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Distinguished Microwave Lecture: High-Efficiency Doherty Power Amplifiers at High Frequencies


on 15-09-2026

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The Doherty power amplifier remains one of the leading architectures for achieving high efficiency under power back-off. However, extending its operation to the C-, Ku-, and Ka-bands, as well as to mmWave frequencies, introduces significant practical challenges, including reduced device gain, increased parasitic effects, transmission-line losses, and AM/PM distortion arising from load modulation.

In this Distinguished Microwave Lecture, Vittorio Camarchia will explore circuit-level and system-aware approaches for achieving robust Doherty operation at high frequencies. The talk will address key aspects of the design process, including impedance-inverter implementation and loss mitigation, output and load compensation networks, bandwidth-extension techniques, driver and bias considerations, and linearity under wideband modulated signals, with particular attention to EVM, ACPR, and NPR performance.

The lecture will also examine MMIC implementations in GaN and GaAs, highlighting the trade-offs associated with different device technologies, as well as packaging challenges and measurement methodologies. Recent results and practical design guidelines will illustrate how efficiency, bandwidth, and linearity can be balanced to meet the increasingly demanding requirements of modern wireless and satellite communication systems.

 

Bio: 

Vittorio Camarchia is Associate Professor at the Department of Electronics and Telecommunications at Politecnico di Torino, Italy. His research focuses on high-efficiency RF and microwave power amplifiers and transmitters for 5G/6G and satellite communications, with particular emphasis on load-modulated architectures, including Doherty and Chireix/LMBA amplifiers, broadband linearization, and GaN/GaAs MMIC design.

Camarchia currently serves as Chair of IEEE MTT-S Technical Committee 23 (Wireless Communications) for 2025–2026 and has been appointed an IEEE MTT-S Distinguished Microwave Lecturer for 2026–2028.

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Tech MeetUps Industry 4.0 - Mobile Communications in Industrial Environment


on 09-06-2026

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The digital transformation of businesses is increasingly under the spotlight, driving fundamental mindset shifts and significantly boosting operational efficiency. Powered by rapid technological innovation and evolving consumer expectations, this transformation is now essential for organizations aiming to remain competitive in today’s dynamic market landscape.

In this context, what are the key impacts of digital technologies on Small and Medium Enterprises (SMEs)? How can organizations create greater value in a rapidly evolving digital environment? - These will be kick-off points of the discussion.



Session - Mobile Communications in Industrial Environment | June 9, 4:00-5:30 p.m.

This session will be led by Daniel Corujo, Associate Professor with Habilitation at the Department of Electronics, Telecommunications, and Informatics (DETI), and researcher at the Instituto de Telecomunicações. As a key figure within the Telecommunications and Networking Group (ATNoG), he has been at the forefront of innovation in advanced communication networks, including 5G, 6G, Software-Defined Networking (SDN), Virtualized Network Functions (VNFs), and Information-Centric Networking (ICN). With a robust research portfolio featuring over one hundred peer-reviewed scientific publications indexed in SCOPUS and contributions to global standardization bodies like IEEE and IETF, he also serves as a European Commission expert and is currently the Vice-Chair of the IEEE COMSOC Portugal Chapter.

 

This session will feature:

  1. Expanding Technological Scope of Mobile Communications: Unlike previous generations, 5G marks a paradigm shift, integrating a broad array of complementary technologies. This segment will explore the motivations and emerging requirements driving this convergence, along with use cases from various sectors.
  2. Vertical Market Use Cases: Real-world applications of mobile communication mechanisms in verticals such as transportation, energy, and manufacturing will be discussed. The presentation will also delve into pioneering uses of 5G and the transition toward Beyond-5G and 6G environments.
  3. Outlook and Opportunities Across Sectors: The flexibility and dynamism enabled by 5G are fostering innovation across numerous industries, SMEs, and public administration. Key research and development opportunities will be highlighted, showing how these technologies are reshaping industrial and societal processes.
  4. 5GAINER Laboratory Showcase: Attendees will have the opportunity to visualize aspects of the 5GAINER lab, housed at the Instituto de Telecomunicações, University of Aveiro Campus. This facility provides state-of-the-art mobile communication infrastructure and is a testbed for many of the mechanisms and services discussed during the presentation. More importantly, it presents a collaboration opportunity with interested parties, where technological trials and assessments can be jointly created, fostering digital build-up.
  5. Prototypes involving various technologies will be pictured, such as computer vision processing for real-time object classification; 5G network setups and vehicular networks; etc.


The showcase will be guided by PhD students David Santos and Rui Miguel Silva, both conducting research within ATNoG. Their work focuses on enabling advanced communication mechanisms suitable for deployment in vertical sectors, emphasizing network/resource federation and the orchestration of control and data planes.

 

Showcase Session - Pilot Cases and Technologies in Industry under ASCS TestBed | 5:30-6:00 p.m.

Following the session on Mobile Communications in Industrial Environments, we will introduce the Aveiro Smart Connected Spaces Test Bed - ASCS Test Bed, an initiative designed to accelerate the experimentation, validation, and adoption of advanced digital technologies in real-world environments.

The ASCS Test Bed provides a collaborative innovation infrastructure where companies, researchers, technology providers, and public entities can test and demonstrate solutions in areas such as 5G and advanced connectivity, IoT, smart spaces, data-driven services, artificial intelligence, cybersecurity, and digital platforms.

This demonstration moment is intended to showcase how the ASCS Test Bed can support the transition from research and concept development to practical deployment, helping organisations reduce technological risk, validate use cases, and explore new business and operational models.

This event promises to provide an engaging and insightful overview of the current and future landscape of mobile communications, bridging academic research with practical innovation.

 

Free attendance. Please register below: 

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