Brevetti +, promoted by the Ministry of Economic Development and managed by Invitalia, is a project for the economic exploitation of the patent on our tunable bandpass filter.




The project aims to commercialize tunable filters with the patent n. ‘102017000131316’ title ‘FILTRO PASSABANDA SINTONIZZABILE’. The project has a total duration of 18 months.

This is a key device underlying the electronics used in radio links. Unlike traditional filters, which can select only one frequency, the patent concerns a filter that can change its frequency.

This leads to the possibility of installing a single device in a large part of the radio link and then remotely tuning it to the desired frequency. The economic advantage of this is obvious, especially in the reduction of installation and maintenance costs of the equipment, having to deal with a single device instead of dozens of different types.

Three reference frequency bands will be considered for the study and tests that will correspond to the development of three different implementations of tunable filters:

1) the S band (2-3GHz)
2) the C band (3-5GHz)
3) the X band (8-10GHz)

Each of these frequency bands corresponds to a different possible application. In the specific case, the C band and the X band can be associated with the terrestrial market of radio links for terrestrial telecommunications, while the S band can be associated with satellite applications.



Started phase 1



The filters to date have been designed in their electrical/electronic characteristics and the prototype are going to be fabricated and tested.



The project is divided into three macro-activities. Of these, two are technical and sequential to each other, while the third is non-technical and is expected to run parallel to the other two.

  1. The first technical phase aims to design and validate a first pre-series of filters. This first pre-series can be called prototyping pre-series and has the purpose of validating the correct functioning of the filters experimentally and with reference to the reference environmental qualification specifications. At the end of the environmental validation tests the middle of the project is reached which includes a moment of reflection and analysis of the results which is called PDR (Preliminary Design Review).
  2. The second technical phase retraces activities similar to those of phase 1. In this second phase whose final objects are pre-series products, the electromagnetic and mechanical designs are refined. At the end of phase 2 the CDR (Critical Design Review) is foreseen, which has the purpose of completing the technical development activity and moving on to the marketing phase.
  3. In parallel to these two technical phases, a third non-technical phase is foreseen which includes two outsourced activities:
    • the first aims to carry out an in-depth market study aimed at detailing and consolidating the preliminary study made at the time of the project proposal;
    • the other activity that is foreseen in sequence to the first involves the analysis of communication channels for the direct market and coaching in order to adapt the company structure for the production of tunable filters.





RF Microtech S.r.l. Italy



blank blank Brevetti+ is an incentive to exploit the most up-to-date patents and the most qualified projects deriving from the results of public and private research.
The aim is to support the innovative and competitive capacity of micro, small and medium-sized enterprises through the valorization and economic exploitation of patents on national and international markets.


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