Publications associées à An efficient technique to accelerate the simulation of passive shielded microwave circuits

4-Port Microstrip planar resonator for multiband microwave material characterization applications

Planar microstrip resonators suitable for material characterization application are presented in this paper. The prototype consists of three resonators fed through four ports in a planar dielectric substrate without any additional resonators. The resonator ...

IEEE2022

Nonreciprocity in Uniform Time-Varying Materials Using Spatial Dispersion

Xiaoqiang Wang, Mohammad Sajjad Mirmoosa, Xiao Wang

Conventionally, nonreciprocity in time-varying systems is achieved by exploiting both temporal and spatial modulations. In this paper, we introduce a concept of magnetless bianisotropic time-modulated systems that support nonreciprocal wave propagation at ...

IEEE2020

Two-Element Antenna-Active Phase Shifter Packaging at 77 GHz

Anja Skrivervik, Efe Öztürk

This work presents a low cost and wire-bonded active phase shifter chip to RF circuitry on PCB board packaging for implementing a two-element phased array antenna at 77 GHz. The 1.5 mm × 1.1 mm chip is embedded in RO3003 PCB board and its GSG ports are wir ...

IEEE2019

Electronics Emulation for Real-Time Fault Location in Power Systems

François Pierre Gaugaz

This research presents a high-speed hardware platform dedicated to emulate electrical power networks for the fault location. The solution implements an algorithm based on the Electromagnetic Time-Reversal (EMTR) principle, which allows locating faults in v ...

EPFL2017

Design of Compact Air-Vias-Perforated SIW Horn Antenna With Partially Detached Broad Walls

Lei Wang

A novel substrate-integrated waveguide (SIW) horn antenna with partially detached broad walls is designed and analyzed. The conventional SIW horn antenna suffers from narrow-operating bandwidth, which mainly results from the mismatch at the horn aperture b ...

Ieee-Inst Electrical Electronics Engineers Inc2016

Horn Antennas and Dual-Polarized Circuits in Substrate Integrated Waveguide (SIW) Technology

Marc Esquius Morote

The Substrate Integrated Waveguide (SIW) technology is a very promising candidate to provide widespread commercial solutions for modern communications systems. Its main advantage is the possibility to integrate passive/active components and antennas in the ...

EPFL2014

Orthomode transducer for dual polarized substrate integrated circuits and antennas

Juan Ramon Mosig, Michael Mattes, Marc Esquius Morote

A complete dual polarized substrate integrated structure is presented. It comprises planar excitation schemes for both orthogonal TE10 and TE01 modes along with an orthomode transducer (OMT) to combine/split them. The whole structure is compact (only 2 lay ...

2014

Electromagnetic Modelling of Planar Circuits Embedded in Laterally Shielded Multilayered Media

Laleh Golestanirad

Multilayered media with printed circuits embedded between their dielectric layers are one of the most successful technologies for manufacturing planar structures with a very promising performance-to-price ratio. These planar structures include many differe ...

EPFL2011

Circularly polarized aperture coupled stacked patch antenna element for Ka-band

Juan Ramon Mosig, Jean-François Zürcher, Rafal Glogowski

This paper presents the design and implementation of a circularly polarized stacked patch antenna element for Ka-band applications. The printed element has been developed to be used in a LEO satellite antenna array. Two circular stacked patches, with air g ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2011

Introducing symmetry conditions in the integral equation technique applied to quasi-waveguide structures

Juan Ramon Mosig, Michael Mattes, Laleh Golestanirad

Integral Equation (IE) formulation solved by Method of Moments may be used efficiently to address the problem of quasi-waveguide structures, i.e. structures consisting of a main waveguide with a constant cross section that may bear an arbitrary number of p ...

2009

Rigorous Investigation of RF Breakdown Effects in High Power Microstrip Passive Circuits

Juan Ramon Mosig, Michael Mattes

This work presents a new rigorous investigation of corona effects in microstrip components. To carry out the investigation, a new software tool has been developed. The new tool first calculates the electromagnetic fields in complex microstrip structures us ...

2009

High Power SMA Connectors

Michael Mattes, Francisco Edén Sorolla Rosario

On board of satellites traditionally Travelling Wave Tube Amplifiers (TWTAs) together with standard waveguide technology were used for transmitters in telecommunication payload systems. With the advent of Solid State Power Amplifiers (SSPAs) printed circui ...

2008

3D analysis and optimization of microwave circuits by the method of moments

Francisco Jesus Nunez

The design and minaturization of microwave circuits involves the analysis and optimization of a large varity of structures, which, in general, are based on arbritrary objects embedded in also arbritary media. The most common situation is found when optimiz ...

EPFL2006