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: First drone in Nevada test program crashes in demo

Provided by National Physical Laboratory

4 /5 (2 votes)
add to favorites email to friend print save as pdf

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

First drone in Nevada test program crashes in demo

14 hours ago

A drone testing program in Nevada is off to a bumpy start after the first unmanned aircraft authorized to fly without Federal Aviation Administration supervision crashed during a ceremony in Boulder City.

Fully automated: Thousands of blood samples every hour

22 hours ago

Siemens is supplying automation technology for the longest and one of the most cutting-edge sample processing lines in any clinical laboratory. The line, or automation track, 200 meters long, in Marlborough, ...

Explainer: What is 4-D printing?

22 hours ago

Additive manufacturing – or 3D printing – is 30 years old this year. Today, it's found not just in industry but in households, as the price of 3D printers has fallen below US$1,000. Knowing you can p ...

First series production vehicle with software control

23 hours ago

Siemens has unveiled the first electric series production vehicle with the central electronics and software architecture RACE. This technology, developed in the research project of the same name, replaces ...

Amputee puts limb system through its paces

Dec 19, 2014

"Amputee Makes History with APL's Modular Prosthetic Limb" is the headline from Johns Hopkins Applied Physics Laboratory, where a team working on prosthetics observed a milestone when a double amputee showed ...

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.