Stacked Antenna Structure for Multi-Band Mobile Terminals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The increasing demand for multiple frequency bands in 5G communication within mobile terminals, such as 4G/3G/2G, conflicts with the requirement for thinner and lighter designs, limiting internal space for antennas.
Innovation Solution
The proposed solution involves stacking antennas of different frequency bands, with the higher frequency band antenna positioned above the lower frequency band antenna, utilizing a non-conductive support structure to prevent signal interference, allowing for efficient space use, reduced costs, and flexible layout.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of antennas is increased to meet 5G communication requirements and support multiple frequency bands, then communication capability is improved, but the internal space of the mobile terminal is reduced
Solution Approach 1:
The patent transitions from traditional planar antenna arrangement to a three-dimensional stacked configuration. Multiple antennas are arranged in different layers along the vertical dimension, allowing signals of different frequency bands to be transmitted simultaneously without occupying additional horizontal space. This spatial reorganization resolves the contradiction by utilizing the Z-axis dimension to accommodate multiple antennas while maintaining a compact footprint suitable for thin mobile terminals.
Solution Approach 2:
The patent implements a nested arrangement where antennas of different frequency bands are stacked within the same spatial envelope. The first antenna and second antenna are positioned in different layers, with each antenna effectively nested within the overall antenna assembly structure. This nesting approach allows multiple antennas to coexist in a compact volume, addressing the space constraint while supporting multi-band communication.
2Volume of moving object
If antennas are stacked closely to save space, then space utilization is improved, but signal interference between antennas increases
Solution Approach 1:
The patent introduces a first support structure and second support structure as intermediary elements between the stacked antennas. These support structures serve as isolators that physically separate the first antenna and second antenna while maintaining their stacked configuration. By positioning support structures between adjacent antennas, the design achieves close spatial arrangement for space efficiency while the intermediaries prevent harmful signal interference, resolving the contradiction between compact stacking and signal isolation.
3Ease of manufacture
If traditional planar antenna arrangement is used, then manufacturing is simple, but space efficiency is reduced
Solution Approach 1:
The patent moves from two-dimensional planar antenna layout to three-dimensional stacked arrangement. This dimensional transition improves space efficiency by utilizing vertical space within the terminal housing. The stacked configuration maintains manufacturing feasibility through standardized assembly processes, where antennas and support structures are positioned in defined layers, making the manufacturing process manageable despite the increased spatial complexity.
Solution Approach 2:
The patent segments the antenna system into distinct modular components arranged in separate layers. Each antenna and its associated support structure form an independent module that can be manufactured and positioned separately. This segmentation approach maintains manufacturing simplicity by allowing modular assembly while achieving superior space efficiency through the stacked configuration.
Data Source
AI summary
The present disclosure relates to an antenna structure and a mobile terminal. The antenna structure includes: a first antenna and a second antenna; wherein the first antenna is configured to radiate signals of a first frequency band; the second antenna is configured to radiate signals of a second frequency band, and the second frequency band is higher than the first frequency band; and the second antenna is stacked and disposed above the first antenna.