Dual-Polarized Patch Antenna Layout for Low-Profile Display Integration
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Solution Overview
Problem
Existing antennas face challenges in being integrated into display modules of electronic devices due to limited thickness, leading to issues with profile, bandwidth, and isolation, making it difficult to support 5G communication bands effectively.
Innovation Solution
The integration of an array antenna with a low profile and high bandwidth, designed as a metasurface antenna, which is compatible with display modules, supporting 5G bands and other wireless communication frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a conventional antenna is used in a smartphone, then communication function is provided, but the antenna occupies significant space and limits device miniaturization
Solution Approach 1:
The patch antenna is integrated within the battery assembly structure, nesting the antenna function inside the existing battery housing. The antenna is positioned in the battery housing away from the battery cell, utilizing the available space within the nested battery assembly structure to provide communication function without increasing overall device footprint.
Solution Approach 2:
The antenna design transitions from traditional planar configurations to a three-dimensional integration within the battery housing volume. By utilizing the vertical and lateral dimensions within the battery assembly, the antenna achieves compact form factor while maintaining effective radiating area through strategic positioning and ground plane design.
2Area of stationary object
If antenna size is reduced for device miniaturization, then device compactness is improved, but antenna performance and communication reliability deteriorate
Solution Approach 1:
The antenna design optimizes local electromagnetic properties by strategically positioning the patch antenna and ground plane within the battery housing. The ground plane is configured with specific dimensions and positioning to enhance antenna performance, while the antenna is placed in a location that maximizes radiating efficiency within the constrained space of the battery assembly.
Solution Approach 2:
The antenna design adjusts key parameters including patch dimensions, ground plane size and positioning, and spacing from the battery cell to optimize performance within the compact battery housing. These parameter optimizations enable the antenna to maintain effective communication performance despite the reduced available space compared to conventional antenna designs.
3Area of stationary object
If antenna is integrated within battery assembly, then device miniaturization is achieved, but heat generation from battery may affect antenna performance
Solution Approach 1:
The antenna is extracted from direct contact with the battery cell and positioned in a separate region of the battery housing. This spatial separation isolates the temperature-sensitive antenna from the heat-generating battery cell, allowing the antenna to operate in a cooler microenvironment while still being integrated within the overall battery assembly structure.
Solution Approach 2:
The battery housing structure serves as an intermediary thermal barrier between the battery cell and the antenna. By positioning the antenna within the housing away from the cell, the housing material acts as a thermal buffer that protects the antenna from direct heat exposure while maintaining the compact integrated design.
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 array antenna provides stable wireless communication while maintaining a thin profile, ensuring compatibility with display modules and supporting multiple communication bands, including 5G frequencies.
Implementation Method 1
Wireless communication is achieved through electromagnetic waves. The electromagnetic waves are transmitted and received by antennas.
Data Source
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AI summary
This application discloses a patch antenna and an electronic device. The patch antenna includes a plurality of patch units, a first feeding branch, and a second feeding branch. The plurality of patch units are symmetric relative to a virtual symmetry axis. The plurality of patch units are arranged at intervals. A gap is formed between adjacent patch units, and the adjacent patch units are coupled through the gap. The first feeding branch and the second feeding branch are symmetric relative to the symmetry axis, and each of the first feeding branch and the second feeding branch is electrically connected to at least one of the plurality of patch units. The first feeding branch is configured for a first polarization of the patch antenna, and the second feeding branch is configured for a second polarization of the patch antenna. By coupling the plurality of patch units, the patch antenna may have a low profile, so that the patch antenna is disposed in a display module. In addition, the patch antenna may further support millimeter wave bands such as n257 and n258, or may support another communication or data transmission requirement.