Publications de Frédéric Bongard

Tunable radiator for small satellite application

Jean-Daniel Landis, Frédéric Bongard, Pedro Robustillo Bayon, Nevena Saponjic, Tomislav Debogovic, Mikaël Krummen

A tunable radiator for space application has been developed to meet stringent requirements in terms of electrical and environmental specifications but also low mass, simple manufacturing and low cost. The element is based on the folded PIFA antenna, with s ...

2016

Low-profile multi-function antenna system for small satellites

Juan Ramon Mosig, Frédéric Bongard, Pedro Robustillo Bayon, Nevena Saponjic, Tomislav Debogovic, Ferdinando Tiezzi

A low-profile multi-function antenna system suitable for small satellites is presented in this paper. The antenna system operates at UHF frequency band (400 MHz) and comprises eight miniaturised radiating elements (REs) based on a folded planar inverted-F ...

2016

A New Aperture for Switched-Beam Low-Profile Ku-Band Mobile Terminal Array Antennas

Frédéric Bongard, Stefano Vaccaro

This paper presents an innovative switched-beam architecture for a low-cost mobile-terminal antenna, suitable for linear-polarized satellite communications systems. This antenna concept can produce twelve adjacent sector beams that cover the full azimuth f ...

Ieee-Inst Electrical Electronics Engineers Inc2012

Transmission Line Based Metamaterials for Acoustic Waves

Juan Ramon Mosig, Hervé Lissek, Frédéric Bongard

We present our recent work on a one-dimensional acoustic negative refractive index metamaterial based on the concept of dual transmission line extensively investigated in microwave engineering. The proposed structure consists of an acoustic waveguide perio ...

2011

A Microfabricated 1-D Metamaterial Unit Cell Matched From DC to Millimeter-Waves

Mihai Adrian Ionescu, Frédéric Bongard, Julien Perruisseau-Carrier, Montserrat Fernandez-Bolanos Badia

A silicon-integrated one-dimensional CRLH-TL metamaterial unit cell is presented. Ultra broadband behavior is achieved by implementing the previously proposed 'lattice network' CRLH-TL unit cell in a monolayer host transmission line, as required for simple ...

Institution of Engineering and Technology2011

Multi-functional miniaturized slot antenna system for small satellites

Juan Ramon Mosig, Stefano Vaccaro, Frédéric Bongard, Anton Ivanov, Gabriele Rosati

2011

Acoustic transmission line metamaterial with negative/zero/positive refractive index

Juan Ramon Mosig, Hervé Lissek, Frédéric Bongard

A one-dimensional acoustic negative refractive index metamaterial based on the transmission line approach is presented. This structure implements the dual transmission line concept extensively investigated in microwave engineering. It consists of an acoust ...

2010

Contributions to the modeling and design of reconfigurable reflecting cells embedding discrete control elements

Juan Ramon Mosig, Frédéric Bongard, Julien Perruisseau-Carrier, Roberto Torres Sánchez, Ruzica Golubovic

This paper presents new contributions to the modeling and design of reflecting cells embedding discrete control elements such as microelectromechanical system (MEMS) or diodes. First, a rigorous assessment of the different possibilities to simulate and mea ...

Institute of Electrical and Electronics Engineers2010

Métamatériau Mécano-Acoustique basé sur le Concept de Ligne de Transmission Duale

Hervé Lissek, Frédéric Bongard

Les métamatériaux acoustiques sont des structures artificielles conçues pour réaliser des propriétés macroscopiques inédites dans la nature, telles qu’un indice de réfraction négatif. Parmi les différentes configurations permettant d’obtenir de telles prop ...

2010

Contribution to characterization techniques for practical metamaterials and microwave applications

Frédéric Bongard

Metamaterials (MTMs) are broadly defined as artificial composite materials specifically engineered to produce desired unusual electromagnetic properties not readily available in nature. The most interesting unusual property achievable with MTMs is probably ...

EPFL2009