Multi-Polarized Dish Antenna Structure for Wide-Angle Signal Reception
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Solution Overview
Problem
Current dish antennas are limited to single or dual polarization, which restricts their ability to effectively receive signals from multiple directions, thereby limiting their performance in advanced communication systems.
Innovation Solution
A multiple polarized dish antenna design featuring a main dish reflector with an inner concave surface and a multiple polarized antenna source, including a carrier with a conductive layer, radiators, and multiple feeding portions, allowing for radiation energy reflection and improved signal reception from various directions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single polarized or dual polarized antenna is used, then the antenna structure is simple, but the ability to receive signals from multiple directions is limited
Solution Approach 1:
The antenna source is divided into multiple independent radiating elements (first, second, third, and fourth radiating elements) with different polarization directions. Each element can be independently fed and controlled, allowing the antenna to receive signals from multiple directions and polarization states simultaneously, thereby improving adaptability while maintaining a unified structural framework
Solution Approach 2:
The antenna design integrates multiple polarization functions (horizontal, vertical, and diagonal polarizations) into a single antenna structure. The multiple radiating elements with different orientations enable the antenna to handle various signal types and reception scenarios, making it universally applicable to different communication standards and signal environments
2Adaptability or versatility
If multiple radiating elements with different polarizations are integrated, then signal reception from different directions is improved, but the device complexity increases
Solution Approach 1:
Multiple radiating elements with different polarization orientations are merged into a single integrated antenna source structure. The elements are arranged in a compact configuration where they share common support structures and feeding networks, achieving polarization diversity without proportionally increasing overall structural complexity
Solution Approach 2:
The antenna design incorporates radiating elements oriented in different spatial dimensions (horizontal, vertical, and diagonal orientations). By adding dimensional diversity to the radiating element arrangements, the antenna achieves multi-polarization capability while utilizing the three-dimensional space efficiently, preventing simple planar expansion
3Adaptability or versatility
If the number of feeding portions is increased to more than 2, then multiple polarization support is achieved, but the manufacturing complexity increases
Solution Approach 1:
A common ground structure serves as an intermediary element that simplifies the feeding network design. Multiple feeding portions are referenced to this shared ground, reducing the number of independent ground connections needed and simplifying the overall assembly process while maintaining multiple polarization support
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 multiple polarized dish antenna enhances performance by enabling signal reception from different directions, achieving a good bandwidth ratio, high gain, small beam pointing deviation, and excellent antenna isolation, making it suitable for various frequency bands like LTE, Wi-Fi 5G, and Wi-Fi 6G.
Implementation Method 1
The inner concave surface of the main dish reflector reflects radiation energy emitted by the multiple polarized antenna source
Data Source
AI summary
A multiple polarized dish antenna includes a main dish reflector and a multiple polarized antenna source. The main dish reflector includes an inner concave surface. The multiple polarized antenna source is at least partially disposed beside the inner concave surface. The inner concave surface of the main dish reflector reflects a radiation energy emitted by the multiple polarized antenna source. The multiple polarized antenna source includes a carrier, at least one radiator, and feeding portions. The carrier includes a conductive layer. The at least one radiator is disposed above the carrier. A resonance gap is between the at least one radiator and the conductive layer. The feeding portions are disposed beside the at least one radiator. A projection of each of the feeding portions on a plane where the corresponding radiator is located is at least partially overlapped with the radiator. each of the feeding portions is insulated from the conductive layer.