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 Controlling robots with brainwaves and hand gestures
20.06.2018 | Massachusetts Institute of Technology, CSAIL

nachricht Innovative autonomous system for identifying schools of fish
20.06.2018 | IMDEA Networks Institute

All articles from Information Technology >>>

The most recent press releases about innovation >>>

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

Im Focus: Temperature-controlled fiber-optic light source with liquid core

In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.

Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...

Im Focus: Overdosing on Calcium

Nano crystals impact stem cell fate during bone formation

Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...

Im Focus: AchemAsia 2019 will take place in Shanghai

Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.

Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...

Im Focus: First real-time test of Li-Fi utilization for the industrial Internet of Things

The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.

Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.

Im Focus: Sharp images with flexible fibers

An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.

Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Munich conference on asteroid detection, tracking and defense

13.06.2018 | Event News

2nd International Baltic Earth Conference in Denmark: “The Baltic Sea region in Transition”

08.06.2018 | Event News

ISEKI_Food 2018: Conference with Holistic View of Food Production

05.06.2018 | Event News

 
Latest News

New cellular pathway helps explain how inflammation leads to artery disease

22.06.2018 | Life Sciences

When fluid flows almost as fast as light -- with quantum rotation

22.06.2018 | Physics and Astronomy

Exposure to fracking chemicals and wastewater spurs fat cell development

22.06.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>