Publications by Emile Jacques de Rijk

Study of additive manufactured microwave cavities for pulsed optically pumped atomic clock applications

Additive manufacturing (AM) of passive microwave components is of high interest for the cost-effective and rapid prototyping or manufacture of devices with complex geometries. Here, we present an experimental study on the properties of recently demonstrate ...

AIP American Institute of Physics2018

Compact Orthomode Transducer with Broadband Beamforming Capability

Juan Ramon Mosig, Anja Skrivervik, Emile Jacques de Rijk

A compact and broadband orthomode transducer (OMT) with two dual linearly polarized ports is reported here for the first time. The component is based on a combination of two ridged Boifot junctions through a series of power dividers that act as an embedded ...

IEEE2018

3D printed microwave cavity for atomic clock applications: proof of concept

Anja Skrivervik, Emile Jacques de Rijk

The authors present the realisation and characterisation of an additively manufactured (AM) microwave resonator cavity for double-resonance (DR) vapour-cell atomic clocks. The design of the compact microwave cavity is based on the loop-gap resonator approa ...

2018

Atomic clock microwave cavity: 3D Printing microwave resonator cavities for atomic clocks

Anja Skrivervik, Emile Jacques de Rijk

2018

High-Field Liquid-State Dynamic Nuclear Polarization in Microliter Samples

Stefano Alberti, Jean-Philippe Ansermet, Emile Jacques de Rijk, Jérémy Genoud

2018

Four-Port Broadband Orthomode Transducer Enabling Arbitrary Interelement Spacing

Juan Ramon Mosig, Anja Skrivervik, Emile Jacques de Rijk, Tomislav Debogovic, Maria Garcia Vigueras, Santiago Capdevila Cascante, Esteban Menargues Gomez

This paper reports a novel methodology to design broadband orthomode transducers with two arbitrarily spaced ports carrying orthogonal linear polarizations. The component is based on a combination of two Boifot junctions through a series of power dividers ...

Institute of Electrical and Electronics Engineers2018

Polymer-Based Metal Coated Additive Manufactured V- and W-band Antenna Feed Chain Components

Juan Ramon Mosig, Emile Jacques de Rijk, Tomislav Debogovic, Santiago Capdevila Cascante, Esteban Menargues Gomez

In this paper an additive manufactured (AM) W-band monolithic feed chain is presented. The feed chain, which consists of a corrugated horn antenna and a turnstile orthomode transducer (OMT), operates over the entire W-band (75-110 GHz) and fulfills typical ...

IEEE2017

Cost-effective dual-polarised leaky-wave antennas enabled by three-dimensional printing

Juan Ramon Mosig, Emile Jacques de Rijk, Tomislav Debogovic, Maria Garcia Vigueras, Esteban Menargues Gomez

This study proposes a compact dual-polarised directive radiator whose complex prototyping is enabled by additive manufacturing. In addition to monolithic implementation, stereolitography followed by metal coating, it also provides high radio-frequency perf ...

Inst Engineering Technology-Iet2017

Polymer-Based Additive Manufacturing of High-Performance Waveguide and Antenna Components

Jean-Philippe Ansermet, Emile Jacques de Rijk, Mathieu Billod, Tomislav Debogovic

In this paper, a lightweight horn antenna array demonstrator is designed and fabricated by means of an additive manufacturing (AM) process that has been optimized for complicated passive radio-frequency (RF) components. The presented design comprises a com ...

Ieee-Inst Electrical Electronics Engineers Inc2017

W-Band Waveguide Filters Fabricated by Laser Micromachining and 3-D Printing

Emile Jacques de Rijk, Mathieu Billod, Cheng Guo

This paper presents two W-band waveguide bandpass filters, one fabricated using laser micromachining and the other 3-D printing. Both filters are based on coupled resonators and are designed to have a Chebyshev response. The first filter is for laser micro ...

Institute of Electrical and Electronics Engineers2016

Sub-terahertz spectroscopy of magnetic resonance in BiFeO3 using a vector network analyzer

Jean-Philippe Ansermet, Arnaud Magrez, Emile Jacques de Rijk, Christian Caspers, Varun Paresh Gandhi

Detection of sub-THz spin cycloid resonances (SCRs) of stoichiometric BiFeO3 (BFO) was demonstrated using a vector network analyzer. Continuous wave absorption spectroscopy is possible, thanks to heterodyning and electronic sweep control using frequency ex ...

Amer Inst Physics2016

Rectangular waveguides for applications using terahertz signals

Emile Jacques de Rijk, Mathieu Billod, Alessandro Macor

A waveguide for transmitting signals at terahertz (THz) frequencies, wherein said waveguide comprises at least a matrix and an insert piece having a waveguide channel, wherein said piece is inserted in said matrix. ...

2014

Terahertz passive components for Dynamic Nuclear Polarization Nuclear Magnetic Resonance applications

Emile Jacques de Rijk

Terahertz radiation, THz = 1012 Hz, refers to electromagnetic signals with frequencies in the range of 0.3 to 3 THz, and wavelengths between 1 and 0.1 mm. This part of the electromagnetic spectrum is located in between millimeter waves at lower frequencies ...

EPFL2013

Over-moded resonant cavity for magnetic resonance based on a photonic band gap stucture

Emile Jacques de Rijk, Alessandro Macor

The present invention relates to a probe for multiple irradiation magnetic resonance techniques like, for instance, dynamic nuclear polarization (DNP) or ENDOR. The probe comprises an overmoded resonant cavity based on a Photonic Band Gap (PBG) structure f ...

2013

Passive components for millimeter, submillimeter and terahertz electromagnetic waves made by piling up successive layers of material

Jean-Philippe Ansermet, Emile Jacques de Rijk, Alessandro Macor

The passive component for the transmission and manipulation of electromagnetic signals having frequencies from 30 GHz to 100 THz, comprises a corrugated or smooth wall unit alone or an assembly of at least one corrugated or smooth wall unit in a hollow gui ...

2012

Experimental results on a modular-gyrotron operating at 0.26THz for 400MHz DNP/NMR spectroscopy application

Stefano Alberti, Jean-Philippe Ansermet, Philippe Cuanillon, Damien Fasel, Minh Quang Tran, Trach-Minh Tran, Jean-Philippe Hogge, Jérémie Dubray, Emile Jacques de Rijk, Alessandro Macor, Falk Hans Braunmüller

2012

Note: Stacked rings for terahertz wave-guiding

Stefano Alberti, Jean-Philippe Ansermet, Jean-Philippe Hogge, Emile Jacques de Rijk, Alessandro Macor

We demonstrate the construction of corrugated waveguides using stacked rings to propagate terahertz frequencies. The waveguide allows propagation of the same fundamental mode as an optical-fiber, namely, the HE11 mode. This simple concept opens the way for ...

American Institute of Physics2011

Stacked rings for terahertz wave-guiding

Stefano Alberti, Jean-Philippe Ansermet, Jean-Philippe Hogge, Emile Jacques de Rijk, Alessandro Macor

We demonstrate the construction of corrugated waveguides using stacked rings to propagate terahertz frequencies. The waveguide allows propagation of the same fundamental mode as an optical-fiber, namely, the H E11 mode. This simple concept opens the way fo ...

American Institute of Physics2011

THz-waves channeling in a monolithic saddle-coil for Dynamic Nuclear Polarization enhanced NMR

Stefano Alberti, Jean-Philippe Ansermet, Emile Jacques de Rijk, Alessandro Macor

A saddle coil manufactured by electric discharge machining (EDM) from a solid piece of copper has recently been realized at EPFL for Dynamic Nuclear Polarization enhanced Nuclear Magnetic Resonance experiments (DNP-NMR) at 9.4 T. The corresponding electrom ...

Academic Press Inc - Elsevier Science2011