Monolithic Transceiver Antenna Ferrite Substrate
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Solution Overview
Problem
Existing RFID tags face challenges in miniaturization due to the separate production and integration of antennas, which increases costs and limits communication range due to poor antenna coupling and power transfer efficiency.
Innovation Solution
A transceiver device with a substrate containing dielectric or magnetic material of high relative permeability, where the antenna is monolithically integrated, effectively increasing its electromagnetic length without geometric expansion, allowing for efficient power transmission and reduced manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the antenna is implemented as a separate passive component, then the antenna can be optimized for electromagnetic radiation, but the manufacturing cost increases and the device size increases
Solution Approach 1:
The patent merges the antenna structure with the semiconductor chip by integrating the antenna into the chip substrate. The antenna is formed as part of the chip structure using standard semiconductor manufacturing processes, eliminating the need for separate antenna components and reducing assembly steps. This integration directly reduces manufacturing cost while maintaining electromagnetic radiation functionality.
2Volume of moving object
If the antenna is miniaturized to reduce device size, then the RFID tag can be more compact, but the electromagnetic radiation power decreases
Solution Approach 1:
The patent changes the electromagnetic parameters of the antenna by introducing a ferrite layer with high magnetic permeability (μr > 1) between the antenna conductors and the substrate. This ferrite layer concentrates and enhances the electromagnetic field, increasing the radiated power despite the miniaturized antenna dimensions. The high permeability material effectively compensates for the reduced antenna length and area.
Solution Approach 2:
The patent employs a composite structure combining the antenna conductors, ferrite layer, and substrate into an integrated antenna system. The ferrite layer (with μr > 1) is positioned between the antenna elements and the substrate, creating a composite structure that enhances electromagnetic radiation efficiency. This composite approach allows miniaturization while maintaining or improving radiated power through the synergistic combination of materials.
3Ease of manufacture
If the antenna is integrated into the chip, then the manufacturing cost is reduced, but the coupling to the external electromagnetic field deteriorates
Solution Approach 1:
The patent introduces a ferrite layer as an intermediary element between the integrated antenna conductors and the external electromagnetic field. This ferrite layer with high magnetic permeability acts as a mediator that enhances the coupling between the miniaturized antenna and the external field. The ferrite layer concentrates the electromagnetic flux and improves the antenna's interaction with external readers, compensating for the limitations of integration.
4Length of stationary object
If the antenna length is reduced below λ/4, then the RFID tag can be miniaturized, but the radiated power decreases distinctly
Solution Approach 1:
The patent changes the electromagnetic parameters by introducing a ferrite layer with high magnetic permeability (μr > 1) in the antenna structure. This modification allows the antenna to operate effectively with lengths shorter than λ/4 while maintaining adequate radiated power. The high permeability material enhances the electromagnetic field concentration and radiation efficiency, compensating for the reduced antenna length.
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 solution enables miniaturized RFID tags with improved electromagnetic power transmission and reduced production costs, enhancing communication range and efficiency while maintaining small geometric dimensions.
Implementation Method 1
an antenna monolithically integrated in the substrate on and/or in the layer, which antenna is arranged for transmitting and for receiving signals
Implementation Method 2
a layer of dielectric material with a relative permeability greater than 1 and/or with magnetic material with a relative magnetic permeability of greater than 1
Implementation Method 3
dielectric or magnetic material of high relative permeability or magnetic permeability
Data Source
AI summary
One aspect of the invention relates to a transceiver device with a substrate with a layer of dielectric material with a relative permeability of greater than 1 and/or with a magnetic material with a relative magnetic permeability of greater than 1. An antenna is monolithically integrated in the substrate and/or in the layer, and the antenna is arranged for transmitting and for receiving signals. A circuit is monolithically integrated in the substrate which is coupled to the monolithically integrated antenna.