Launch Pin Antenna Structure for Compact Impedance Matching

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Solution Overview

Problem

Conventional launch pins in antenna arrangements are space inefficient, costly, and difficult to manufacture, limiting the performance and efficiency of antenna arrays, particularly at high frequencies.

Innovation Solution

An antenna arrangement with a launch pin comprising a conductive element and a dielectric element, where the conductive element has varying diameters and is sleeved by the dielectric element, allowing for a compact design that can be easily assembled and manufactured, with a dielectric element providing support and impedance matching.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If conventional launch pins are used in antenna arrangements, then the antenna elements can be fed with electromagnetic waves, but the space efficiency on the circuit board deteriorates and manufacturing complexity increases

Engineering Contradiction:
Improvespace efficiency on circuit boardVSAvoidmanufacturing complexity of launch pin
Core Design Contradiction:
Area of stationary objectVSDevice complexity

Solution Approach 1:

The patent combines the conductive element and dielectric element into a single integrated launch pin structure. The conductive element provides electromagnetic wave transmission while the dielectric element provides insulation and mechanical support, merging multiple functions into one component that reduces overall space requirements and simplifies manufacturing processes

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The dielectric element is designed to surround or enclose portions of the conductive element, creating a nested structure where the conductive core is embedded within the dielectric material. This nesting approach maximizes space efficiency by utilizing the internal volume of the launch pin rather than requiring separate discrete components

Inventive Principle:
Principle #7Nested doll (Nesting)

2Reliability

If conventional launch pins with multiple components are used, then electrical conductivity can be maintained, but manufacturing cost and assembly difficulty increase

Engineering Contradiction:
Improveelectrical conductivityVSAvoidmanufacturing and assembly convenience
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent merges the conductive element and dielectric element into a single integrated component that can be manufactured as one piece or pre-assembled unit. This reduces the number of separate components that need to be handled, positioned, and secured during assembly, thereby improving ease of manufacture while maintaining the necessary electrical conductivity through the conductive element

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The conductive and dielectric elements are designed to be pre-positioned or pre-assembled in their correct relative configurations before installation into the antenna array. This preliminary preparation ensures proper alignment and electrical connectivity are achieved without requiring complex assembly procedures during final installation

Inventive Principle:
Principle #10Preliminary action

3Area of stationary object

If launch pins are made compact to improve space efficiency, then area usage improves, but maintaining high-frequency performance and impedance matching becomes more difficult

Engineering Contradiction:
Improvefootprint on circuit boardVSAvoidimpedance matching precision
Core Design Contradiction:
Area of stationary objectVSManufacturing precision

Solution Approach 1:

The patent applies local quality by varying the dimensions of the dielectric element along the length of the conductive element. Different sections of the dielectric element have different diameters or thicknesses to provide impedance matching at different locations along the launch pin, ensuring proper electromagnetic wave transmission at high frequencies while maintaining a compact overall structure

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The patent utilizes parameter changes by adjusting the geometric parameters of the dielectric element (such as diameter, length, or thickness) to optimize impedance matching. By carefully selecting and varying these parameters along the launch pin structure, the design achieves proper impedance transformation and matching without requiring a large footprint on the circuit board

Inventive Principle:
Principle #35Parameter changes

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 design increases space efficiency, reduces manufacturing costs, and enhances assembly convenience while maintaining high-frequency performance and robustness, with the dielectric element supporting the conductive element and facilitating impedance matching.

Implementation Method 1

a dielectric element, wherein the conductive element comprises a first portion having a first diameter, the first portion extending to a second portion having a second diameter, the second diameter being greater than the first diameter, wherein the dielectric element sleeves an upper part of the first portion of the conductive element

Methodology Applied
Scientific EffectDielectric insulation: Dielectric

Implementation Method 2

the conductive element comprises a first portion having a first diameter, the first portion extending to a second portion having a second diameter, the second diameter being greater than the first diameter

Methodology Applied
Scientific EffectImpedance matching:

Data Source

PatentUS12537307B2Antenna arrangement comprising a launch pin
Publication Date: 2026.01.27 SAAB AB
  • US12537307B2 patent drawing
  • US12537307B2 patent drawing
  • US12537307B2 patent drawing

AI summary

The present disclosure relates to an antenna arrangement including a sheet of dielectric having a connecting surface, the connecting surface including at least one grounding pad and a through-hole and an antenna element structure. The antenna arrangement further includes a launch pin including a conductive element and a dielectric element, wherein the conductive element includes a first portion having a first diameter, the first portion extending to a second portion having a second diameter, the second diameter being greater than the first diameter.