Printable Chipless RFID Tag With Quadrilateral Open Resonators
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Solution Overview
Problem
Traditional RFID tags face challenges in stability, reliability, manufacturing time, cost, and encoding capacity in complex environments, while chipless RFID tags need improvements in reading distance and encoding density.
Innovation Solution
A frequency domain-based printable chipless RFID tag using a quadrilateral open resonator structure with a rectangular dielectric substrate, metal grounding layer, and symmetrical antennae, manufactured via a microelectronic printer, allowing for adjustable capacitance and inductance to encode data and achieve high encoding density and miniaturization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional RFID tags are used, then data acquisition and information transmission are achieved, but stability and reliability deteriorate in complex environments
Solution Approach 1:
The patent adopts a chipless RFID tag design that eliminates the need for complex integrated circuit chips, using instead simple printed resonator structures on flexible substrates. This disposable-like approach with simple printed structures significantly improves reliability in harsh environments while maintaining adaptability through various resonator configurations.
2Ease of manufacture
If traditional RFID tags are used, then RFID functionality is achieved, but manufacturing period increases and costs increase
Solution Approach 1:
The patent replaces complex mechanical chip assembly processes with direct printing of resonator structures onto substrates using printing techniques. This substitution dramatically reduces manufacturing periods and costs while improving productivity, as the entire tag can be printed in a single process without separate chip mounting steps.
Solution Approach 2:
The patent employs parameter changes in the resonator design, such as adjusting the number and position of notches, to encode different information. This allows multiple tag variants to be produced from the same basic structure through parameter modification, reducing manufacturing complexity and cost.
3Loss of information
If chipless RFID tags are used, then coding capacity and miniaturization are improved, but reading distance deteriorates
Solution Approach 1:
The patent segments the resonator structure into multiple independent resonant elements (e.g., four groups of quadrilateral open resonance units) with different resonant frequencies. This segmentation enables higher coding capacity through frequency modulation while the overall compact arrangement maintains miniaturization. The segmented design also improves reading distance by providing multiple frequency channels for signal detection.
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 tag offers a low-cost, reusable solution with high encoding capacity, miniaturization, and improved stability, supporting a wide frequency band and enhanced scalability, suitable for complex environments.
Implementation Method 1
four groups of quadrilateral open resonance units and two parallel symmetrical antennae are disposed above the rectangular dielectric substrate
Implementation Method 2
The RFID technology implements data acquisition and information transmission by means of electromagnetic signals
Data Source
AI summary
Provided is a frequency domain-based printable chipless radio frequency identification (RFID) tag of a quadrilateral open resonator, and belongs to the field of radio frequency identification. The frequency domain-based printable chipless RFID tag of a quadrilateral open resonator includes a rectangular dielectric substrate having a metal grounding layer disposed at a bottom thereof. Four groups of quadrilateral open resonance units and two parallel symmetrical antennae are disposed above the rectangular dielectric substrate, and each group of quadrilateral open resonance units are symmetrically disposed on two sides of the two parallel symmetrical antennae. The present disclosure utilizes the quadrilateral open resonator to encode data, and capacitance and inductance of the resonance unit can be adjusted, so that the tag has the advantages of convenient encoding, high encoding density, and miniaturization.