Combining several antenna elements into a single antenna speeds up data transfer and improves reception and efficiency
Aalto University's Radio Science and Engineering researchers have developed a method that allows antennas to make the shift from the analogue to the digital world. The antennas currently in use are mostly based on technology developed half a century ago.
The phone's antennas are placed in the top and bottom, which means that the phone's touch screen does not cover the entire phone. With the help of new developed method the antennas need less space and the phone display can be made larger and the phone design can be more free.
Credit: Aalto University
'Traditionally one antenna works with either one or a few different frequencies. Now we can take advantage of advanced digital electronics and combine several small antenna elements to work together as one antenna that can be made to operate digitally with any frequency.
In this way, many smartphone applications like GPS, Bluetooth and Wi-Fi will no longer need their own antennas. Instead, all of the phone's data transfer can take place through one digitally controlled antenna. This in turn makes phone design easier and enables a larger screen size relative to phone size as the antenna does not require so much space', explains doctoral candidate Jari-Matti Hannula.
The new antenna also makes it possible to reach the data transfer speed set as the objective for the next generation of phones, which is 100 to 1000 times faster than that of current phones. In addition, battery life will be improved owing to the greater efficiency of the new method.
Antenna control requires new technology
Thanks to the new method, the antenna can have even greater bandwidth, which leads to a higher data transfer speed and improved efficiency. These new antennas may also dispose of the analogue components that traditional antennas use to tune into the desired frequency. This facilitates antenna design and enables the creation of more compact antennas with better radiation efficiency.
With antennas designed using the standard technology, it is possible to obtain either a broad frequency range or high efficiency, but not both at the same time. Antennas' radiation efficiency has in recent times been falling because the frequency range used by mobile phones has been continuously increasing. Poor radiation efficiency leads to a short transmission range, for which network operators are then forced to compensate with a denser network of base stations. Energy is wasted in both the phone and the base station. In addition, increasing the network density is expensive.
Professor of Radio Engineering Ville Viikari believes that the new method will revolutionise the fifth generation of mobile phones and maintain Finland as one of the leading countries in the development of mobile phone antennas. For example, the antenna type developed by the Department of Radio Science and Engineering at the beginning of the 21st century is the main type in use in current phones. Now is the time to forge the solutions for a new generation of mobile devices.
'The next step in the development process is under way with the commencement of tests in cooperation with Huawei using fifth generation mobile phone devices. We are also developing together with Aalto University researchers digital electronic systems for controlling the antennas', Mr Viikari adds.
An article detailing the principles of the method has been published in journal IEEE Antennas and Wireless Propagation Letters. Link to the article http://dx.
Ville Viikari | EurekAlert!
Fraunhofer FIT announces CloudTeams collaborative software development platform – join it for free
10.01.2017 | Fraunhofer-Institut für Angewandte Informationstechnik FIT
Electron-photon small-talk could have big impact on quantum computing
23.12.2016 | Princeton University
At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).
Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...
Many pathogens use certain sugar compounds from their host to help conceal themselves against the immune system. Scientists at the University of Bonn have now, in cooperation with researchers at the University of York in the United Kingdom, analyzed the dynamics of a bacterial molecule that is involved in this process. They demonstrate that the protein grabs onto the sugar molecule with a Pac Man-like chewing motion and holds it until it can be used. Their results could help design therapeutics that could make the protein poorer at grabbing and holding and hence compromise the pathogen in the host. The study has now been published in “Biophysical Journal”.
The cells of the mouth, nose and intestinal mucosa produce large quantities of a chemical called sialic acid. Many bacteria possess a special transport system...
UMD, NOAA collaboration demonstrates suitability of in-orbit datasets for weather satellite calibration
"Traffic and weather, together on the hour!" blasts your local radio station, while your smartphone knows the weather halfway across the world. A network of...
Fiber-reinforced plastics (FRP) are frequently used in the aeronautic and automobile industry. However, the repair of workpieces made of these composite materials is often less profitable than exchanging the part. In order to increase the lifetime of FRP parts and to make them more eco-efficient, the Laser Zentrum Hannover e.V. (LZH) and the Apodius GmbH want to combine a new measuring device for fiber layer orientation with an innovative laser-based repair process.
Defects in FRP pieces may be production or operation-related. Whether or not repair is cost-effective depends on the geometry of the defective area, the tools...
On Monday, Aug. 21, 2017, millions in the U.S. will have their eyes to the sky as they witness a total solar eclipse. The moon's shadow will race across the United States, from Oregon to South Carolina. The path of this shadow, also known as the path of totality, is where observers will see the moon completely cover the sun. And thanks to elevation data of the moon from NASA's Lunar Reconnaissance Orbiter, or LRO, coupled with detailed NASA topography data of Earth, we have the most accurate maps of the path of totality for any eclipse to date.
On Monday, Aug. 21, 2017, millions in the U.S. will have their eyes to the sky as they witness a total solar eclipse. The moon's shadow will race across the...
10.01.2017 | Event News
09.01.2017 | Event News
05.01.2017 | Event News
13.01.2017 | Life Sciences
13.01.2017 | Earth Sciences
13.01.2017 | Earth Sciences