Dipole-Slot Antenna Structure for Rounder Wi-Fi Coverage
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Solution Overview
Problem
Conventional Wi-Fi antenna designs face challenges in achieving simultaneous horizontal and vertical coverage, with dipole solutions providing only horizontal coverage and IFA solutions requiring board space and poor horizontal plane pattern roundness.
Innovation Solution
A combined dipole and slot antenna design featuring a balun structure with symmetrical branches and slots to enhance radiation in both horizontal and vertical directions, utilizing a U-shaped balun structure and slot coupling to improve antenna pattern roundness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If an IFA antenna solution is used, then board space is reserved, but antenna pattern roundness on horizontal plane is poor
Solution Approach 1:
The patent employs an asymmetric slot structure where the slot is positioned between the two dipole branches but extends preferentially in one direction. This asymmetric configuration, combined with the balanced feed network, creates a circular radiation pattern in the horizontal plane while maintaining compact board space utilization.
2Adaptability or versatility
If a printed dipole with folded arms and U-shape structure is used, then bandwidth for WiFi applications is produced, but antenna pattern roundness and vertical radiation are insufficient
Solution Approach 1:
The patent merges the broadband characteristics of the folded dipole structure with the vertical radiation capability of the slot antenna. The slot structure, positioned between the folded dipole branches, complements the dipole radiation to achieve both wide bandwidth for WiFi applications and improved vertical plane coverage with enhanced pattern roundness.
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 design achieves enhanced radiation in both horizontal and vertical directions, improving antenna pattern roundness and performance across 2.4G and 5G Wi-Fi bands, with improved coverage and efficiency.
Implementation Method 1
a balun structure configured to feed the radiator. The radiator includes a first branch for a first current to flow through and a second branch for a second current to flow through
Implementation Method 2
The first slot is configured to form a first horizontally-radiated electric field by the first current and a current on the balun structure. The second slot is configured to form a second horizontally-radiated electric field by the second current and the current on the balun structure
Data Source
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AI summary
This application provides an antenna and an electronic device. The antenna is a combination of a dipole antenna and a slot antenna, and the antenna includes a radiator and a balun structure. The radiator includes a first branch for a first current to flow through and a second branch for a second current to flow through. The first branch and the second branch are arranged on two opposite sides of the balun structure, and serve as two branches of the dipole antenna. A direction of the first current is at least partially opposite to that of the second current. The first branch is spaced from the balun structure by a first slot. The second branch is spaced from the balun structure by a second slot. The first slot is configured to form a first horizontally-radiated electric field by the first current and a current on the balun structure. The second slot is configured to form a second horizontally-radiated electric field by the second current and the current on the balun structure. Through coordination of the slots with the first branch and the second branch, radiation in both horizontal and vertical directions of the antenna is enhanced and antenna pattern roundness is increased.