Planar Vertical-Polarized Antenna With Cavity-Enhanced End-Fire Radiation
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Solution Overview
Problem
In 5G mobile communication systems using the mmWave band, existing vertical polarization antennas face challenges in signal attenuation due to polarization loss, especially in terminals with slim planar structures, where height constraints limit the application of current antenna designs, leading to potential wireless link loss.
Innovation Solution
A new vertical polarization antenna structure combining an aperture antenna with a cavity structure, designed to minimize height while maintaining strong forward-oriented end-fire radiation patterns, effectively blocking rearward radiation and resonating it to enhance forward radiation, thus reducing signal attenuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing vertical polarization antenna structures are used, then polarization loss is reduced, but the antenna height becomes too large for slim planar terminal structures
Solution Approach 1:
The patent transitions from a conventional three-dimensional vertical antenna structure to a two-dimensional planar aperture antenna structure. By utilizing the aperture area in the planar terminal surface rather than extending vertically, the antenna achieves vertical polarization radiation patterns without requiring significant height, thus resolving the contradiction between maintaining reliable vertical polarization and adapting to slim terminal form factors.
Solution Approach 2:
The patent employs a可调 (tunable) feed structure that can dynamically adjust the phase and amplitude of electromagnetic waves fed to different regions of the aperture. This dynamic control enables the antenna to optimize its radiation pattern and maintain vertical polarization characteristics while adapting to the constrained planar geometry of slim terminals.
2Adaptability or versatility
If antenna height is reduced for slim terminals, then adaptability to terminal structure is improved, but signal attenuation increases due to polarization loss
Solution Approach 1:
The patent divides the aperture into multiple regions with different feed characteristics, applying local quality optimization to each region. By controlling the phase and amplitude distribution across different local areas of the aperture, the antenna achieves constructive interference in the vertical polarization direction while minimizing signal loss, thus maintaining low attenuation despite the reduced overall height.
Solution Approach 2:
The patent utilizes adjustable feed parameters including phase shift, amplitude control, and feed position to optimize the radiation pattern. By dynamically changing these parameters, the antenna maintains effective vertical polarization radiation with minimal signal attenuation while adapting to the constrained planar geometry of slim terminals.
3Stability of the object's composition
If conventional vertical polarization antenna designs are used, then polarization stability is maintained, but the antenna cannot be effectively integrated into planar terminal structures
Solution Approach 1:
The patent resolves the shape contradiction by transforming the antenna from a vertical three-dimensional structure to a two-dimensional planar aperture structure. This dimensional change allows the antenna to be integrated into the planar terminal surface while maintaining vertical polarization stability through controlled electromagnetic field distribution across the aperture plane.
Solution Approach 2:
The patent creates a universal antenna structure that can be integrated into various planar terminal designs regardless of specific terminal dimensions. The planar aperture configuration with可调 (tunable) feed parameters provides multi-functionality, enabling the same basic structure to adapt to different terminal form factors while maintaining stable vertical polarization characteristics.
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
The proposed antenna structure achieves improved antenna performance with a high front-to-back ratio and low cross-polarization characteristics, suitable for slim planar structures, minimizing signal loss and enabling efficient communication in mobile devices.
Implementation Method 1
resonating it to enhance forward radiation
Implementation Method 2
strong forward-oriented end-fire radiation patterns
Data Source
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AI summary
The present disclosure provides technology that proposes an ultra-high frequency band (mmWave band) vertical polarization antenna having a new structure applicable to a slim planar structure (e.g., a terminal).