Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Cheaper mobile phones or GPS and with enhanced performance

29.11.2005


In his PhD thesis the Pamplona engineer, Francisco Falcone Lanas, has put forward various structures based on what are known as left-handed metamaterials, materials that can be used to make smaller mobile phones, aerials or GPS and which have better specifications and performance. This is the first PhD defended in the world on applications of left-handed metamaterials.



Photonic crystal devices

The research undertaken by Francisco Falcone in his PhD involved analysing the application of metamaterial structures in conventional high-frequency planar technology.


For his thesis Francisco Falcone analysed two types of structure. One with photonic crystals which have good control of the signal but are not greatly efficient with respect to size. These are known as Electromagnetic Bandgap (EBG) structures. Taking these as a basis, Francisco Falcone put forward a number of microstrip technology devices, etching a periodic pattern on their planar surfaces. This is the most significant difference in these proposed, smaller and more compact unidimensional structures, compared to the previous, bidimensional ones. Moreover, they have experimented with the introduction of a resonator in planar technology.

First worldwide

It is, nevertheless, it is with the second type of structure where the results of the research team at the Public University of Navarre are more spectacular. What are known as left-handed metamaterials involve materials which have curious electromagnetic properties and which are not found naturally, i.e. they are artificially generated media.

In this part of the research Francisco Falcone synthesised left-handed materials in planar technology by using Split Ring Resonators (SRR) together with a medium of fine metallic wires. In this respect we can say that we have achieved the very first implementation worldwide of a low loss LHM metamaterial. An evolution of this device was the use of a new particle therein - which we call complementary SSR - in which the role of paper and metal is interchanged.

In this way and applying classical metamaterial concepts, we obtained devices with extremely low losses. Our proposal was based on the introduction of particles in planar technology, i.e. their integration into the circuit. In fact, we have managed to obtain the devices with the lowest losses ever obtained worldwide. We were the first to propose this phenomenon and the discovery received recognition on being published in the prestigious scientific magazine, Physical Review Letters.

The advantage of its use is that it enables the making of a series of circuits that otherwise would be impossible and, moreover, these give quite an optimal response in that they have few and very low losses.

This PhD puts forward the potential use of these kinds of structures for devices such as filters, couplings and aerials for 2nd, 3rd and 4th generations mobile communications systems such as satellite systems and WLAN. But, above all, they are low cost structures and very easy to manufacture.

Garazi Andonegi | alfa
Further information:
http://www.basqueresearch.com

More articles from Information Technology:

nachricht Safe glide at total engine failure with ELA-inside
27.02.2017 | FernUniversität in Hagen

nachricht Deep Learning predicts hematopoietic stem cell development
21.02.2017 | Helmholtz Zentrum München - Deutsches Forschungszentrum für Gesundheit und Umwelt

All articles from Information Technology >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Safe glide at total engine failure with ELA-inside

On January 15, 2009, Chesley B. Sullenberger was celebrated world-wide: after the two engines had failed due to bird strike, he and his flight crew succeeded after a glide flight with an Airbus A320 in ditching on the Hudson River. All 155 people on board were saved.

On January 15, 2009, Chesley B. Sullenberger was celebrated world-wide: after the two engines had failed due to bird strike, he and his flight crew succeeded...

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

New pop-up strategy inspired by cuts, not folds

27.02.2017 | Materials Sciences

Sandia uses confined nanoparticles to improve hydrogen storage materials performance

27.02.2017 | Interdisciplinary Research

Decoding the genome's cryptic language

27.02.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>