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Maximum Power Transfer

Maximum Power Transfer

Numerous practical applications within engineering disciplines, such as telecommunications, necessitate optimizing power delivery to a connected load. This pursuit, however, entails inherent internal losses, which can either equal or exceed the power supplied to the load. The Thevenin equivalent circuit is helpful in finding the maximum power a linear circuit can deliver to a load. It is assumed in this context that the load resistance can be adjusted.
By substituting the entire circuit with...

The Maximum Power Transfer Theorem

The Maximum Power Transfer Theorem

Consider a linear AC Thevenin equivalent circuit connected to a load impedance.
The load connected draws the current, and the circuit delivers the power to the load. The alternating current flowing through the load is determined using the rectangular form of voltages, currents, network impedance, and load impedance. The average power delivered to the load is obtained from the product of the square of current and load resistance.

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Quasi-light Storage for Optical Data Packets

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High-performance laser power converts for wireless information transmission applications.

Yudan Gou, Hao Wang, Jun Wang

|October 20, 2023

Summary

This study introduces a new testing method for Laser Power Converters (LPCs) used in laser wireless power transmission. Researchers achieved over 60% conversion efficiency and a 1.7 µs response time for wireless information transmission.

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Area of Science:

Optoelectronics
Wireless Power Transmission
Semiconductor Devices

Background:

Laser Power Converters (LPCs) are crucial for laser wireless power transmission (LWPT).
Evaluating LPC performance under various conditions is essential for system optimization.
Six-junction Gallium Arsenide (GaAs) devices are promising for high-efficiency power conversion.

Purpose of the Study:

To develop a comprehensive testing methodology for six-junction GaAs LPCs.
To assess LPC performance with varying device areas.
To demonstrate the application of LPCs in wireless information transmission.

Main Methods:

Utilized continuous, pulse-pause, and short-time testing techniques.
Evaluated six-junction GaAs Laser Power Converters (LPCs) at an 808 nm optical input.
Investigated the impact of different LPC areas on performance.
Integrated LPCs into a wireless information transmission system.

Main Results:

Achieved a conversion efficiency exceeding 60% for the LPCs.
Demonstrated successful wireless information transmission.
Recorded a rapid response time of 1.7 µs for information transmission.

Conclusions:

The proposed comprehensive test method effectively evaluates LPC performance.
Six-junction GaAs LPCs with varying areas show high efficiency and fast response times.
LPCs are viable for high-performance wireless information and power transmission applications.