Multiband Antenna Side Frame Partitioning for Device Size Reduction
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Solution Overview
Problem
Conventional multiband antennas in electronic devices face challenges such as increased device size due to additional patterns, interference with peripheral antennas or circuits, and reduced radiation performance due to user contact, especially for cellular communication, and decreased recognition rates in wireless payment systems.
Innovation Solution
A multiband antenna design that partitions the side frame of an electronic device using transverse and longitudinal nonconductive members to create separate radiator parts, allowing for efficient signal transmission and reception across various frequency bands without the need for additional patterns, while minimizing interference and maintaining radiation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If additional patterns are mounted to implement a multiband antenna, then multiband functionality is achieved, but the device size becomes larger
Solution Approach 1:
The side frame is designed to serve multiple functions: it acts as both a structural component and an antenna radiator that supports multiple frequency bands. By making the side frame itself multiband-capable through partitioning, the patent eliminates the need for separate additional patterns for each band, thereby achieving multiband functionality without increasing device size
Solution Approach 2:
The patent merges the structural side frame with the antenna radiation elements by partitioning the side frame into multiple radiator parts. This integration allows the side frame to simultaneously provide mechanical support and electromagnetic radiation functions across multiple bands, combining what would traditionally require separate components
2Adaptability or versatility
If additional patterns are mounted to implement a multiband antenna, then multiband functionality is achieved, but interference with peripheral antennas or circuits occurs
Solution Approach 1:
The side frame is segmented into multiple independent radiator parts by inserting nonconductive members. Each radiator part can be independently optimized for specific frequency bands, and the segmentation reduces electromagnetic coupling and interference between different bands and with peripheral components, enabling multiband operation without interference issues
3Adaptability or versatility
If the side frame is utilized as an antenna for cellular communication, then cellular communication is enabled, but radiation performance deteriorates due to contact with hand or head
Solution Approach 1:
The side frame is divided into multiple radiator parts that can be independently configured and positioned. This segmentation allows optimization of each part's radiation characteristics and placement to minimize the impact of user contact, thereby maintaining reliable cellular communication performance even when the device is held in the hand or near the head
4Adaptability or versatility
If the antenna is mounted to an interior of the electronic device for wireless payment, then wireless payment function is achieved, but recognition rate by external payment terminal decreases
Solution Approach 1:
The patent extracts the wireless payment antenna function from the interior mounting location and positions it on the exterior surface of the device. By placing the antenna where it can be directly accessed by external payment terminals, the recognition rate and communication reliability are significantly improved while maintaining the wireless payment capability
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 enhances radiation efficiency by up to 4 dB in certain bands, improves communication quality, and allows for high recognition rates in wireless payment systems by optimizing antenna placement and reducing user interference.
Implementation Method 1
a first nonconductive member inserted between the first and second conductive members to electrically isolate the first and second conductive members
Implementation Method 2
a communication circuit that performs a wireless communication by using the first conductive member and the second conductive member as radiators
Data Source
Figure 1A
Figure 1B
Figure 2A
AI summary
A multiband antenna and an electronic device including the same are provided. The electronic device includes a housing including a first surface, a second surface facing the first surface, and side surfaces surrounding a space between the first surface and the second surface, a first conductive member and a second conductive member forming at least part of the side surfaces, being parallel to the first surface, and extending parallel to each other, a first nonconductive member disposed between the first conductive member and the second conductive member to electrically isolate the first conductive member and the second conductive member from each other, and a communication circuit that performs wireless communication by using the first conductive member and the second conductive member as radiators.