Nested Slot Antenna for Multi-Band Wireless Communication
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Solution Overview
Problem
The challenge is to design an antenna device that can provide stable radiation performance while occupying a small space for installation, particularly in electronic devices that require multiple frequency bands for ultra-high-speed wireless communication, where interference between radiators is a concern.
Innovation Solution
The antenna device includes a first radiator with a slot and a second radiator, at least a portion of which is disposed in the slot, both fed with the same electricity, allowing them to operate independently and form resonance frequencies in different frequency bands, thus minimizing space requirements and preventing mutual interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple radiators are installed to support multiple frequency bands, then wireless communication capability is improved, but device space requirement increases
Solution Approach 1:
The patent implements nesting by placing the second radiator inside the slot of the first radiator. The slot is formed by removing a portion of the first radiator, creating a cavity that accommodates the second radiator. This nested configuration allows multiple radiators for different frequency bands to coexist in a compact space, resolving the contradiction between supporting multiple frequency bands and minimizing device space.
Solution Approach 2:
The patent utilizes the dimensional space created by the slot in the first radiator to accommodate the second radiator. By transforming the two-dimensional surface of the first radiator into a three-dimensional structure with an internal cavity, the patent enables placement of additional radiators without increasing the external footprint, thus supporting multiple frequency bands within limited space.
2Area of stationary object
If multiple radiators are installed in close proximity, then space efficiency is improved, but mutual interference between radiators increases
Solution Approach 1:
The patent segments the radiation function by creating distinct radiators (first and second radiators) that operate in different frequency bands. Each radiator is designed to resonate at specific frequencies, and their spatial separation through the slot structure minimizes coupling and mutual interference. This segmentation allows compact placement while maintaining independent operation of each radiator for its designated frequency band.
Solution Approach 2:
The patent applies local quality by designing the slot with specific dimensions and positioning the second radiator at particular locations within the slot. These localized structural features are optimized to control electromagnetic field distribution, reduce coupling between radiators, and minimize mutual interference while maintaining compact overall dimensions for high space efficiency.
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 enables efficient installation of radiators in a small space, maintaining stable radiation performance and allowing for wireless communication across various frequency bands without interference, optimizing the use of internal device space.
Implementation Method 1
the first radiator and the second radiator form resonance frequencies in different frequency bands
Data Source
AI summary
An antenna device and an electronic device including the same are provided. The antenna device includes a first radiator in which a slot is formed, a second radiator, at least a portion of which is disposed in the slot, and a feeder configured to feed the same electricity to the first radiator and the second radiator. The antenna device may have many resonance frequencies in the same installation space, allowing efficient use of the internal space of the electronic device. Moreover, the antenna device and the electronic device including the same may be implemented variously according to various embodiments.