Orthogonal Polarization Antenna Modules for Interference Reduction
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Solution Overview
Problem
In mobile electronic devices, packing multiple antennas in a limited space leads to mutual interference, compromising signal transmission and reception quality.
Innovation Solution
The antenna device includes two modules with orthogonal polarization directions, where the first module consists of horizontally polarized omnidirectional antennas arranged in an outer ring on a metallic plate, and the second module consists of inverted F antennas with vertical polarization arranged in an inner ring, maximizing distance and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple sets of antennas are packed into a limited space to enhance wireless signal transmission and reception performance, then the wireless signal transmission and reception performance is improved, but the mutual interference between antennas increases
Solution Approach 1:
The patent applies dimensional separation by arranging antennas in different spatial layers (first antenna module in a first space, second antenna module in a second space) and uses orthogonal polarization directions (horizontal vs. vertical) to create additional separation dimensions. This multi-dimensional arrangement reduces mutual interference while maintaining compact form factor, directly resolving the contradiction between packing density and interference levels.
Solution Approach 2:
The patent divides the antenna system into distinct modules (first antenna module with horizontally polarized antennas, second antenna module with vertically polarized antennas) that are spatially separated and functionally independent. This segmentation allows each module to operate with minimal interference from the other, enabling multiple antennas to coexist in limited space without compromising signal quality.
2Adaptability or versatility
If multiple sets of antennas are squeezed into the limited space of mobile electronic devices, then the device functionality is enhanced, but the mutual interference becomes more severe
Solution Approach 1:
By utilizing orthogonal polarization dimensions (horizontal vs. vertical) and spatial layering (first space vs. second space), the patent enables multiple antenna functions to coexist in a compact device without severe interference. This allows mobile devices to maintain enhanced functionality with multiple antennas while keeping the form factor limited.
Solution Approach 2:
The patent employs a composite antenna system combining different antenna types (first antennas with horizontal polarization, second antennas with vertical polarization) that work together in a unified structure. This composite approach allows diverse antenna functions to be integrated into limited device space while maintaining performance through orthogonal characteristics.
3Object-generated harmful factors
If the distance between first and second antenna modules is maximized on the first metallic plate, then the mutual interference is reduced, but the device area increases
Solution Approach 1:
The patent reduces interference not by increasing planar distance alone, but by utilizing the vertical dimension and orthogonal polarization. The first and second antenna modules are arranged in different spaces with orthogonal orientations, achieving effective interference reduction without requiring excessive lateral separation, thus maintaining compact device area.
Solution Approach 2:
The patent introduces a metallic plate as an intermediary structure that supports both antenna modules in a configured arrangement. This metallic plate enables the antennas to be positioned at optimal distances and orientations for minimizing interference while maintaining a compact overall footprint, mediating between the conflicting requirements of interference reduction and area minimization.
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 effectively reduces mutual interference between the antenna modules, achieving isolation of up to −40 dB, thereby enhancing signal transmission and reception performance.
Implementation Method 1
The first and second antennas are of different polarization directions. In one embodiment, the first antennas are horizontally polarized antennas having omnidirectional field patterns. The second antennas are inverted F antennas having a greater portion of vertical polarization.
Data Source
AI summary
The antenna device includes a first antenna module and a second antenna module. The first antenna module includes a number of first antennas disposed at intervals. The second antenna module includes a number of second antennas disposed at intervals within a space surrounded by the first antennas. The first and second antennas are of different polarization directions. In one embodiment, the first antennas are horizontally polarized antennas having omnidirectional field patterns. The second antennas are inverted F antennas. By arranging the first and second antennas along an outer ring and an inner ring respectively, the distance between the first and second antenna modules are maximized. Furthermore, by having the first and second antennas with orthogonal polarization directions, the mutual interference between the radiation energy of the first and second antenna modules is effectively reduced.