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Antonio Marcotegui J.,Tafco Metawireless | Illescas J.M.,Tafco Metawireless | Estevez A.,Tafco Metawireless | Falcone F.,Public University of Navarra
The Scientific World Journal | Year: 2013

A new class of broadband microstrip filters for Ultra Wide Band (UWB) applications is proposed. In the design, different stages of parallel-coupled microstrip line and other stages with a Modified Complementary Split Ring Resonator (MCSRR) - a concept proposed here for the first time - are adjusted to obtain the desired response with broadband, sharp rejection, low insertion loss, and low return loss. Full wave simulation results as well as measurement results from fabricated prototypes are presented, showing good agreement. The proposed technique offers a new alternative to implement low-cost high-performance filter devices, applicable to a wide range of communication systems. © 2013 J. Antonio Marcotegui et al. Source


A new class of broadband microstrip filters for Ultra Wide Band (UWB) applications is proposed. In the design, different stages of parallel-coupled microstrip line and other stages with a Modified Complementary Split Ring Resonator (MCSRR)-a concept proposed here for the first time-are adjusted to obtain the desired response with broadband, sharp rejection, low insertion loss, and low return loss. Full wave simulation results as well as measurement results from fabricated prototypes are presented, showing good agreement. The proposed technique offers a new alternative to implement low-cost high-performance filter devices, applicable to a wide range of communication systems. Source


Jarauta E.,Public University of Navarra | Falcone F.,Public University of Navarra | Beruete M.,Public University of Navarra | Illescas J.,Tafco Metawireless
Progress in Electromagnetics Research Letters | Year: 2011

On the basis of backward coupling and left-handed microstrip line, new designs of duplexers and multiplexers will be presented and tested in different configurations. By using microstrip lines with Complementary Split Ring Resonators (CSRRs) etched on the ground plane along with series capacitive gaps in the upper conductor, forward coupling will be inverted into backward coupling. Compact size and fully planar fabrication techniques are important characteristics in the devices proposed. Source


Torres V.,Public University of Navarra | Azpilicueta L.,Public University of Navarra | Estevez A.,Tafco Metawireless | Beruete M.,Public University of Navarra | Falcone F.,Public University of Navarra
2011 IEEE MTT-S International Microwave Workshop Series on Millimeter Wave Integration Technologies, IMWS 2011 | Year: 2011

In this work, an analysis of the influence of topology and morphology to the physical radio channel operating at millimeter wave bands in indoor scenarios is presented. A deterministic method, based on 3D ray launching has been implemented and tested with sources transmitting at 80 GHz and 100 GHz. The results show the strong dependence of the indoor scenario in the performance of the system, revealing that the consideration of the topology of the wireless system prior to deployment leads to an optimal final configuration. © 2011 IEEE. Source


Crepin T.,ONERA | Martel C.,ONERA | Gabard B.,ONERA | Boust F.,ONERA | And 8 more authors.
2014 International Radar Conference, Radar 2014 | Year: 2014

In this work, a metaradome based on a fakir's bed of nails is designed and tested in order to suppress the blind directions of a 100-element antenna array. The antenna is a microstrip array designed to operate in X-band. The fakir's bed metamaterial-like was first approximated using analytical formulas before a full-wave numerical optimization. Experimental results are exposed and confronted to numerical results. They show a significant reduction of the blind spot subsequent to the metaradome addition. © 2014 IEEE. Source

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