Transponder Voltage Conversion Reducing Power Loss
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Solution Overview
Problem
Conventional RFID transponders experience high power loss and heating due to high energy levels received, especially in short-range areas, leading to inefficiencies and limitations in data transmission when antenna voltages are high, and are unable to function effectively with low antenna voltages.
Innovation Solution
A transponder circuit arrangement with load-reduction modulation and a voltage conversion device that modulates the unmodulated voltage signal between different levels, reducing power loss by providing a supply voltage greater than the initial level, using a charge pump and rectification to convert AC voltage to DC, and employing a load-reduction modulation device with variable resistance and inductive coupling to manage voltage levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If high energy levels are received by the transponder in short-range area, then power supply is sufficient for operation, but heating of the circuit arrangement occurs and power loss increases
Solution Approach 1:
The patent changes the voltage level parameter from high to low (first level instead of high level) and uses a voltage conversion device to transform the low voltage signal into a higher supply voltage, thereby reducing power loss while maintaining sufficient power supply for transponder operation
2Power
If high energy levels are received by the transponder in short-range area, then power supply is sufficient for operation, but heating of the circuit arrangement occurs
Solution Approach 1:
The patent reduces the voltage level parameter to decrease power dissipation and associated heating, while simultaneously employing a voltage conversion device to generate sufficient supply voltage from the low voltage signal, thus maintaining operational power without excessive heating
3Loss of energy
If load-reduction modulation is used with low antenna voltages, then power loss is reduced, but conventional transponders are unable to function effectively
Solution Approach 1:
The patent introduces a voltage conversion device as an intermediary component that transforms the low voltage signal from load-reduction modulation into a higher supply voltage, enabling conventional transponder circuits to function effectively with low power loss modulation schemes
4Reliability
If voltage conversion device is added to convert low voltage to higher supply voltage, then functionality is improved, but device complexity increases
Solution Approach 1:
The voltage conversion device is designed to perform multiple functions: voltage transformation, power management, and signal conditioning, thereby improving overall functionality while minimizing the increase in device complexity through multi-functional integration
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 reduces power loss and heating, enables efficient data transmission over a broader range, and maintains clocked operation even at low voltage levels, improving the transponder's performance and data range by managing voltage levels effectively.
Implementation Method 1
a voltage conversion device, which is coupled to the load-reduction modulation device and is designed to provide a supply voltage, the magnitude of whose level is greater than the first level
Implementation Method 2
A load-reduction modulation device 1 is also provided, and is coupled to the antenna connections 2, 3. The load-reduction modulation device 1 is designed to modulate the unmodulated voltage signal V23
Implementation Method 3
using a charge pump and rectification to convert AC voltage to DC
Implementation Method 4
The energy which is required for operation of the transponder is transmitted by the coupling unit to the transponder without contact
Data Source
AI summary
Transponder circuit arrangement having antenna connections for application of a voltage signal, a load-reduction modulation device, which is coupled to the antenna connections and is designed to modulate the applied, unmodulated voltage signal, which is at a first level, and a voltage conversion device, which is coupled to the load-reduction modulation device and is designed to provide a supply voltage, the magnitude of whose level is greater than the first level.