Multi-Feeding Antenna PCB Isolation for Slim MIMO Devices
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Solution Overview
Problem
Slim electronic devices face challenges in maintaining radiation efficiency across multiple frequency bands due to performance degradation caused by interference from display regions and structural restrictions, making it difficult to apply multiple-input multiple-output (MIMO) methods effectively.
Innovation Solution
A multi-feeding antenna design that uses a conductive pattern on a printed circuit board (PCB) with isolation patterns to electrically connect different antenna regions, allowing operation in multiple bands while minimizing interference by employing matching circuits and low pass filters to ensure high EM isolation and efficient radiation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple antennas are used for MIMO method, then data processing speed and reliability are improved, but device volume and complexity increase
Solution Approach 1:
The patent combines multiple antenna functions into a single antenna structure that supports both 2.4GHz and 5GHz frequency bands. The antenna uses a unified radiator design with feeding structures that enable dual-band operation, eliminating the need for separate antennas for each frequency band and MIMO stream, thereby reducing device volume while maintaining reliability
Solution Approach 2:
The antenna is designed to perform multiple functions simultaneously: it operates in both 2.4GHz and 5GHz bands, supports multiple input multiple output (MIMO) transmissions, and provides isolation between different frequency bands. This multi-functional design allows a single antenna to replace what would traditionally require multiple separate antenna elements
2Adaptability or versatility
If antenna radiation pattern is formed only in structure with display region extension, then device design flexibility is improved, but radiation efficiency degrades
Solution Approach 1:
The patent introduces an isolation pattern as an intermediary structure between the antenna radiator and the display region. This isolation pattern acts as a mediator that reduces electromagnetic interference from the display region while allowing the antenna to maintain its radiation efficiency. The isolation pattern is designed with specific electrical characteristics that block harmful interactions without significantly affecting the antenna's radiation performance
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 multi-feeding antenna design enhances radiation efficiency and maintains performance across multiple frequency bands, reducing interference and allowing for a slimmer device form factor by effectively isolating antenna regions and filtering out unwanted frequencies.
Implementation Method 1
A multi-feeding antenna design that uses a conductive pattern on a printed circuit board (PCB) with isolation patterns to electrically connect different antenna regions, allowing operation in multiple bands while minimizing interference
Implementation Method 2
employing matching circuits and low pass filters to ensure high EM isolation and efficient radiation
Data Source
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AI summary
Disclosed is an electronic device which may provide a multi-feeding antenna operating in multiple frequency bands by reducing performance degradation, and can contribute to slimness by implementing at least a portion of the patterns in a printed circuit board.