Passive sensor system powered by wireless power transmission

Posted by UACOOPERA from uacooperaResponsive · Patents for licensing · Portugal

Summary of the technology

Network of wireless and passive sensors (without batteries), using a set of unique sensors which use a frequency for the data transfer (obtained by sensors) and another frequency for the reception of energy that is emitted by transmitters that power the sensors. For this, only a central data reception and wireless transmission structure is required which communicates with each of the sensors independently. These sensors have lower power consumption and higher data rates (up to 960 Mb/s).

UATEC - Unidade de Transferência de Tecnologia


Wireless sensors, which transmit the collected information without the need of wiring, have gained increasing commercial importance. These sensors can be used in a wide range of situations, from environmental monitoring to farm and industrial control. However, most sensors still need to use batteries, which increases maintenance and environmental costs.

The presented sensors are an alternative since they do not require any type of battery and receive energy through a specific frequency emitted by an energy transmitter. These passive sensors gain even more relevance if sensor networks are formed, in which several nearby sensors detect and transmit environmental data.


Compared to traditional sensors:

LOWER COST: these sensors do not use any kind of batteries.

INCREASED CONVENIENCE: these sensors do not require battery charge or change as well as wiring.

Compared to other passive sensors:




This passive sensor system can be used in a wide range of applications, such as:

Collection of environmental data (e. g. farm fields, inside buildings)

Accesses control (e. g. parking lots, buildings)

Applications that require high transmission rates (e. g. audio or video sensors)


TRL 4: Field tests performed with prototypes.



Wireless power transmission

Passive sensors


Researchers from the Telecommunications Institute (IT) from the University of Aveiro.


License agreement.

Joint development.

Adaptation to specific needs.

Testing of new applications.



The University of Aveiro seeks partners with the area of sensor development and manufacturing.

Intellectual property status

Technology Owner


Technology Transfer Office

UACOOPERA University of Aveiro

Technology Transfer Office at uacoopera

Additional information (attached documents)

Related keywords

  • Electronics, IT and Telecomms
  • Internet of Things
  • Telecommunications, Networking
  • Sensors & Wireless products
  • Agriculture and Marine Resources
  • Agriculture
  • Communications
  • Data Communications
  • Power Supplies
  • Power transmission equipment (including generators and motors)

About uacoopera

Technology Transfer Office from Portugal

The University of Aveiro is a young and innovative university, which fosters entrepreneurship and technology and knowledge transfer, with expertise in a wide range of knowledge areas namely IT, Life Sciences (Biology, Chemistry, Biochemistry, Health, Environmental Sciences), Nanotechnology and Materials Science, Mechanics, Physics, Mathematics, Building, Design and Management. uacoopera is the Technology Transfer Office of University of Aveiro. This office engages in value adding activities such as start-up and spin-off creation, support to university-industry cooperation (sponsored research and consultancy services), IP protection and prosecution, licensing, marketing, among others. It covers four main interrelated functional areas – Intellectual Property Management, Licensing, Entrepreneurship, and Industry Liaison.

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