Tunable Ceramic Resonator Assembly With Patterned Coupling Sheet

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Solution Overview

Problem

Conventional methods for modifying the resonance properties of ceramic resonators are time-consuming, requiring manual reshaping and complete plating removal, which complicates the reshaping process and is inefficient.

Innovation Solution

The use of electrically conductive coupling sheets with patterns, such as through holes, between ceramic resonator articles allows for easy tuning of resonance properties by replacing or modifying the coupling sheets, simplifying the process and reducing time.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If manual reshaping and complete plating removal are used to modify resonance properties, then the resonance characteristics can be adjusted, but the process becomes time-consuming and complicated

Engineering Contradiction:
Improvetunability of resonance propertiesVSAvoidmodification time
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The resonator is divided into separate functional components: a ceramic resonator body and a removable coupling sheet with conductive patterns. This segmentation allows the coupling sheet to be independently modified or replaced to tune resonance properties without affecting the resonator body, thereby reducing modification time while maintaining adaptability

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

A coupling sheet with conductive patterns is introduced as an intermediary element between the ceramic resonator body and external circuitry. This coupling sheet serves as a tunable interface that modifies resonance characteristics through its conductive pattern design, eliminating the need for time-consuming manual reshaping and plating removal of the resonator body itself

Inventive Principle:
Principle #24Intermediary (Mediator)

2Adaptability or versatility

If manual reshaping and complete plating removal are used to modify resonance properties, then the resonance characteristics can be adjusted, but the process complexity increases

Engineering Contradiction:
Improvetunability of resonance propertiesVSAvoidprocess complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The resonator system is segmented into a permanent ceramic resonator body and a separate coupling sheet. This segmentation simplifies the overall process by confining all modification activities to the coupling sheet alone, reducing process complexity while preserving full tunability of resonance properties through pattern design variations

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The coupling sheet functions as a disposable or easily replaceable component with conductive patterns. Instead of permanently modifying the expensive resonator body through complex plating removal and reshaping, simple coupling sheets with different patterns can be manufactured and swapped to achieve desired resonance characteristics, thereby reducing both process complexity and time

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

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 fast and efficient tuning of resonator assemblies by modifying or replacing the coupling sheets, improving the resonance characteristics without the need for extensive plating and reshaping, thus streamlining the manufacturing process.

Implementation Method 1

Such ceramic filters are typically made of ceramic material that provides a piezo-electric effect and resonates at one or more frequencies

Methodology Applied
Scientific EffectPiezoelectric effect: Piezoelectric Effect

Implementation Method 2

The resonator articles are coupled to each other via an electrically conductive coupling sheet, made of electrically conductive material and comprising a pattern in the form of at least one through hole

Methodology Applied
Scientific EffectElectromagnetic coupling: Electromagnetic Induction

Data Source

PatentEP3032636B1Radio frequency resonator assembly
Publication Date: 2020.06.17 NOKIA SOLUTIONS & NETWORKS OY
  • EP3032636B1 patent drawingFigure 1A~1C
  • EP3032636B1 patent drawingFigure 2~4
  • EP3032636B1 patent drawingFigure 5~6

AI summary

This document discloses a resonator assembly comprising: a first ceramic resonator article (100) having determined radio frequency resonance characteristics; a second ceramic resonator article (102) having determined radio frequency resonance characteristics; a coupling sheet (104) attached between the first ceramic resonator article (100) and the second ceramic resonator article (102), wherein the coupling sheet (104) is made of electrically conductive material and comprises a pattern in the form of at least one through hole (106) for tuning properties of the resonator assembly.