Multi-band Antenna with Nested Dipole Modules
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Solution Overview
Problem
Designing a multi-band multi-polarized wireless communication antenna that optimizes structure, size, and radiation characteristics while allowing for easy beam width adjustment and compact design in limited space is challenging, as existing antennas face difficulties in achieving optimal performance and size reduction.
Innovation Solution
The antenna features a configuration with multiple radiation modules on a single reflector, where each module includes dipole-shaped radiation elements arranged in specific patterns to generate multiple polarized waves, with a feeding network linking catty-cornered elements to optimize space usage and beam width, allowing for stable radiation characteristics and easy adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antenna arrays for different bands are installed on one reflector, then multi-band functionality is achieved, but the antenna size and structural complexity increase
Solution Approach 1:
The patent combines multiple antenna arrays for different frequency bands (first band and second band) onto a single reflector structure. The first antenna array includes multiple first radiation elements, and the second antenna array includes multiple second radiation elements, all mounted on the same reflector to achieve multi-band functionality while sharing common structural support
Solution Approach 2:
The reflector serves multiple functions by supporting both the first antenna array for the first frequency band and the second antenna array for the second frequency band. This universal structure eliminates the need for separate reflectors for each band, reducing overall structural complexity while maintaining multi-band operational capability
2Adaptability or versatility
If multiple antenna arrays for different bands are installed on one reflector, then multi-band functionality is achieved, but the overall antenna size increases
Solution Approach 1:
The second antenna array is positioned within the spatial footprint of the first antenna array on the reflector. The second radiation elements are arranged in a nested configuration relative to the first radiation elements, allowing both bands to operate simultaneously without requiring proportionally increased antenna area
Solution Approach 2:
The patent utilizes vertical spacing and three-dimensional arrangement on the reflector surface to accommodate multiple antenna arrays. By distributing elements across different vertical positions and utilizing the z-dimension, the design fits multiple bands into a compact two-dimensional footprint on the reflector
3Area of stationary object
If radiation elements are arranged to optimize space usage, then compact design is achieved, but beam width adjustment becomes more difficult
Solution Approach 1:
The antenna arrays are divided into multiple independent radiation elements (first radiation elements and second radiation elements) that can be individually controlled. This segmentation allows selective activation and independent phase control of subsets of elements, enabling beam width adjustment through electronic beamforming while maintaining the compact physical arrangement
Solution Approach 2:
The patent implements dynamic beam width control through electronic phase shifters and amplitude control for each radiation element. By dynamically adjusting the phase and amplitude of signals fed to individual elements, the beam width can be electronically modified without changing the physical compact arrangement of the radiation elements on the reflector
Data Source
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AI summary
The present invention relates to a multi-band, multi-polarized wireless communication antenna, which comprises: a reflector; at least one fist radiation module of a first band which is installed on the reflector; and at least one second or third radiation module of a second band or a third band installed on the reflector, wherein the first radiation module comprises first to fourth radiating elements having a dipole structure, the first to fourth radiating elements are configured such that every two radiating arms thereof are connected in the shape of letter "", one of the two radiating arms is configured to be placed side by side along side of the reflector, and the second or third radiation module is installed to be included within an installation range of the first radiation module.