Planar Inverted F Antenna Pair With Broadband Decoupling
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Solution Overview
Problem
The integration of Wi-Fi 6 and Wi-Fi 6E antennas in compact designs leads to significant signal interference due to the narrow frequency gap between the two standards, necessitating effective decoupling solutions.
Innovation Solution
A planar inverted F antenna pair is designed with asymmetric feed portions and strategically placed slots on the ground metal plane to achieve broadband decoupling, allowing the antennas to operate in different frequency bands with minimal additional complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If two antenna systems are compactly placed to support Wi-Fi 6 and Wi-Fi 6E standards, then the device size is reduced, but serious signal interference occurs between the antennas
Solution Approach 1:
A ground metal sheet is introduced as an intermediary element between the two antenna systems. This ground metal sheet acts as a mediator to isolate the electromagnetic fields of the two antennas, reducing mutual interference while maintaining compact device dimensions. The ground metal sheet is positioned between the antennas and connected to the ground plane, creating an electromagnetic barrier that prevents signal coupling between the Wi-Fi 6 and Wi-Fi 6E antennas.
2Object-generated harmful factors
If a decoupling structure is added to reduce signal interference, then signal isolation is improved, but device complexity increases
Solution Approach 1:
The ground metal sheet serves multiple functions simultaneously: it acts as a decoupling element to reduce interference, provides grounding for the antenna system, and maintains the structural integrity of the compact design. By making the ground metal sheet multi-functional, the patent avoids adding separate dedicated decoupling structures, thus reducing overall device complexity while achieving effective signal isolation.
3Adaptability or versatility
If asymmetric feed portions are used to achieve broadband decoupling, then frequency band separation is improved, but manufacturing precision requirements increase
Solution Approach 1:
The patent employs asymmetric feed portion parameters (different lengths, widths, or positions) to achieve broadband decoupling and frequency band separation. By carefully selecting and optimizing these geometric parameters, the design enables the two antennas to operate in different frequency bands (Wi-Fi 6 and Wi-Fi 6E) with reduced interference. The parameter optimization process balances the need for frequency separation with manufacturability constraints.
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 solution effectively decouples the antennas, achieving high isolation and compact structure support for both Wi-Fi 6 and Wi-Fi 6E standards, reducing signal interference and maintaining efficient operation across a broad frequency range.
Implementation Method 1
two back-to-back planar inverted F antennas are formed... so that the two antennas can work within different working frequency bands
Implementation Method 2
the two inverted F antennas can be both coupled with the slot to excite the slot, and by designing an appropriate slot size, broadband decoupling of the two antennas is realized
Data Source
AI summary
This application discloses a planar inverted F antenna pair and an electronic device, and relates to the field of antenna technologies. The planar inverted F antenna pair includes a dielectric substrate, a ground metal plane, and a radiation unit, where the ground metal plane is arranged on a side of the dielectric substrate, two ends of the radiation unit are respectively connected to a first feed portion and a second feed portion, the radiation unit is connected to the ground metal plane through a ground metal sheet, the ground metal sheet is located between the first feed portion and the second feed portion, distances from the first feed portion and the second feed portion to the ground metal sheet are not equal, the ground metal plane is provided with a slot, and two ends of the slot are located on two sides of the ground metal sheet.