Multiferroic Antenna Coplanar Design for Aircraft Skin Integration
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Solution Overview
Problem
Conventional antennas on aircraft protrude, increasing drag, adding weight, and requiring costly cavities that compromise structural integrity and efficiency.
Innovation Solution
A multiferroic antenna design featuring a substrate on an electrically conductive ground plane with layers of piezoelectric and magnetostrictive materials, where mechanical strain induced by a voltage signal generates a radio frequency magnetic field, eliminating the need for protrusions or cavities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional antennas protrude from the aircraft surface, then antenna functionality is achieved, but drag increases and anti-icing challenges arise
Solution Approach 1:
The patent combines the antenna element and ground plane into a single coplanar structure on the aircraft skin surface. The antenna element and ground plane are formed on the same surface level without protrusion, merging what were traditionally separate three-dimensional components into a two-dimensional integrated structure that eliminates drag while maintaining electromagnetic radiation functionality.
Solution Approach 2:
The invention transitions from traditional three-dimensional protruding antenna structures to a two-dimensional coplanar configuration. By placing both the antenna element and ground plane on the same surface plane of the aircraft skin, the design eliminates the vertical dimension protrusion that causes drag, while still achieving the necessary electromagnetic field generation through in-plane geometric relationships.
2Reliability
If conventional antennas require cavities in the aircraft surface, then antenna functionality is achieved, but weight increases and structural integrity is compromised
Solution Approach 1:
The patent merges the antenna element and ground plane into a coplanar configuration on the aircraft skin surface, eliminating the need for separate cavity structures. This integration removes the additional weight associated with cavity construction while maintaining the electromagnetic resonance functionality through in-plane geometric design.
Solution Approach 2:
The invention moves the ground plane from a three-dimensional cavity structure into the same two-dimensional surface plane as the antenna element. This dimensional transition eliminates the vertical space requirements for cavities, reducing both weight and structural complexity while preserving the necessary electromagnetic field distribution for antenna operation.
3Reliability
If conventional antennas require cavities in the aircraft surface, then antenna functionality is achieved, but integration cost increases
Solution Approach 1:
The patent combines the antenna element and ground plane into a single coplanar structure that can be manufactured as an integrated component on the aircraft skin surface. This merging eliminates the need for separate cavity fabrication and assembly operations, reducing integration cost and manufacturing complexity while maintaining full antenna functionality.
4Reliability
If conventional antennas protrude from the aircraft surface, then antenna functionality is achieved, but anti-icing challenges arise
Solution Approach 1:
The patent merges the antenna element and ground plane into a coplanar configuration that lies flush with the aircraft skin surface. This integration eliminates protruding surfaces that would otherwise accumulate ice, removing the anti-icing challenges associated with traditional antenna designs while preserving electromagnetic radiation functionality.
Solution Approach 2:
The invention transitions the antenna structure from a three-dimensional protruding form to a two-dimensional coplanar form on the aircraft surface. This dimensional change eliminates the vertical exposure that causes ice accumulation, allowing the antenna to function without anti-icing systems while maintaining electromagnetic performance.
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 efficient radio frequency electromagnetic wave generation without the need for protrusions or cavities, reducing drag, weight, and integration costs while maintaining structural integrity.
Implementation Method 1
A layer of piezoelectric material may be formed on the substrate. A mechanical strain is created in the layer of piezoelectric material in response to a voltage signal being applied to the multiferroic element.
Implementation Method 2
The mechanical strain in the layer of piezoelectric material causes a mechanical strain in the layer of magnetostrictive material to produce a radio frequency magnetic field that is proportional to the voltage signal for generating a radio frequency electromagnetic wave.
Data Source
AI summary
A multiferroic element may include a substrate formed on an electrically conductive ground plane. The substrate may be formed from a material having a predetermined elastic modulus. A layer of piezoelectric material may be formed on the substrate. A layer of magnetostrictive material may be bonded to the layer of piezoelectric material. A mechanical strain is created in the layer of piezoelectric material in response to a voltage signal being applied to the multiferroic element. The mechanical strain in the layer of piezoelectric material causes a mechanical strain in the layer of magnetostrictive material to produce a radio frequency magnetic field that is proportional to the voltage signal for generating a radio frequency electromagnetic wave. The predetermined elastic modulus of the substrate is substantially lower than an elastic modulus of the layer of piezoelectric material.