Multi-Band Antenna Layout to Prevent Radiation Interference
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Solution Overview
Problem
Existing electronic devices require separate configurations for mobile communication and high-frequency applications, limiting their ability to use both simultaneously and hindering functionality, especially in devices like smartphones.
Innovation Solution
An electronic device design incorporating multiple antennas with distinct frequency bands, including a first antenna for 400 MHz-3000 MHz, a second antenna wound multiple times for 3 MHz-30 MHz, and a third antenna for 3 GHz-100 GHz, with a conductive pattern spaced apart to optimize radiation performance and allow simultaneous use of different frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antennas for different frequency bands are disposed in the internal space, then the electronic device can support multiple wireless communication services simultaneously, but the antennas may interfere with each other and degrade radiation performance
Solution Approach 1:
The second antenna is configured to extend in a direction substantially perpendicular to the first antenna, utilizing three-dimensional space within the internal space. This spatial arrangement in different dimensions reduces electromagnetic interference between antennas operating at different frequency bands while maintaining compact form factor
Solution Approach 2:
The internal space is divided into distinct regions for different frequency band antennas. The first antenna is disposed in a first region and the second antenna in a second region, with each antenna optimized for its specific frequency band, allowing simultaneous operation with minimal interference
2Device complexity
If multiple antennas are disposed close to each other in the internal space, then the device complexity is reduced, but the antennas interfere with each other causing poor radiation performance
Solution Approach 1:
Instead of placing antennas close together in the same plane, the second antenna extends perpendicular to the first antenna, utilizing the third dimension (depth/thickness) of the internal space. This maintains compact overall dimensions while ensuring adequate electromagnetic isolation between antennas
Data Source
AI summary
An electronic device includes a housing including an internal space, a display disposed in the internal space, the display being visible from an outside of the electronic device through at least a part of the housing, at least one first antenna disposed in the internal space, a second antenna disposed in the internal space and wound multiple times and including a conductive pattern disposed to be spaced apart from the first antenna, a first wireless communication circuit configured to transmit or receive a wireless signal in a first frequency band via the at least one first antenna, and a second wireless communication circuit configured to transmit or receive a wireless signal in a second frequency band via the second antenna, wherein the at least one first antenna is spaced apart by a distance from the conductive pattern.