Parallel Plate Antenna Vertical Polarization Segmentation
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Solution Overview
Problem
There is a need for a compact antenna with practical transmitting and receiving capabilities, particularly for use on platforms like unmanned aerial or undersea vehicles, as existing electrically short antennas are limited to receive-only applications.
Innovation Solution
A compact parallel plate antenna design featuring three vertically spaced conducting plates supported by a rectangular base with a cross-shaped and J-shaped support structure, allowing for secure attachment and perpendicular positioning of the plates to achieve size compaction and vertical polarization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If electrically short antennas are used to achieve compact size, then the antenna size is reduced, but the transmitting capability is lost (receive-only applications)
Solution Approach 1:
The antenna is segmented into three separate conducting plates positioned vertically apart from each other. This segmentation allows each plate to contribute to different resonant frequencies, enabling the compact structure to achieve multiple resonances for both transmitting and receiving capabilities across different frequency bands.
Solution Approach 2:
The antenna transitions from a planar two-dimensional structure to a three-dimensional vertical arrangement by spacing the conducting plates apart in the vertical dimension. This dimensional change allows the compact antenna to achieve multiple resonant frequencies and full-duplex operation without increasing the horizontal footprint.
2Adaptability or versatility
If conventional antenna designs are used to achieve transmitting capability, then the antenna can transmit and receive, but the size becomes too large for compact platforms
Solution Approach 1:
The antenna is segmented into three separate conducting plates positioned vertically apart from each other. This segmentation allows each plate to contribute to different resonant frequencies, enabling the compact structure to achieve multiple resonances for both transmitting and receiving capabilities across different frequency bands.
Solution Approach 2:
The antenna utilizes changes in the physical parameters of the conducting plates (their dimensions, spacing, and configuration) to achieve multiple resonant frequencies. By adjusting these parameters, the antenna can operate at different frequencies for both transmission and reception, maintaining versatility in a compact form.
3Volume of moving object
If the conducting plates are vertically spaced apart to achieve size compaction, then the antenna volume is reduced, but the structural complexity increases
Solution Approach 1:
The support structure merges multiple functions into a single integrated base that holds all three conducting plates in the correct vertical positions. This consolidation reduces the overall structural complexity compared to using separate support elements for each plate, while maintaining the compact vertical arrangement.
Solution Approach 2:
The base structure serves multiple functions: it provides mechanical support for all three conducting plates, establishes the vertical spacing between them, and creates the overall antenna geometry. This multi-functionality reduces the need for additional specialized components, simplifying the overall structure despite the vertical spacing requirement.
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 antenna achieves size compaction while maintaining effective radiating capabilities for both transmitting and receiving, with vertical polarization and consistent radiation patterns across multiple resonances, suitable for use on various platforms.
Implementation Method 1
The antenna includes three parallel conducting plates spaced apart vertically and in alignment with each other on a vertical axis... capable of radiating a vertically polarized wave
Data Source
AI summary
An antenna is provided with conducting plates spaced apart from each other and the base to be in vertical alignment. A cross-shaped support extends perpendicular from a front section of the base to secure the conducting plates. An arm of the support indents to accommodate a conducting plate. A J-shaped support is fastened to a rear planar section of the base with extensions extending perpendicular to secure the conducting plates. A first conducting plate is J-shaped with a bend facing a width edge. A second conducting plate is also J-shaped with the plane of the plate perpendicular to the base and spaced apart from the first conducting plate. A third conducting plate is U-shaped and integral with an L-shaped section with a bend of the U-shape facing the width edge. The short leg of the L-shape section attached in the indentation of the cross-shaped support.