Broadband Patch Antenna Layout for Dual-Band Coupling Control
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Solution Overview
Problem
Current dual-band patch antenna designs face challenges in maximizing frequency bandwidth, especially for newer bands like n262 (47.2-48.2 GHz), while maintaining performance for legacy bands, due to limitations in optimizing low-band and high-band elements separately and the tendency towards higher coupling between bands.
Innovation Solution
The design incorporates a patch antenna array with high-band patch antennas featuring parasitic patches divided into smaller patches for enhanced electromagnetic coupling, connected via structures, and low-band patch antennas with a passive element comprising a metal ring, arranged in an interleaved configuration to optimize both low and high-band performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If dual-band patch antenna designs optimize low-band and high-band elements separately, then each band's performance is improved, but coupling between bands increases
Solution Approach 1:
The patent divides the antenna system into separate low-band and high-band patch antenna elements with distinct geometries and resonant frequencies. Each band is optimized independently through separate design parameters (patch dimensions, substrate properties), while the segmentation reduces unwanted coupling between bands by spatial and electromagnetic separation.
2Adaptability or versatility
If the frequency bandwidth is increased to support newer bands like n262, then dual-band performance is improved, but the complexity of RF transmitting circuitry increases
Solution Approach 1:
The patent designs a unified antenna system that simultaneously supports multiple frequency bands (low-band and high-band including n262) using a common substrate and integrated patch structures. The universal design achieves multi-band operation through carefully engineered resonant frequencies of different patch configurations, reducing the need for separate RF circuitry for each band.
3Adaptability or versatility
If parasitic patches are divided into smaller patches for enhanced electromagnetic coupling, then bandwidth performance is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies different gap sizes and coupling strengths at different locations of the parasitic patches. By varying the local geometry (gap width, patch size, shape) across the antenna structure, the design achieves enhanced electromagnetic coupling and bandwidth performance while accommodating manufacturing tolerances through gradual transitions rather than uniform dimensions.
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 improves bandwidth performance across both legacy and new frequency bands, such as 28 GHz, 39 GHz, and n262, by increasing coupling and reducing interference between elements, thereby enhancing overall antenna gain and efficiency.
Implementation Method 1
a plurality of via structures configured to electrically couple a respective one parasitic patch of the plurality of parasitic patches with the active element
Data Source
AI summary
Radio frequency antenna designs for mobile devices are provided. An example patch antenna element includes an active element comprising a square metallic patch disposed on a first plane, a plurality of metallic patches disposed on a second plane that is above and parallel to the first plane, wherein each of the plurality of metallic patches are separated from one another in the second plane by a gap, and a plurality of via structures disposed between the first plane and the second plane, wherein each of the plurality of via structures is configured to electrically couple a respective one metallic patch of the plurality of metallic patches with the active element.