Dual Polarized Antenna Lens Phase Center Compensation
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Solution Overview
Problem
Existing dual orthogonally polarized antennas face challenges in maintaining consistent beam patterns and compensating for phase center offsets between two orthogonally oriented antennas, with existing solutions failing to provide a suitable lens for modifying radiation patterns and protecting the antenna from external influences.
Innovation Solution
A dual orthogonally polarized antenna system utilizing a dielectric lens with two different radii of curvature, where the lens extends to cover and stabilize the antennas, compensating for phase center offsets and focusing orthogonal waves, and optionally a second lens for additional protection and beam focusing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single polarized antenna is used, then the antenna structure is simple, but the antenna cannot transmit or receive radiation in various polarization directions without rotation
Solution Approach 1:
The patent combines two single-polarized antennas (first and second antennas) with orthogonal orientations into a single dual-polarized antenna system. This merging allows the system to transmit and receive both horizontal and vertical polarizations simultaneously, achieving versatility in polarization directions while maintaining a fixed antenna structure without rotation requirements
2Adaptability or versatility
If two single polarized antennas are combined to form dual polarization capability, then various polarization directions can be transmitted/received, but phase center offsets cause inconsistent beam patterns
Solution Approach 1:
The patent introduces a dielectric lens as an intermediary component between the two orthogonally oriented antennas and the radiation space. The lens serves as a mediator that compensates for the phase center offsets of the two antennas, focusing their respective radiation patterns to achieve consistent and stable beam patterns for both horizontal and vertical polarizations
Solution Approach 2:
The patent modifies the radiation characteristics by changing the optical parameters of the dielectric lens, specifically its refractive index and curvature radius. By optimizing these parameters, the lens compensates for the phase center offsets and achieves consistent beam patterns across different polarization directions
3Stability of the object's composition
If a dielectric lens is added to modify radiation patterns and compensate phase centers, then beam pattern consistency is improved, but the device complexity increases
Solution Approach 1:
The dielectric lens is designed to perform multiple functions simultaneously: it acts as a phase compensation element to correct phase center offsets, serves as a beam shaping component to achieve desired radiation patterns, and functions as a protective cover for the antenna elements. This multi-functionality reduces the need for additional separate components, thereby limiting the increase in device complexity
4Adaptability or versatility
If the antenna is rotated to transmit/receive various polarizations, then single polarization antennas can cover all directions, but the system requires mechanical rotation and has reduced reliability
Solution Approach 1:
The patent merges two fixed antennas with orthogonal polarizations into a single dual-polarized system, eliminating the need for mechanical rotation. This combination provides all polarization directions simultaneously through a fixed structure, thereby improving reliability by removing moving parts and mechanical wear issues
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 measurement of two orthogonal polarizations without rotating the antenna, maintains consistent beam patterns, and provides protection from external influences, effectively addressing phase center offsets and radiation pattern modification.
Implementation Method 1
the lens operation principle is not based on reflection but on the refraction of electromagnetic waves at the lens surfaces or within the lens dielectric material
Implementation Method 2
the lens has to be constructed such that it is able to compensate for offsets of the phase centers of the two antennas that form the overall orthogonally polarized antenna
Data Source
AI summary
The invention relates to a dual orthogonally polarized antenna and to a method for measuring two orthogonal polarizations. The orthogonally polarized antenna includes a first antenna and a second antenna for measuring two orthogonal polarizations, each of the two antennas having a phase center. Additionally, a first lens constructed with two different radii of curvature, is placed around the dual orthogonally polarized antenna.