Segmented Lightning Rod for Antenna Systems

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Solution Overview

Problem

Conventional lightning protection systems for antenna systems often negatively impact the performance of these systems due to their design, which is not optimized to minimize interference with the antenna's frequency operations.

Innovation Solution

A lightning rod with multiple sections, each dimensioned to be less than a quarter of the wavelength of the antenna's operating frequency, is inductively coupled to reduce interference and provide effective lightning protection without compromising the antenna's performance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a conventional lightning rod is used to protect the antenna system, then lightning protection is provided, but the antenna system performance is negatively impacted

Engineering Contradiction:
Improvelightning protectionVSAvoidantenna system performance
Core Design Contradiction:
ReliabilityVSProductivity

Solution Approach 1:

The lightning rod is divided into multiple sections, each with a dimension less than a quarter of the wavelength of the antenna's operating frequency. This segmentation reduces the electromagnetic interference between the lightning rod and the antenna system while maintaining the lightning protection function through inductive coupling between sections.

Inventive Principle:
Principle #1Segmentation

2Productivity

If the lightning rod dimension is reduced to minimize antenna interference, then antenna performance is improved, but lightning protection effectiveness may be compromised

Engineering Contradiction:
Improveantenna system performanceVSAvoidlightning protection effectiveness
Core Design Contradiction:
ProductivityVSReliability

Solution Approach 1:

Multiple inductive coupling elements are nested between the sections of the lightning rod, creating a compact structure where each coupling element is positioned within the spatial framework of the sections. This nesting allows the lightning rod to maintain its protective function while minimizing the overall dimension that could interfere with the antenna's radiation pattern.

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

Inductive coupling elements are introduced as intermediary components between the sections of the lightning rod. These coupling elements provide electrical connection and maintain the lightning protection function while their compact design minimizes the physical footprint and electromagnetic interference with the antenna system.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Productivity

If multiple inductive coupling elements are added to the lightning rod sections, then antenna performance is maintained, but device complexity increases

Engineering Contradiction:
Improveantenna system performanceVSAvoidlightning rod structure
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The inductive coupling elements are merged with the lightning rod sections to form an integrated structure. Each coupling element is positioned between adjacent sections and is electrically connected to them, creating a unified lightning protection system that maintains antenna performance without requiring separate, complex assembly components.

Inventive Principle:
Principle #5Merging (Combining)

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

The solution effectively diverts lightning strikes away from the antenna system, reducing the risk of damage while maintaining the antenna's performance by using inductively coupled sections that are strategically positioned to minimize interference with the antenna's frequency operations.

Implementation Method 1

The plurality of sections is inductively coupled

Methodology Applied
Scientific EffectInductive coupling: Electromagnetic Induction

Data Source

PatentEP3754787B1Lightning rod
Publication Date: 2023.03.01 HENSOLDT SENSORS GMBH
  • EP3754787B1 patent drawingFigure 1
  • EP3754787B1 patent drawingFigure 2
  • EP3754787B1 patent drawingFigure 3

AI summary

A lightning rod for protecting an antenna system is provided. The lightning rod has a plurality of sections. Each section of the plurality of sections has a dimension. The dimension is less than a quarter of a wavelength according to an operating frequency of the antenna system to be protected. The plurality of sections is inductively coupled. Further, a group of lightning rods and a system of a lightning rod or a group of lightning rods and an antenna system are provided. Further a first and second method of protecting an antenna system is provided.