Normally, presentations were given on the state-of-the-art research results in each field such as AP/MW/RCS/ED. This time, however, we asked young researchers who are active in radio-related R&D to give presentations without being restricted to a specific field, and the session was finally organized with presentations by five researchers. In the circumstances where the number of young researchers is decreasing, we asked all the speakers to be young people, and it was a very valuable opportunity to establish a good connection between well experienced researchers and young researchers. It would be very valuable to continue organizing young researchers' session in the future, even if it is an infrequent event, as it will surely be a very valuable opportunity for them.

Dr. Yasutaka Murakami (The University of Electro-Communications) introduced the research and development of metamaterial-based electromagnetic scattering sheet to eliminate the eliminating dead zones in 5G. Simulation and measurement results showed that a wide-angle scattering pattern can be realized in 28 GHz band by reflecting on the metamaterial-based electromagnetic scattering sheet designed in this study.

Mr. Gen Nakayama (Institute of Science Tokyo) introduced a mechanical beam steering transmitarray with Gaussian beam illumination. It was shown that the gain degradation at the wide angle during beam scanning was improved by adding a planar lens that generates a Gaussian beam between the transmitter array and the primary feed. It was also reported that the primary feed and Gaussian lens could be replaced with an integrated radial line curl array antenna to make the low profile.

Dr. Hideya So (Kogakuin University) introduced a fast beam search and synchronization method for beam steering assuming 6G. The synchronization signal block (SSB) is required for the number of the beams in conventional multiple beams searching method. The proposed approach can determine the optimal beam while reducing the number of SSBs relative to the number of beams.

Mr. Taiyo Ushiyama (The University of Electro-Communications) introduced a wideband quadrature hybrid coupler for the ALMA telescope next-generation receiver wideband upgrade. The hybrid coupler for IF of Band 8 (385-500 GHz) needs to cover more than twice the frequency. He reported the measurement results of the coupled-line type hybrid coupler corresponding to 3-21 GHz.

Dr. Atsushi Shirane (Institute of Science Tokyo) introduced the technology of phased-array transmitter for satellite communication (SATCOM) applications. He reported the technology of magnetic field-coupled phase shifters that realize the high radiation immunity required for RFICs for SATCOM and the technology to realize LNAs with low power consumption for Ka-band phased-array transmitter.

Each of these presentations addressed technologies that are important research contents for future radio-related technologies, and it was very beneficial for both sides to have active discussions between young and experienced researchers through this event.