Waveguide Internal Conductor Assembly Without Glue Variability

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Solution Overview

Problem

Existing internal conductor devices for waveguide radiators, particularly slotted waveguides, face challenges in manufacturing accuracy, reproducibility, and demountability due to the influence of glue thickness and irregular application, leading to variations in RF performance and costly, time-consuming gluing processes.

Innovation Solution

A mechanical fixation method is employed, where the internal conductor is securely attached to the dielectric element, and the dielectric element is fixed to the support rail using form-fitting and force-fitting elements, eliminating the need for glue and allowing for easy assembly, disassembly, and repair, thereby ensuring high precision and reproducibility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If gluing is used to fix the internal conductor on the dielectric element and the dielectric element on the support rail, then the components are securely fixed, but the manufacturing complexity and time increase due to curing processes, and the RF performance varies due to glue thickness irregularities

Engineering Contradiction:

Improvefixation securityVSAvoidmanufacturing process complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent replaces the chemical bonding system (gluing) with a mechanical fixation system. The internal conductor is fixed to the dielectric element and the dielectric element is fixed to the support rail through mechanical means such as clips, latches, or snap-fit structures, eliminating the need for glue application, curing processes, and associated equipment.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent extracts and removes the gluing process from the manufacturing system. By eliminating the adhesive material and curing process entirely, the manufacturing complexity, time, and variability associated with glue application are removed from the production process.

Inventive Principle:

Principle #2Taking out (Extraction)

2Reliability

If gluing is used to assemble the internal conductor device, then the components are bonded together, but the production time increases due to curing requirements and the cost increases due to specialized processes

Engineering Contradiction:

Improveassembly integrityVSAvoidproduction speed

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent substitutes mechanical fixation mechanisms for chemical bonding, enabling immediate assembly without curing wait times. The mechanical clips or latches can be installed and secured instantly, allowing continuous production flow without interruption for adhesive curing.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Ease of manufacture

If gluing is used to fix the components, then the internal conductor device is assembled, but the RF performance disperses due to irregular glue thickness and application variations

Engineering Contradiction:

Improveassembly simplicityVSAvoidRF performance consistency

Core Design Contradiction:

Ease of manufactureVSManufacturing precision

Solution Approach 1:

The patent replaces the variable chemical bonding process with a precise mechanical fixation system. The mechanical clips or latches provide consistent, repeatable positioning and fixation of components, eliminating the thickness variations and application inconsistencies inherent in manual or automated gluing processes.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

4Reliability

If gluing is used to assemble the internal conductor device, then the components are bonded, but the demountability is reduced and repair becomes difficult requiring complete replacement

Engineering Contradiction:

Improveconnection strengthVSAvoiddemountability

Core Design Contradiction:

ReliabilityVSEase of repair

Solution Approach 1:

The patent employs dynamic, reversible mechanical fixation mechanisms such as snap-fit clips or latches that can be easily engaged and disengaged. This allows the internal conductor and dielectric element to be demounted for repair or replacement without destroying the components or requiring specialized tools, unlike permanent adhesive bonds.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS12261362B2Internal conductor device for a waveguide radiator

Publication Date: 2025.03.25 AIRBUS DEFENCE & SPACE GMBH

AI summary

An internal conductor device for a waveguide radiator, in particular for a waveguide radiator has at least one slotted waveguide, at least one support rail, at least one dielectric unit that is arranged on the at least one support rail and comprises at least one dielectric element, and has at least one internal conductor that is arranged on the at least one dielectric unit, wherein the at least one internal conductor is fixed at least substantially mechanically on the at least one dielectric element and/or that the at least one dielectric element is fixed at least substantially mechanically on the at least one support rail.