Dual-Rectifier IC for UHF RFID and NFC Signal Processing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional integrated circuits are limited in their ability to communicate and process both UHF RFID and NFC signals using a single device, as they are typically designed to handle only one type of signal, leading to inefficiencies in signal processing and data management.
Innovation Solution
An integrated circuit that includes both UHF RFID and NFC tag physical layers, a microcontroller unit, non-volatile memory, and a detector to rectify and process signals from either UHF RFID or NFC signals, allowing for efficient data processing and communication using a shared silicon substrate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single integrated circuit is designed to handle both UHF RFID and NFC signals, then device integration and versatility are improved, but signal detection and processing complexity increases
Solution Approach 1:
The patent implements a single integrated circuit that can process both UHF RFID and NFC signals by incorporating dual rectifiers (first rectifier for UHF RFID, second rectifier for NFC), a detector with multiple detection paths, and a microcontroller unit that can identify and handle different signal types. This multi-functional design allows one device to replace what would traditionally require separate dedicated circuits for each signal type.
Solution Approach 2:
The integrated circuit is segmented into distinct functional modules: a first rectifier dedicated to UHF RFID signal rectification, a second rectifier for NFC signal rectification, a detector with separate detection paths for each signal type, and a microcontroller unit. This segmentation allows each component to be optimized for its specific function while maintaining overall system integration and manageability.
2Device complexity
If separate integrated circuits are used for UHF RFID and NFC signals, then signal processing simplicity is maintained, but device integration and efficiency deteriorate
Solution Approach 1:
The patent merges the UHF RFID processing circuit and NFC processing circuit into a single integrated circuit device. The detector combines multiple detection paths to simultaneously monitor both signal types, and the microcontroller unit centrally manages both signal processing tasks. This merging eliminates the need for separate physical devices, improving integration efficiency and reducing system complexity.
3Measurement precision
If the integrated circuit detects and processes the correct rectified voltage, then signal processing accuracy is improved, but detection complexity increases
Solution Approach 1:
The detector acts as an intermediary component that receives rectified voltages from both the first rectifier (UHF RFID path) and the second rectifier (NFC path), identifies which signal type is present based on voltage characteristics, and routes the appropriate voltage to the microcontroller unit. This intermediary detection mechanism enables accurate signal type identification and processing without requiring complex integrated detection logic throughout the entire circuit.
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
Enables efficient detection and processing of rectified voltages for both UHF RFID and NFC signals, improving signal processing efficiency and allowing a single integrated circuit to handle both types of signals, thereby enhancing data management and communication capabilities.
Implementation Method 1
a UHF RFID tag physical layer that rectifies a UHF RFID signal acquired through a first antenna using a first rectifier to generate a first DC voltage
Implementation Method 2
an NFC tag physical layer that rectifies an NFC signal acquired through a second antenna to generate a second DC voltage
Implementation Method 3
a detector that detects a voltage input of one of the first DC voltage and the second DC voltage
Data Source
AI summary
An integrated circuit is disclosed. The integrated circuit includes a UHF RFID tag physical layer that rectifies a UHF RFID signal acquired through a first antenna using a first rectifier to generate a first DC voltage, an NFC tag physical layer that rectifies an NFC signal acquired through a second antenna to generate a second DC voltage, a microcontroller unit, a non-volatile memory that stores data processed and data to be processed by the UHF RFID tag physical layer, and data processed and data to be processed by the NFC tag physical layer under control of the microcontroller unit, and a detector that detects a voltage input of one of the first DC voltage and the second DC voltage, and supplies the detected DC voltage to one of the UHF RFID tag physical layer and the NFC tag physical layer, the microcontroller unit, and the non-volatile memory.