17th International Conference on Microwave and HF Heating: AMPERE 2019


DIMAS group is very pleased to announce that the 17th International Conference on Microwave and High Frequency Heating: AMPERE 2019 will be held on the 9th-12th September 2019 in the Universitat Politècnica de València. This conference is the largest event in Europe dedicated to scientific and industrial applications of microwave and radiofrequency power systems.

The AMPERE conference is a unique opportunity for the presentation and discussion of the most recent advances in the microwave technology and its applications. The conference provides many opportunities to researchers and engineers from academia and industry to exchange innovative ideas, networking, discuss collaborations and to meet with international experts in a wide variety of specialities of microwave and high frequency technologies at both scientific and industrial scale.

A broad range of microwave and radio frequency related topics, from materials and technologies to high power systems and applications will be addressed in all their aspects: theory, simulation, design, measurement and applications. You can find the first call for abstracts here.

Workshops, Short Courses and Special Sessions will be organized focusing on the main topics of the Conference. AMPERE 2019 also offers an outstanding exhibition opportunity, visit the conference webpage for further information.


DIMAS participates in a new european project: DESTINY


The microwave division of ITACA participates in the new European project DESTINY: Development of an Efficient Microwave System for Material Transformation in energy INtensive processes for an improved Yield (H2020-NMBP-SPIRE-2018).

With 14 partners covering 9 European countries, DESTINY pursues the introduction of the “first-of-a-kind” high temperature microwave processing system at industrial level, offering a variety of vital benefits to energy intensive sectors (ceramic pigments, steel and clay sectors): reduced energy consumption, lower lifetime operating costs and enhanced sustainability profile. DESTINY will give these sectors the chance to replace their standard heating technologies averagely cutting by 30% the required energy for production and decreasing the CO2 emissions.

DIMAS activities within the project aim to realize a functional, green and energy saving, scalable and replicable solution, employing microwave technology for continuous material processing in the considered energy intensive industries.

The DESTINY Kickoff meeting was held in Brussels (30th-31st of October 2018), being a great opportunity for the partners to get the key information needed to succeed and to demonstrate their enthusiasm and understanding of the new project.




The Microwave Division of ITACA has participated in the 38th annual symposium of the IEEE Geoscience and Remote Sensing Society (GRSS) [IGARSSS 2018] held in Valencia from July 22nd to 27th, 2018.

Dimas has published a paper in collaboration with ARAMCO SERVICES COMPANY in Houston (Texas-USA) that shows the permittivity of Shale at different frequencies from 1 GHz to 3.5 GHz with a Dimas equipement based on a resonant TM0np cavity and measurements performed at different harmonics.

The method has been validated with Rexolite values with an excellent match.

DIMAS at the EuMW Conference 2018


The Microwave Division of ITACA will participate as exhibitor in European Microwave Week 2018 Conference that will be held in Madrid, Spain from the 23rd to the 28th of September.

Bringing industry and academia together, EuMW 2018 is a SIX day event, including three cutting edge conferences and one technology exhibition. EuMW 2018 provides access to the very latest products, research and initiatives in the microwave sector. It also offers the opportunity for face to face interaction with those driving the future of microwave technology.

In our booth (No. 14), people will be able to see:

  • Innovative microwave equipment for processing and synthesis of high-tech materials with unique properties.
  • Advanced technology for testing and characterization of electromagnetic properties of materials from room to high temperatures (>1000ºC).
  • Equipment for in situ combination of different techniques (i.e. simultaneous dielectric and Raman spectroscopy) during microwave processing, allowing a fine-tuning control and a deeper understanding of microwave-matter interaction.
  • Our expertise in electromagnetic modeling and design of microwave equipment for emerging challenges and novel applications.

Some recent results about electromagnetic characterization obtained with our technology will be presented in the conference as well:

  • David Marques-Villarroya et al., “Extended Full-Wave Analysis of a Multimode Circular Cavity with Insertion Hole”

STEP project: Microwave Technology for Stone Eco-Efficient Production


The production chain in natural stone factories involves a drying stage in natural gas kilns, followed by the application of reinforcement resins to seal cracks or fractures, and finally a curing stage to harden the resins in natural gas furnaces.

These are the 2 eco-innovations achieved thanks to the STEP Project:

  • The industrial scale validation of a new microwave on-line processing system for rapid and continuous curing resin reinforcement of flat semi finished natural stone products, replacing conventional thermal systems based on natural gas and electric support elements.
  • Validation of water-based eco-resins based on nano-composites with zero emission of volatile organic compounds.

DIMAS participated in the project with the development of the new on-line open system for continuous marble drying and resin curing process with microwave energy.


Logo_EC_ECO_InnovationThe implementation of this development results in significant benefits for the natural stone sector in terms of efficiency, productivity and utilization of raw materials, as well as in health and safety aspects for employees of the production lines.

Paper at the European Microwave Week

Dimas group participated in the European Microwave Week that was held in Nuremberg in October 2017, with the paper entitled “Analysis of an Overmoded Re-Entrant Cavity“. It was authored by David Marques-Villarroya, Felipe Penaranda-Foix, Beatriz Garcia-Banos, Jose Manuel Catala-Civera, Jose Daniel Gutierrez-Cano.

The paper deals with the well knows reentrant cavity, but taking into account the complete set of modes and presenting a chart to fully charaterize the cavity. It is based on the Circuit Analisys Method, being developed in the Microwave Division of ITACA Research Institute since some years ago.

The paper was selected for a short video presentation that can be found here and also in this YouTube link:

CALCERAM Project: innovative system for efficient calcination of silicates

CalceramThe CALCERAM project aims to develop an eco-efficient system based on microwave heating technology for the continuous calcination of silicates (clays and kaolins). Clays and kaolins are raw materials for the ceramic and cement sectors respectively and both are of great importance for the productive economy of the Valencian Community.

The calcination process or thermal activation of clays and kaolins involves heating the raw materials up to temperatures that can range between 650°C and 1200°C.

The solution developed in the project aims to improve the environmental impact of the ceramics and cement industry by introducing microwave technology to eliminate the use of fossil fuels, reducing global CO2 emissions. At the same time, it allows decreasing processing times with a robust and compact solution that considerably reduces the space requirements in the production plants.

INNCEINNMAT is the company in charge of the project within the line of the I+D Pyme program of IVACE (nº exp. IMIDTA / 2016/168). DIMAS-ITACA participates in the project with the dielectric characterization of the materials, as well as with the design of the microwave applicator to perform the continuous calcination of the silicates in the specific conditions required.


bandera-espanya Spanish Version

NANOFOR Project: Microwave reactors for advanced synthesis of nanoparticles

The NANOFOR nanoparticula_webproject aims to obtain colorless nano-fluorophors with high optical response by excitation and up-conversion at pre-designed wavelengths. To this end, the synthesis will be developed by new microwave reactors in continuous, also including the systems of identification and recognition for the control of the process.

From the scientific point of view, it brings a new advance in the synthesis processes to obtain nanocrystals with special optical properties. Technologically it involves increasing the production capacity to levels well above the state of the art, as well as improving the optical properties obtained with the existing processes.

The consortium consists of CEINNMAT as a developer of the procedures, the ICMol-UV that brings its knowledge in design and synthesis of nanocrystals, and DIMAS-UPV group for the design of microwave reactors. The partners will address the major challenges proposed through collaboration between nanoscience, materials science, new technology developments and results marketing.

ThLogo_conjunto_MINECO_FEDER_2is project RTC-2016-5114-5 has been financially supported by Ministerio de Economía y Competitividad (MINECO) -Spanish Government- and  by European Regional Development Funds (ERDF) of European Union.

bandera-espanya  Spanish version

New paper published at IEEE MTT

DIMAS has published in April 2017 a new research paper at IEEE Transactions on Microwave Theory and Techniques. It is entitled “Enhanced Full-Wave Circuit Analysis for Modeling of a Split Cylinder Resonator” and presents another way of analysing the split resonator by circuit analysis. Circuit analysis applied to electromagnetic strutures is a technique that DIMAS has been developing last years, with several publications and applications specially in the field of dielectric characterization of material (dielectrometry).


2017-04-04-Imagen articulo MTT-David-v01

Split cavity and circuit analysis

In this case the improvement consists of using higher modes in the circuit characterization of all the simple networks that appear when the original structure is segmented into smallest and simplest ones. Then, not only the TM0np modes can be analysed but also all the set of TE and TM resonant modes that appear in the split cavity resonator.
The main application will be the possibility of using more resonant modes to characterize planar materials and to increase the frequency band where the permittivuity is calculated.
This paper is a part of the research work performed by David Marqués-Villarroya in his way to get the PhD in Electrical Engineering, and is the result of an extension of the original paper published in the International Microwave Symposium (IMS) held in San Francisco (USA) in May 2016.

New research paper in the “Journal of Food Engineering”

DIMAS has published a new research paper in early 2017 in the Journal of Food Engineering. The paper is entitled: “Dynamic measurement of dielectric properties of food snack pellets during microwave expansion“.

This is the result of a collaboration between PepsiCo R&D and DIMAS.


Calorimeter facility at DIMAS laboratory

The papers presents in situ dielectric properties measurements of a starch-based foodfood pellet during microwave expansion. To do this, a dual-mode cylindrical cavity that allowed simultaneous microwave heating and dielectric measurements of a single pellet inside a quartz tube was used, ensuring uniform heating during microwave processing.
This systemm in shown in the figure. It is a DIMAS facility that included additional measurement devices to correlate the dielectric properties with the main parameters of the expansion process, such as temperature, expansion time, pellet volume
and absorbed power.