Testing the T-shirt antenna

Jun 30, 2011
Testing the T-shirt Antenna
NPL's Dr Tian Hong Loh in the SMART chamber

NPL worked with BAE Systems Advanced Technology Centre, to measure the pattern and efficiency of radiation emitted from next generation wearable antennas embedded in T-shirts.

Wearable antennas could be the future of wireless technology and have important applications in communications, security and healthcare, but as they are worn on the body it is particularly important to understand their performance. The human body absorbs electromagnetic signals and so there are concerns that the emitted signal from the could suffer from power losses if worn too close.

The research tested a number of novel measurement techniques that could help the development of this exciting new technology, including measuring the radiation absorbed by a 'human dummy', designed from material that mimics the characteristics of human tissue.

Dr James Matthews, Principal Engineer, BAE Systems Advanced Technology Centre, said:

"NPL provided an excellent quality set of measurements, despite the difficulties inherent in wearable antenna technology. NPL took time to understand the requirements and took a proactive approach to the challenge, providing wider ranging measurements than originally anticipated."

NPL facilities used during the research included the Reverberation Chamber, Fully Anechoic Small Antenna Radiated Testing (SMART) Range, the EMC Ferrite Lined Fully Anechoic Room (FAR) and specific absorption rate (SAR) facilities.

The collaborative research revealed that there is an optimum distance for the position of the antenna in relation to the body, which can improve the antenna's efficiency. This information, when integrated into antenna design, will help developers produce better products.

Explore further: Managing the “Internet of Things

Related Stories

NIST antenna calibrations extended to 60-110 GHz

May 25, 2007

The National Institute of Standards and Technology (NIST) has developed a new "tabletop" sized facility to improve characterization of antennas operating in the 60 to 110 gigahertz (GHz) frequency range. This extended frequency ...

Textile antenna promises futuristic communications

Sep 28, 2009

(PhysOrg.com) -- With a simple press on his shirt insignia, the captain of the Star Ship Enterprise could send and receive messages. Now, thanks to the efforts of a Finnish company, this futuristic communication ...

Recommended for you

Managing the “Internet of Things

4 hours ago

Researchers in Hong Kong have developed a software platform designed to manage and control devices for "Internet of Things" (IoT) systems. The platform can be tailored for everything from city management ...

Off-road run-ins for driverless fleets

May 28, 2015

Carlos Holguin from the University of Rome, project coordinator with the CITYMOBIL2 project, talks about how the project is demonstrating automated road passenger transport through large and small-scale off-normal traffic ex ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.