Extended Loop Antenna Assembly for Multi-Component Systems
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Solution Overview
Problem
In multi-component systems such as cochlear implant, hearing aid, and earphone systems, it is challenging to achieve high radiation efficiency for wireless signal transmission due to the limited size of the enclosures, which restricts the length of antennas that can be used, resulting in low efficiency and reliability.
Innovation Solution
The implementation of an extended length loop antenna assembly, where portions of the antenna are distributed across multiple components of the system, utilizing non-galvanic capacitive couplings to maintain galvanic separation while allowing for effective capacitive coupling, enabling the antenna to achieve higher radiation efficiency without increasing the overall system size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the antenna length is increased to achieve high radiation efficiency, then the radiation efficiency is improved, but the device size increases making it difficult to fit into small enclosures
Solution Approach 1:
The antenna is divided into multiple segments distributed across different components of the multi-component system. Each component contains a portion of the antenna, and when components are coupled together, the antenna segments form a continuous extended structure. This segmentation allows the antenna to achieve the required length for high radiation efficiency while each individual component remains compact enough for small enclosures.
Solution Approach 2:
The antenna is configured to extend across multiple spatial dimensions by utilizing the arrangement of multiple components in three-dimensional space. Rather than extending the antenna in a single linear direction within one component, the antenna segments are distributed across multiple components positioned in different spatial locations, effectively using dimensional arrangement to achieve extended length without increasing individual component size.
2Reliability
If galvanic connections are used to connect antenna segments across components, then electrical connectivity is achieved, but corrosion and heat generation occur reducing system reliability
Solution Approach 1:
Capacitive coupling is used as an intermediary mechanism to connect antenna segments across component boundaries without direct galvanic contact. The capacitive coupling allows electrical signal transmission while maintaining galvanic separation, thereby eliminating corrosion and heat generation issues associated with traditional galvanic connections while preserving the electrical connectivity needed for antenna function.
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 solution enhances radiation efficiency, increases transmission range and signal strength, reduces interference, improves battery life, and allows for smaller enclosure designs while minimizing heat generation and potential corrosion issues associated with galvanic connections.
Implementation Method 1
the first and third conductive pads form a first non-galvanic coupling that capacitively couples the first and second portions of the loop antenna
Implementation Method 2
a highly efficient antenna may radiate a relatively large percentage of energy dedicated to driving the antenna to be wirelessly received by other antennas
Data Source
AI summary
A multi-component system includes a first component housing a first conductive pad, a second conductive pad, and a first portion of a loop antenna that terminates on one side at the first conductive pad and on another side at the second conductive pad. The multi-component system further includes a second component housing a third conductive pad, a fourth conductive pad, and a second portion of the loop antenna that terminates on one side at the third conductive pad and on another side at the fourth conductive pad. The second component is distinct from, and configured to detachably couple with, the first component such that the first and third conductive pads, and the second and fourth conductive pads, respectively form first and second non-galvanic couplings that capacitively couple the first and second portions of the loop antenna while the first and second portions of the loop antenna remain galvanically separated.