reduce device size, then productivity increases, but maintaining stable antenna conductor distances becomes difficult

Engineering Contradiction:

Improvedevice miniaturizationVSAvoiddistance between antenna conductors

Core Design Contradiction:

ProductivityVSStability of the object's composition

Solution Approach 1:

The support body is divided into multiple segments including a first support part, a second support part, and a connecting part. Each segment is positioned at specific locations (center, corner, and connecting regions) to independently support different areas of the antenna conductor, thereby maintaining stable distances between conductors while distributing thermal stress across multiple support points

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The support body exhibits non-uniform thickness distribution with thicker regions at the first support part (center), second support part (corner), and connecting part, and thinner regions in between. This local variation in thickness provides enhanced mechanical strength and thermal stress resistance at critical locations while maintaining overall structural flexibility and electromagnetic performance

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS11464104B2Wiring substrate

Publication Date: 2022.10.04 KYOCERA CORP

AI summary

A wiring substrate comprises a first substrate, a second substrate which includes a frame body located on the outer circumferential edge of the first substrate, at least two connecting parts connected to the inner circumferential part of the frame body, and a support body connecting the two connecting parts to each other, and a third substrate located on a surface of the second substrate opposite the first substrate. The support body includes a direction changing part between the two connecting parts and does not include an annular structure where the direction changing part is included on the circumference.