Pseudo-conductor Antenna for Conformal Integration
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Solution Overview
Problem
Conventional antennas face limitations in achieving wideband efficiency and conformal applications due to image currents and surface wave guidance issues, particularly when mounted on electrically conducting surfaces, which restrict their bandwidth and radiation performance.
Innovation Solution
The use of pseudo-conductor materials with a real part of electromagnetic constitutive properties significantly greater than the imaginary part, allowing for the design of antennas that weakly guide electromagnetic waves and radiate emissions efficiently, even when electrically small, and can be conformally integrated with conducting surfaces without being shorted out.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional antennas are mounted on electrically conducting surfaces, then they can be integrated with the surface, but their bandwidth and radiation performance deteriorate due to image currents and surface wave guidance issues
Solution Approach 1:
The patent changes the electromagnetic parameters of the antenna material from conventional conductive materials to pseudo-conductor materials with specific constitutive properties (real part greater than imaginary part). This parameter change allows the antenna to maintain conformal integration capability while avoiding the harmful effects of image currents and surface wave guidance, thereby resolving the contradiction between adaptability and radiation performance
Solution Approach 2:
The patent employs composite pseudo-conductor materials that combine properties of both conductive and dielectric materials. These composite materials enable the antenna to achieve wideband performance and efficient radiation while maintaining conformal integration with conducting surfaces, resolving the performance degradation issue without sacrificing adaptability
2Volume of moving object
If conventional antennas are made electrically small, then their size is reduced, but their radiation efficiency deteriorates
Solution Approach 1:
The patent changes the material parameters to pseudo-conductor materials with real part greater than imaginary part, which fundamentally alters the relationship between antenna size and radiation efficiency. This parameter change enables electrically small antennas to achieve high radiation efficiency by weakly guiding electromagnetic waves, breaking the conventional size-efficiency tradeoff
3Power
If conventional antennas use electrically conductive materials, then they can transmit and receive electromagnetic waves, but their bandwidth is limited
Solution Approach 1:
The patent uses composite pseudo-conductor materials that combine conductive and dielectric properties, enabling the antenna to achieve wideband performance while maintaining electromagnetic wave transmission capability. The unique material properties allow operation across multiple frequency bands including L, S, C, X, Ku, K, and Ka bands
Solution Approach 2:
By changing the material parameters from conventional conductive materials to pseudo-conductor materials with specific constitutive properties, the patent achieves significant bandwidth expansion while maintaining power transmission capability, resolving the contradiction between power and productivity
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
Pseudo-conductor antennas achieve improved radiation efficiency and wideband performance by leveraging the high real part of electromagnetic constitutive properties, enabling efficient radiation and conformal integration with conducting surfaces, thus overcoming the limitations of conventional antennas.
Implementation Method 1
allowing for the design of antennas that weakly guide electromagnetic waves and radiate emissions efficiently
Implementation Method 2
The pseudo-conductor material has an electromagnetic constitutive property having a real part greater than a corresponding imaginary part of the electromagnetic constitutive property
Data Source
AI summary
An antenna includes a first antenna element comprising a pseudo-conductor material and forming a substantially closed polygonal loop around a center. The first antenna element conforms to a ground plane. The antenna also includes a plurality of transmission lines in the ground plane. Each transmission line comprises a conductor material, is extending radially outward from a feed end towards an outer end, is electromagnetically coupled to the first antenna element at a crossover point at which the transmission line crosses over the first antenna element, and is coupled, at the center, to a corresponding feed line. The antenna further includes a feed circuit for exciting the plurality of transmission lines to cause the antenna to emit in a predetermined direction and using a predetermined polarization mode.