End-Fire Antenna Array for Compact Multi-Polarization Support
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Solution Overview
Problem
Antenna arrays for both horizontal and vertical polarization occupy excessive space, particularly in end-fire configurations, which is a challenge in compact electronic devices like smartphones and tablets that require efficient use of space for multiple frequency bands.
Innovation Solution
The design incorporates an end-fire antenna array with patch-type radiators for vertical polarization on a ground member and straight radiators for horizontal polarization adjacent to extension parts, with slits between the radiators to minimize space usage, allowing for efficient signal transmission and reception within a smaller footprint.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an end-fire antenna array includes both horizontal and vertical polarization radiators, then the antenna can support multiple polarizations for diverse communication needs, but the space occupied by the antenna array increases
Solution Approach 1:
The patent merges horizontal and vertical polarization radiators into a single integrated end-fire antenna array structure. The ground member with extension parts serves as a common platform for both polarization types, allowing them to share space rather than requiring separate antenna systems. This combining approach enables multi-polarization support while controlling the overall footprint of the antenna array.
Solution Approach 2:
The patent utilizes three-dimensional spatial arrangement by positioning straight radiators for horizontal polarization adjacent to extension parts of the ground member, while patch-type radiators for vertical polarization are arranged on the plane part. This vertical stacking and adjacent positioning in multiple dimensions allows both polarization types to coexist in a compact configuration, effectively transitioning from two-dimensional planar layout to three-dimensional spatial utilization.
2Area of stationary object
If the antenna array is designed for compact size, then space in electronic devices is efficiently utilized, but the radiation performance may be compromised
Solution Approach 1:
The patent applies local quality by creating distinct regions within the antenna array optimized for specific functions. The ground member with extension parts provides localized areas for horizontal polarization radiation, while the plane part with slits creates optimized regions for vertical polarization. Each local region is designed with specific geometric characteristics that enhance its radiation efficiency, ensuring that compactness does not sacrifice the radiation performance of either polarization type.
Solution Approach 2:
The patent utilizes parameter changes by introducing slits in the plane part of the ground member and adjusting the dimensions and spacing of extension parts and patch-type radiators. These geometric parameter modifications enable the compact antenna structure to achieve resonant frequencies and radiation patterns that maintain effective radiation performance despite the reduced overall size. The slits specifically alter the electrical characteristics to enhance vertical polarization radiation in the compact configuration.
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 reduces the overall space occupied by the antenna array while maintaining effective radiation performance for both polarizations, enhancing the compactness and efficiency of electronic devices without compromising signal quality.
Implementation Method 1
a plurality of patch-type radiators arranged on the plane part along the second direction and configured mainly to radiate vertical polarization in the first direction, and a plurality of straight radiators spaced apart from the ground member, respectively arranged to be adjacent to the plurality of extension parts, extending in the first direction, and configured mainly to radiate horizontal polarization in the first direction
Data Source
Figure 1
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Figure 3~4
AI summary
An antenna device includes a ground member including a plane part and a plurality of extension parts extending from one end of the plane part in a first direction and arranged along a second direction, a plurality of patch-type radiators arranged on the plane part along the second direction and configured to radiate vertical polarization, and a plurality of straight radiators spaced apart from the ground member, respectively arranged to be adjacent to the plurality of extension parts, extending in the first direction, and configured to radiate horizontal polarization.