Somak Bhattacharyya
We are very happy to inform you that the IEEE Microwave Theory and Technology Society (MTT-S) Student Branch Chapter (SBC) Indian Institute of Technology (IIT BHU) Varanasi organized a seminar on “Opportunity in Chaos (Next-Generation Wireless Technologies),” on 19 September 2022 at 12 p.m. (India Standard Time). The speaker of the seminar was Dr. Tushar Sharma of Renesas Technology, an MTT-S AdCom member. The seminar was attended by 31 participants. See Figures 1–4.
Figure 1. A flyer of the talk by Dr. Tushar Sharma.
Figure 2. Dr. Tushar Sharma (right) leads a session at the Department of Electronics Engineering, Indian Institute of Technology (Banaras Hindu University), Varanasi, India.
Figure 3. Prof. Satyabrata Jit (right), senior professor of the host department, presents a token of appreciation to Dr. Tushar Sharma.
Figure 4. A group photograph of the participants with the speaker, Dr. Tushar Sharma (center).
Dr. Somak Bhattacharyya, faculty advisor of the MTT-S SBC IIT BHU, formally introduced the speaker. Dr. Sharma delivered his talk on high-frequency novel reconfigurable techniques in RF and millimeter-wave (mm-wave) transmitters, broadband high-power gallium nitride (GaN) power amplifiers, large signal device modeling, technology characterization, digital signal processing, mm-wave amplifiers, and waveform engineering.
RF power base station systems continue to put a lot of attention on power amplifiers (PAs). The session focused on a number of factors that enable compact cells and mm-wave PAs for 5G applications to operate with high efficiency and bandwidth. A wide range of PA design approaches for applications involving mm-wave, high-power, and broadband PAs between 6 and 100 GHz was also highlighted in the talk. To achieve high power efficiency across a broad frequency range, various waveform-tailored PAs have been proposed and implemented in GaN and indium phosphide. The session outlined a technology assessment pathway for characterizing the device performance utilizing sequential load-pull methodologies for both passive and active systems to allow the application of the major semiconductor technologies. The session also covered a process for designing high-efficiency PAs and how it enables PAs to operate in wide-bandwidth environments with high efficiency without sacrificing service quality. The talk was followed by some fruitful discussions, where the audience raised a few clarifications and expressed their gratitude to the speaker as well as the organizer. Finally, the event was concluded with a formal expression of thanks by Dr. Bhattacharyya.
Digital Object Identifier 10.1109/MMM.2022.3218237