Optimized circuit for high frequency energy harvesting
A German university developed a device that improves the harvesting of electromagnetic radiation. It increases the efficiency at low power and enlarges the dynamic range. The university offers a license agreement and a technical cooperation agreement to industrial partners.
The university offers a license agreement to semiconductor manufacturers. The licensee will be in charge of the transfer to market maturity. A technological cooperation is offered if the partner is interested in further development of the application together with the university. The university will then offer research and development support for the transfer to market maturity.
A German university offers a dynamic range extender for the recovery of electrical energy from electromagnetic radiation. There are different approaches to power electronic devices. Possibilities exist to charge via the so-called "energy harvesting" batteries or to provide a direct source of energy. As an example: the energy of electromagnetic radiation in the 2.4 GHz band can be used for this. However, the efficiency of such devices decreases rapidly with decreasing power. The basic structure of this invention is the balanced rectifier as it can be seen in the picture. It consists of a quadrature coupler and two rectifiers. Even in a significantly lower power range (improvement by 10 to 15dB) a high efficiency in energy production can still be achieved. The dynamic range extender can be used in many areas. It can extend the life of electronic devices or provide power to sensors. The university offers a license agreement to semiconductor manufacturers. A technical cooperation is offered to further develop the application.
Advantages and innovations
The efficiency of conventional devices harvesting energy decreases rapidly with decreasing power. The invention presented here increases the efficiency at low power and enlarges the dynamic range. Furthermore it has a simple construction and can be used in many areas.
Prototype available for demonstration
Intellectual Property Rights (IPR)
Patent(s) applied for but not yet granted
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