Dual-band circulators under weak bias fields
An analytical method for designing ferrite circulators operating in two bands simultaneously, carried over to microstrip technology.
Read the article →Research & innovation
Research, the driving force behind our microwave work.
A joint laboratory with CNRS and XLIM, publications in leading journals, patents: at INOVEOS, innovation is built with top research labs and then finds its way into our components.
20+IEEE publications
CEApatent co-filed in electromagnetic detection
2016joint laboratory with CNRS and XLIM founded
INOGYRO, our joint laboratory
INOGYRO is a joint laboratory founded in 2016 and co-directed by INOVEOS and XLIM, the research institute of CNRS and the University of Limoges. It carries our work on gyromagnetic materials and components: circulators, isolators and ferrite devices, at the heart of many RF front-ends.
This partnership brings academic research and industry together around one goal: going from a concept validated in the lab to a manufactured, qualified component. Work on dual-band circulators operating under weak bias fields, for instance, led to a new design method published in the IEEE Transactions on Microwave Theory and Techniques.
Since its creation, the laboratory has kept the same course: ferrite devices and non-reciprocal components.
XLIM shares joint laboratories with CEA, Thales, Safran… and INOVEOS.
Collaborative projects
We run projects with research labs, technical centers and industrial partners, from idea to demonstrator.
Microwave filter tuning robot
Robotics and machine learning to tune RF filters automatically from measurements of their S-parameters.
Read the article →The first dual-band microstrip circulator
A planar ferrite circulator operating simultaneously at 5 and 10 GHz, with more than 20 dB of isolation, far more compact than stripline versions. The prototype was structured on our LPKF ProtoLaser U4.
View the publication →From simulation to measurement
Industrial resources serving research
3D electromagnetic and circuit simulation (CST, ADS), mechanical design (SolidWorks), rapid prototyping of our own circuits on LPKF systems, characterization in our microwave lab and, for the most demanding measurements, on XLIM’s PLATINOM platform.
Patents
Co-filed with CEA, our patent protects a method for detecting and measuring electromagnetic disturbances, at the heart of our detector range.
“Detection and measurement unit for detecting electromagnetic disturbances, detection system comprising such an analysis unit, and analysis method” (translated title)Co-owners: CEA and INOVEOS · priority date February 19, 2021France: FR 3 120 128, granted November 29, 2024 · Europe: EP 4 047 379, granted January 8, 2025 · extensions in Spain and the United States
Discover the DAEM →Selected publications
- V. Olivier, T. Monédière and L. Huitema, “New Concept of Dual-Band Microstrip Ferrite Circulator Based On Wideband Configuration,” European Microwave Week (EuMW), London, October 2026.
- V. Olivier, V. Laur, N. Parker, L. Roussel and R. Lebourgeois, “Design and Measurement of a 16 GHz SMD Self-Biased Ferrite Circulator,” European Microwave Week (EuMW), London, October 2026.
- M. Schutz, J.-D. Bertaux and L. Bacqué, “Accurate Measurement and Control System for RF Broadband Power Amplifier,” IEEE Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMC+SIPI), p. 592-595, 2023. doi: 10.1109/EMCSIPI50001.2023.10241584 ↗
- V. Olivier, T. Monédière, B. Lenoir, H. Turki and L. Huitema, “Dual-band Microstrip Ferrite Circulator,” IEEE/MTT-S International Microwave Symposium (IMS), p. 1013-1016, 2023. doi: 10.1109/IMS37964.2023.10188126 ↗
- V. Olivier, T. Monédière, B. Lenoir, H. Turki, C. Breuil, P. Pouliguen and L. Huitema, “General Coupling Method for Stripline Ferrite Circulators: Application on Dual-Band Devices With Complex Central Conductor Shape,” IEEE Transactions on Microwave Theory and Techniques, vol. 70, no. 7, pp. 3486–3497, July 2022. doi: 10.1109/TMTT.2022.3175168 ↗
- V. Olivier, T. Monédière, B. Lenoir, H. Turki and L. Huitema, “New numerical method for eigenmodes computation in ferrite stripline cavities with complex central conductor shape,” IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO), 2022. doi: 10.1109/NEMO51452.2022.10038954 ↗
- V. Olivier, L. Huitema, B. Lenoir, H. Turki, C. Breuil, P. Pouliguen and T. Monédière, “Stripline dual-band ferrite circulators operating on weak field conditions,” 50th European Microwave Conference (EuMC), Utrecht, pp. 860–863, January 2021.
- M. Schutz, C. Decroze, M. Lalande and B. Lenoir, “Reconfigurable, Low-Cost Monostatic Ultra-Wide Band Radar,” IEEE Radar Conference (RadarConf20), 2020. IEEE Xplore ↗
- V. Olivier et al., “Dual-Band Ferrite Circulators Operating on Weak Field Conditions: Design Methodology and Bandwidths’ Improvement,” IEEE Transactions on Microwave Theory and Techniques, vol. 68, no. 7, pp. 2521–2530, July 2020. doi: 10.1109/TMTT.2020.2988003 ↗
- H. Turki, L. Huitema, T. Monédière, B. Lenoir and C. Breuil, “New Concept Validation of Low-Loss Dual-Band Stripline Circulator,” IEEE Transactions on Microwave Theory and Techniques, vol. 67, no. 3, pp. 845–850, March 2019. doi: 10.1109/TMTT.2018.2890632 ↗
