Dual-Surface RFID Antenna Layout for Compact Tag Communication
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Solution Overview
Problem
Existing RFID tags face challenges in achieving reduced size without compromising communication performance, as the size is reduced, the antenna area becomes too small to maintain desired communication performance.
Innovation Solution
The RFID tag is designed with an RFID antenna that includes an RFID antenna that is capable of achieving a RFID antenna that is capable of maintaining RFID tags that are capable of achieving a RFID antenna that is capable of maintaining RFID tags that are capable of maintaining RFID tags that are capable of maintaining RFID tags that are capable of maintaining RFID tags that are capable of maintaining RFID communication performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the size of the RFID tag is reduced, then the compactness is improved, but the antenna area becomes too small to achieve desired communication performance
Solution Approach 1:
The patent utilizes both front and rear surfaces of the insulating substrate to form antenna patterns, effectively transitioning from a single-surface (2D) antenna design to a dual-surface (3D) configuration. This allows the antenna patterns to be arranged in non-overlapping positions when viewed from one surface, maximizing the use of available space and increasing the effective antenna area without increasing the overall tag footprint.
Solution Approach 2:
The antenna system is divided into two separate antenna patterns formed on different surfaces of the substrate. The first antenna pattern is formed on the front surface while the second antenna pattern is formed on the rear surface, allowing each pattern to be optimized independently and connected through conductive structures that pass through the substrate.
2Power
If the main coil portions of the antenna patterns are arranged to be overlapped in plan view, then the inductance is increased, but the antenna area per unit area cannot be increased
Solution Approach 1:
The patent resolves the limitation of planar overlapping by utilizing the third dimension (depth/height) of the substrate. Antenna patterns on the front and rear surfaces can be positioned to appear overlapping when viewed from one surface, but are actually separated in the vertical dimension, allowing both high inductance through overlapping coil configurations and maximum area utilization.
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 RFID antenna is designed to achieve RFID communication performance and RFID size can be reduced.
Implementation Method 1
an RFID antenna which includes a insulating substrate and antenna patterns
Data Source
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AI summary
An RFID antenna (100) includes: an insulating substrate (110); a first antenna pattern (120) in a form of a spiral coil, the first antenna pattern (120) being provided on a first surface (111) of the insulating substrate (110); and a second antenna pattern (130) in a form of a spiral coil, the second antenna pattern (130) being provided on a second surface (112) of the insulating substrate (110) and electrically connected with the first antenna pattern (120). The first antenna pattern (120) and the second antenna pattern (130) each include a main antenna portion (1212, 1312) that is provided at a position for the first antenna pattern (120) and the second antenna pattern (130) not to be overlapped in a plan view of the first surface (111) with the second surface (112) being seen through the first surface (111).