Implantable Meander-Line Sensor Antenna for Stable Signal Transmission
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Solution Overview
Problem
Conventional signal sensing devices that cannot be directly installed in an organism due to environmental interference struggle with effective signal transmission, preventing immediate physiological state monitoring.
Innovation Solution
A signal sensing device with biodegradable components and meander-line type signal transmission sections, featuring non-overlapping antenna arrangements and protruding structures, enhances signal transmission quality and allows installation within an organism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the signal sensing device is installed inside an organism, then the signal transmission quality improves, but the device complexity increases due to biodegradable material requirements and meander-line antenna structure
Solution Approach 1:
The signal sensing device is divided into multiple functional components: meander-line type signal transmission sections, signal sensing sections, and biodegradable body materials. This segmentation allows each component to be optimized independently for its specific function while maintaining overall system performance.
Solution Approach 2:
The meander-line antenna structure transforms a simple linear conductor into a two-dimensional or three-dimensional winding pattern. This dimensional transformation increases the effective antenna length and radiation efficiency within the constrained space of the implantable device, thereby improving signal transmission quality.
2Reliability
If the antenna shapes are arranged with non-overlapping vertical projections, then the signal transmission effect is enhanced, but the manufacturing precision requirements increase
Solution Approach 1:
The meander-line antenna structures employ asymmetric winding patterns with specific geometric parameters. The vertical projections are deliberately designed to be non-overlapping, creating an asymmetric spatial arrangement that reduces mutual coupling between adjacent antennas while maintaining efficient radiation patterns.
3Ease of operation
If the device is designed to be biodegradable and absorbable by the organism, then the ease of operation improves by avoiding removal surgery, but the duration of action is limited by the degradation time
Solution Approach 1:
The biodegradable body material is designed to automatically degrade and be absorbed by the organism's natural metabolic processes after completing its sensing function. This self-service mechanism eliminates the need for surgical removal, reducing patient burden and medical intervention requirements.
Solution Approach 2:
The degradation time of the biodegradable material is carefully controlled by adjusting its chemical composition and structural parameters. This allows the device to maintain structural integrity and functionality for the required monitoring duration while ensuring complete degradation within a predetermined time frame, balancing operational duration with biodegradability.
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 device effectively transmits high-quality signals for physiological monitoring, degrading naturally without requiring removal, thus avoiding secondary operations and ensuring stable signal reception.
Implementation Method 1
Each of the two signal sensing elements includes a signal transmission section and a signal sensing section in electrical connection with the signal transmission section. The signal transmission sections are planar antennae parallel to each other and each having an antenna shape of meander-line type.
Data Source
AI summary
A signal sensing device includes a body and two signal sensing elements disposed in the body. An insulating layer is sandwiched between the two signal sensing elements. Each of the two signal sensing elements incudes a signal transmission section and a signal sensing section in electrical connection with the signal transmission section. The signal transmission sections are planar antennae parallel to each other and each having an antenna shape of meander-line type. The antenna shape of each transmission section has a vertical projection on a plane parallel to each signal transmission section. The vertical projections of the antenna shapes do not overlap completely. When a portion of the body forms a surrounding portion which surrounds a to-be-sensed target, a portion or an entirety of each signal sensing section is located on the surrounding portion.