Stacked Dipole Radiating Element for Compact Multi-Band Beams
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Solution Overview
Problem
Existing multi-band antenna apparatuses face challenges in optimizing the arrangement of radiating elements to achieve excellent antenna gain, minimizing weight and thickness, and reducing passive intermodulation distortion (PIMD) while accommodating beam characteristic variations.
Innovation Solution
A radiating element design featuring a base panel with bent dipoles extending in different directions, spaced apart by shape retainers, and fed by separate feeding lines, allowing for optimal beam radiation patterns and phase shifting without altering physical transmission line lengths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If radiating elements are spaced apart to avoid mutual interference, then beam radiation quality is improved, but overall product size increases
Solution Approach 1:
The patent transitions from two-dimensional planar arrangement to three-dimensional spatial arrangement by stacking radiating elements at different heights above the reflecting panel. Low-band elements are positioned at a first height while mid-band elements are positioned at a second height, utilizing the vertical dimension to achieve both interference avoidance and compact footprint.
Solution Approach 2:
The patent employs a nested configuration where mid-band radiating elements are positioned within the vertical projection area of low-band radiating elements. This nesting approach allows multiple frequency bands to coexist in a compact space by utilizing different vertical levels rather than requiring lateral separation.
2Adaptability or versatility
If phase shifters are added to change transmission line length, then beam characteristic variation is achieved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent changes the physical parameter of radiating element configuration (position, orientation, and dimensions) to achieve beam characteristic variations. By adjusting the spatial arrangement and geometric parameters of radiating elements across different frequency bands, the system achieves adaptability without requiring complex phase shifting mechanisms.
3Adaptability or versatility
If multiple radiating elements for different frequency bands are arranged, then multi-band communication capability is achieved, but weight of components increases
Solution Approach 1:
The patent combines multiple radiating elements for different frequency bands into a single integrated antenna assembly sharing common support structures, feeding mechanisms, and control systems. This merging approach achieves multi-band capability while minimizing redundant components and overall weight.
Solution Approach 2:
The patent designs radiating elements and supporting structures to serve multiple frequency bands simultaneously. The same structural components and support framework accommodate both low-band and mid-band elements, making the system multi-functional without proportionally increasing weight.
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
Improves antenna gain, reduces overall weight and thickness, and enhances PIMD performance by enabling flexible beam adjustments and reducing manufacturing costs.
Implementation Method 1
at least one dipole bent and extended from the base panel in respective different directions to radiate different polarized beams
Data Source
Figure 1(a)~1(b)
Figure 2a
Figure 2b
AI summary
The present disclosure relates to a radiating element for antennas, and more particularly, to a radiating element including a base panel stacked and coupled parallel to a front surface of a reflecting panel, and at least one dipole bent and extended from the base panel in respective different directions to radiate different polarized beams, thereby improving antenna gain and reducing the weight of a product.