Coplanar Antenna With Conductive Peninsula For ESD Protection
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Solution Overview
Problem
Existing wearable technology antennas require insulating radomes to protect against static discharge and maintain electrical properties, which adds bulk and complexity.
Innovation Solution
A coplanar antenna design featuring a conductive plane with a conductive peninsula, where the length of the conductive plane is less than one-quarter of a wavelength of a resonant frequency, and an insulating region outlining the peninsula, allowing for tunable inductance and operation without a radome.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional antenna designs are used, then the antenna is protected from static discharge, but the antenna requires an insulating radome that adds bulk and complexity
Solution Approach 1:
The patent merges the antenna element with the conductive plane, eliminating the need for a separate insulating radome. The coplanar configuration integrates the radiating element and ground plane in the same plane, while the conductive plane itself provides ESD protection, combining multiple functions into a single structure.
Solution Approach 2:
The patent extracts and eliminates the insulating radome component from the traditional antenna structure. By using a coplanar design where the antenna element is directly integrated with the conductive plane, the design removes the bulky insulating cover while maintaining ESD protection through the conductive plane's inherent properties.
2Length of moving object
If the conductive plane length is less than one-quarter wavelength, then the antenna achieves higher resonant frequencies and smaller dimensions, but the antenna requires a tunable inductance mechanism
Solution Approach 1:
The patent implements a tunable inductance mechanism that allows dynamic adjustment of the antenna's electrical characteristics. The inductance value can be changed to compensate for the shortened conductive plane length, enabling the antenna to resonate at higher frequencies while maintaining proper impedance matching and resonance conditions.
Solution Approach 2:
The patent changes the electrical parameters of the antenna system by introducing a tunable inductance element. By adjusting the inductance value, the antenna can be tuned to resonate at different frequencies, compensating for the reduced physical length of the conductive plane and achieving higher resonant frequencies.
3Device complexity
If a coplanar design is used, then the antenna simplifies structure and reduces bulk, but the antenna requires precise geometric configuration for proper operation
Solution Approach 1:
The patent employs asymmetric geometric configuration in the coplanar antenna design, where the conductive plane and antenna element have specific non-symmetric dimensions and spacing. This asymmetric layout is optimized to achieve proper current distribution and resonance characteristics while maintaining a simplified planar structure that is easier to manufacture than traditional three-dimensional antenna designs.
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
Enables smaller antenna dimensions, higher resonant frequencies, and immunity to electrostatic discharge without the need for an insulating cover, simplifying design and reducing bulk.
Implementation Method 1
the length of the conductive plane along a first dimension is less than one-quarter of a wavelength of a resonant frequency
Implementation Method 2
an insulating region within the conductive plane, wherein the insulating region is of a shape that outlines a conductive peninsula
Data Source
AI summary
A coplanar antenna including a conductive plane, wherein the length of the conductive plane along a first dimension is less than one-quarter of a wavelength of a resonant frequency; an insulating region within the conductive plane, wherein the insulating region is of a shape that outlines a conductive peninsula, wherein: the conductive peninsula is coupled to the conductive plane, the conductive peninsula is substantially coplanar to a major portion of the conductive plane, the conductive peninsula is operable to be electrically coupled to an electric feed circuit, and the conductive peninsula is operable to electrically couple a tunable inductance to the conductive plane after receiving a current from the electric feed circuit.