Open-Ended Resonator Configuration for Inter-Substrate Signal Transmission

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Solution Overview

Problem

Existing signal transmission devices with resonators on different substrates face significant variations in coupling coefficient and resonance frequency due to changes in the air layer thickness between substrates, leading to unstable pass frequency and bandwidth.

Innovation Solution

The device employs a configuration where open-ended resonators on adjacent substrates are arranged such that their open ends and central portions face each other, ensuring a uniform electric field distribution and minimizing resonance frequency variations, even with changes in inter-substrate distance, by using a hybrid resonance mode that differentiates resonance frequencies when coupled or uncoupled.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If resonators on different substrates are electromagnetically coupled to each other, then signal transmission is enabled, but coupling coefficient and resonance frequency significantly change due to air layer thickness variation

Engineering Contradiction:

Improvestability of pass frequency and bandwidthVSAvoidvariation in coupling coefficient and resonance frequency

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent applies asymmetry by configuring open-ended resonators such that their open ends and central portions face each other across substrates. This asymmetric arrangement creates a specific electromagnetic field distribution pattern where the field concentration at open ends provides strong coupling while the central portion alignment maintains frequency stability, resolving the contradiction between enabling signal transmission and preventing frequency variation.

Inventive Principle:

Principle #4Asymmetry

Solution Approach 2:

The patent utilizes parameter changes by exploiting the electromagnetic resonance characteristics of open-ended resonators. By adjusting the resonance mode parameters and utilizing the hybrid resonance effect between coupled resonators, the system achieves stable pass frequency and bandwidth despite variations in air layer thickness, as the resonance parameters are optimized to be less sensitive to distance changes.

Inventive Principle:

Principle #35Parameter changes

2Stability of the object's composition

If open-ended resonators are arranged with open ends facing each other, then electric field distribution becomes uniform, but device complexity increases

Engineering Contradiction:

Improveuniformity of electric field distributionVSAvoidresonator arrangement complexity

Core Design Contradiction:

Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent applies segmentation by dividing each resonator into distinct functional portions: open-ended sections for electromagnetic coupling and central portions for frequency stabilization. This segmentation allows each portion to perform its specific function independently, achieving uniform electric field distribution through the open end alignment while the modular structure manages the inherent complexity through functional decomposition.

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

This configuration effectively suppresses variations in pass frequency and bandwidth due to inter-substrate distance changes, ensuring stable operation and preventing signal leakage by maintaining distinct resonance frequencies in coupled and uncoupled states.

Implementation Method 1

the resonators are electromagnetically coupled to each other to constitute a two-stage filter for use in signal transmission

Methodology Applied

Scientific EffectElectromagnetic coupling: Electromagnetic Induction

Implementation Method 2

ensuring a uniform electric field distribution and minimizing resonance frequency variations

Methodology Applied

Scientific EffectElectric field distribution: Electric Field

Implementation Method 3

by using a hybrid resonance mode that differentiates resonance frequencies when coupled or uncoupled

Methodology Applied

Scientific EffectResonance: Resonance

Data Source

PatentUS8823216B2Signal transmission device, filter, and inter-substrate communication device

Publication Date: 2014.09.02 TDK CORP

AI summary

In a signal transmission device, first open-ended resonators include a first first-open-ended resonator and a second first-open-ended resonator, in which open ends of the first first-open-ended resonator face a central portion of the second first-open-ended resonator, and a central portion of the first first-open-ended resonator faces open ends of the second first-open-ended resonator. When second open-ended resonators are employed, the second open-ended resonators include a first second-open-ended resonator and a second second-open-ended resonator, in which open ends of the first second-open-ended resonator face a central portion of the second second-open-ended resonator, and a central portion of the first second-open-ended resonator faces open ends of the second second-open-ended resonator. The first and the second open-ended resonators in closest proximity to each other in the first resonator are arranged such that the respective open ends thereof face each other and the respective central portions thereof face each other.