Orthogonally Polarized Single-Port Antenna for Simpler MIMO Reception
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Solution Overview
Problem
Current broadband resonant antennas require spatial diversity MIMO configurations, which are complex and inefficient, especially in vehicular and base station applications, due to the need for multiple ports and polarization feeds.
Innovation Solution
A single port orthogonally polarized terminal antenna is introduced, which is equally sensitive to two perpendicular polarizations, replacing the need for spatially separated dual MIMO configurations and reducing the requirement for spatial multiplexing MIMO by using a multi-beam dual parabolic cylindrical reflector antenna with a wide frequency bandwidth and high capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If spatial diversity MIMO configurations are used, then signal reception reliability is improved, but device complexity and number of antenna ports increase
Solution Approach 1:
The patent combines two spatially separated ±45° polarization feeds into a single orthogonally polarized feed with one port. This merging reduces the number of antenna ports and simplifies the MIMO configuration while maintaining the ability to receive both vertical and horizontal polarizations through orthogonal modes.
Solution Approach 2:
The single port orthogonally polarized antenna serves multiple functions: it provides both vertical and horizontal polarization reception, enables MIMO operation, and reduces the need for spatial diversity configurations. This multi-functionality eliminates the requirement for separate antenna elements for different polarization modes.
2Adaptability or versatility
If spatially separated dual MIMO configurations are used, then polarization sensitivity is improved, but the number of antenna ports increases
Solution Approach 1:
The patent merges the functionality of two spatially separated feeds into a single orthogonally polarized feed. This single feed maintains sensitivity to both vertical and horizontal polarizations through its orthogonal mode capability, reducing the antenna port count from two to one while preserving polarization adaptability.
Solution Approach 2:
The patent transitions from spatial separation to orthogonal polarization separation. Instead of using two antennas at different spatial locations, it uses a single antenna that separates polarization modes orthogonally, achieving the same effect with fewer physical elements.
3Productivity
If multi-beam dual parabolic cylindrical reflector antenna is used, then frequency bandwidth and capacity are improved, but base station antenna complexity increases
Solution Approach 1:
The patent segments the base station antenna into multiple beams using a dual parabolic cylindrical reflector configuration. This segmentation enables simultaneous vertical and horizontal sectorization, increasing capacity and bandwidth utilization while managing complexity through modular beam formation.
Data Source
AI summary
A single port orthogonally terminal polarized antenna is disclosed herein. The antenna may be used in apparatuses including but not limited to handsets, Internet of Things (IoT) terminals, and vehicles. The antenna significantly reduces the need for spatial diversity multiple-in and multiple-out (MIMO) in terminals.