Multi-band Base Station Antenna with Segmented Radiating Elements
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Solution Overview
Problem
Current multi-band base station antennas face challenges in optimizing spacing between radiating elements for different frequency bands, leading to compromised performance, particularly in higher frequency bands where compromise spacing can result in increased upper sidelobes, affecting signal quality and coverage.
Innovation Solution
The design separates radiating elements into two sets, where one set operates in both 3.5 GHz and 5 GHz frequency bands, and another set only in the 3.5 GHz band, allowing for optimized spacing that prioritizes the higher frequency band's requirements, thereby improving antenna performance in both bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single linear array with uniform spacing is used for multi-band operation, then the antenna can operate in multiple frequency bands, but the performance in higher frequency bands deteriorates due to increased upper sidelobes caused by compromise spacing
Solution Approach 1:
The radiating elements are divided into two distinct sets: a first set that operates in both 3.5 GHz and 5 GHz bands, and a second set that operates only in the 3.5 GHz band. This segmentation allows each set to be optimally spaced for its specific operational requirements, resolving the contradiction between multi-band adaptability and high-frequency signal quality.
Solution Approach 2:
Different spacing configurations are applied to different sets of radiating elements based on their operational characteristics. The first set uses spacing optimized for both frequency bands, while the second set uses spacing optimized specifically for the 3.5 GHz band, thereby achieving local optimization that improves overall system performance.
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 enhances the antenna's performance by reducing upper sidelobes in the 5 GHz band and ensuring effective coverage in both frequency bands, while maintaining optimal spacing for better signal transmission and reception.
Implementation Method 1
the first set of radiating elements operates in both a first frequency band and a second frequency band
Implementation Method 2
the second set of radiating elements operates in the first frequency band but not in the second frequency band
Data Source
AI summary
A multi-band base station antenna includes a linear array having a plurality of radiating elements arranged in a vertical direction. The radiating elements comprise first and second sets of radiating elements that each include one or more radiating elements. The first set of radiating elements operates in both first and second frequency bands, while the second set of radiating elements operates in the first frequency band but not in the second frequency band.