The IEEE MTT International Microwave Symposium (IMS) is the premier annual international meeting for technologists involved in all aspects of microwave theory and practice. It consists of a full week of events, including technical paper presentations, workshops, and tutorials, as well as numerous social events and networking opportunities. The symposium also hosts a large commercial exhibition.

Co-located with IMS are the IEEE RFIC, IMBioC and ARFTG conferences.



The IEEE MTT International Microwave Symposium 2022 (IMS), organized by IEEE and MTTs, will take place from 19 to 24 June 2022 in Denver, CO.

More info about the event on the IMS website

Don’t miss our participation in the technical session!


Space RF Microtech Applications
Tuesday, 21 June | 10:10 – 11:50 | Session: Tu2A-3 – Advances in Non-Planar Filter Technologies, Paolo Vallerotonda, R&D Engineer at RF Microtech, presents:

Compact Ultra-Wideband Cavity Filter Based on Suspended Ceramic Resonators in Additive Manufacturing

Find out more about the full technical session!


Short abstract

The design and first experimental results of a 4th order quasi-elliptic C-band ultra-wideband filter working at 6.3 GHz with 1.55 GHz bandwidth (FBW=24.6%) are presented in this paper. The peculiarity of this filter is that this ultra-wide band response is obtained by using dielectric resonators, thus overcoming one of the major limitation of the dielectric filters: their narrow-band behavior. The proposed filter is based on TM01δ mode dielectric loaded resonators fabricated by additive manufacturing. These allow for better results in terms of volume occupation with respect to other dielectric resonators still maintaining high unloaded Q-factor values (>2000). In the proposed solution each dielectric resonator and its supporting elements are fully fabricated in a single piece using ceramic additive manufacturing process. This allows for improving the Q-factor since no additional, potentially lossy, materials and support mechanisms are needed. The feasibility of the proposed approach was experimentally demonstrated through the measurements of a preliminary manufactured prototype.



We’ll be waiting at Colorado Convention Center in Denver, CO!

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