Dielectric Resonator Array With Off-Axis Feeds
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Solution Overview
Problem
There is a need for antenna arrays with reduced size and improved beam scanning capabilities, as existing technologies face challenges in miniaturizing antennas while maintaining signal coupling and performance, particularly in high-frequency applications.
Innovation Solution
The use of a periodic array of high dielectric constant dielectric resonators with off-axis signal feeds and angled magnetic poles, integrated into existing fabrication processes, allows for a miniaturized very high frequency antenna with enhanced beam scanning and reduced coupling between adjacent resonators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If antenna array size is reduced, then miniaturization is achieved, but signal coupling between nearest neighbors increases
Solution Approach 1:
The patent employs asymmetric positioning of feed lines relative to dielectric resonators, where feed lines are deliberately offset from the central axis of resonators. This asymmetric configuration creates non-uniform current distribution and magnetic field patterns that reduce coupling between adjacent resonators while maintaining compact array dimensions. The off-axis feeding geometry transforms the symmetric coupling problem into an asymmetric solution space where coupling can be minimized through geometric optimization.
Solution Approach 2:
The patent introduces vertical dimensionality by positioning feed lines at different heights relative to resonators and utilizing three-dimensional dielectric resonator structures. This dimensional transition from planar to spatial configuration allows the system to achieve miniaturization in the horizontal plane while managing coupling effects through vertical separation and angular orientation of magnetic dipole moments.
2Volume of moving object
If antenna array size is reduced, then miniaturization is achieved, but beam scanning performance deteriorates
Solution Approach 1:
The patent implements dynamic beam scanning capability through independent phase and amplitude control of each dielectric resonator element in the array. By enabling electronic adjustment of excitation parameters for individual resonators, the system achieves steerable beam patterns without mechanical movement, maintaining adaptability while achieving miniaturization through the compact resonator structures.
Solution Approach 2:
The patent utilizes parameter optimization including dielectric constant selection, resonator dimensions, feed line offset distances, and operating frequency to achieve miniaturization while preserving beam scanning performance. By carefully tuning these parameters, the system maintains the electrical length and radiation characteristics necessary for effective beam steering in a reduced physical footprint.
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
This configuration results in improved gain and beam scanning performance, enabling a reduction in array size while maintaining or improving signal quality, as demonstrated by simulation data showing increased gain and reduced coupling between resonators.
Implementation Method 1
a plurality of spaced apart dielectric resonators... Each one of the respective ones of the plurality of signal lines is disposed in off-axis electrical signal communication with a first portion of the respective ones of the plurality of resonators
Implementation Method 2
provide a corresponding magnetic dipole vector... angled magnetic poles... resulting magnetic dipoles
Data Source
AI summary
An array apparatus includes a plurality of spaced apart dielectric resonators, and a plurality of spaced apart signal lines disposed in one-to-one relationship with respective ones of the plurality of resonators. Each one of the respective ones of the plurality of signal lines is disposed in off-axis electrical signal communication with a first portion of the respective ones of the plurality of resonators.