Dielectric Antenna Array Supports for Precise Gap Alignment

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Solution Overview

Problem

Traditional antenna arrays face challenges in maintaining optimal dimensional gaps due to misalignment and deformation during assembly and operation, especially in tightly coupled dipole arrays, which affects performance in terms of frequency bandwidth, beam steering, and return loss, and requires complex assembly and additional dielectric materials that increase costs and add losses.

Innovation Solution

The use of dielectric supports with press-fit or snap-fit fastening mechanisms, manufactured from materials like Teflon or Ultem, which provide alignment and structural support within the antenna array, minimizing the volume of dielectric material and eliminating the need for adhesives, while being compatible with additive manufacturing techniques to maintain optimized gaps and resist shocks and vibrations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If traditional bonding or form-in-place dielectric structures are used to control dimensional gaps, then alignment and positional optimization can be achieved, but device complexity and manufacturing cost increase

Engineering Contradiction:

Improvedimensional gap controlVSAvoidassembly complexity

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The dielectric structure is segmented into multiple support regions that can be independently formed, allowing each segment to provide localized gap control without requiring complex overall assembly procedures

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The dielectric structures are formed in-place during the manufacturing process before final assembly, pre-establishing the dimensional gap controls and eliminating subsequent alignment operations

Inventive Principle:

Principle #10Preliminary action

2Stability of the object's composition

If solid cylinder dielectric material is used to constrain coaxial waveguide pins, then positional stability is improved, but energy loss increases

Engineering Contradiction:

Improvepositional stabilityVSAvoiddielectric loss

Core Design Contradiction:

Stability of the object's compositionVSLoss of energy

Solution Approach 1:

The dielectric structure incorporates air spaces and non-solid regions that reduce the overall dielectric material volume, thereby minimizing energy loss while maintaining structural support through the distributed porous architecture

Inventive Principle:

Principle #31Porous materials

Solution Approach 2:

Dielectric material is applied locally only where positional support is needed rather than as a solid cylinder, providing stability at critical interfaces while minimizing unnecessary dielectric material that would cause energy loss

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS20240014571A1Alignment and constraining devices for maintaining positional optimizations between antenna array components

Publication Date: 2024.01.11 OPTISYS INC

AI summary

Dielectric inserts providing positional support for components of antenna arrays. An antenna array includes a radiating element configured to receive or transmit an electromagnetic signal and an alignment horn attached to the radiating element, wherein the alignment horn comprises a detent end. The antenna array is such that the radiating element and the alignment horn are manufactured together as a single element by a three-dimensional printing process such that manufacturing the single element does not require a separate joining process for joining separate components.