Technical Sessions
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This session highlights innovations and techniques in integrated mm-wave and sub-THz hardware for advanced radar and sensing applications.
This session covers innovations in high-speed wired and wireless links. The first paper presents 3-level ASK modulator for a 15Gb/s wired link. The final 3 papers present wireless communication from an efficient V-bank transmitter to receiver-assisted transmitter linearization and a joint communication and sensing platform.
This session discusses practical realizations of state-of-the-art microwave photonics systems and integrated circuits. The session begins with a multi-static, multi-band photonics MIMO radar. An ultra-low phase noise opto-electronic frequency synthesizer is covered next followed by a multi-channel microwave photonic transmitter for RoF applications. The session is concluded with two papers discussing integrated photonic circuits.
This session focuses on recent advances in Doherty power amplifiers. This load modulation technology is pushed to higher frequencies above 7GHz, higher output power, extended power back-off range, and unprecedented instantaneous bandwidth for emerging wireless infrastructure.
This session covers advances in microwave technologies related to quantum computing. The session begins with two papers relevant to quantum computing readout. First a cryo-CMOS single-sideband upconverter is presented for qubit readout waveform generation and then the systematic design of parametric amplifiers using electromagnetic- and schematic-level simulations is described. Next, a wideband cryogenic VCO for use in qubit control/measurement systems is presented. This is followed by a description of research in cryogenic RF-over-fiber links. Finally, the session concludes with the presentation of a high-coherence architecture for packaging superconducting quantum processors.
In this session, various novel Wireless Power Transfer (WPT) systems for smart cities and biomedical applications will be highlighted, with an emphasis on energy efficiency, beam-steering, and miniaturized design. Featured contributions include innovations such as broad-beam equiconvex lens-integrated mm-wave harvester for 5G-powered environments, time-multiplexed beam-steering antenna array for programmable RF powering of CMOS brain implants, and supply voltage modulation method to address efficiency degradation. Additional advances include flexible rectennas for ambient RF energy harvesting in IoT applications and single-ended capacitive WPT circuit for artificial retina systems. Collectively, these breakthroughs pave the way for sustainable and efficient WPT solutions across diverse applications.
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This session presents recent developments in mm-wave wireless systems for sensing and communication. Advanced techniques for MIMO radar, three-dimensional radar imaging, radar networks, and joint sensing and communication are presented through six detailed presentations.
This session focuses on MHz-to-THz technology for human body communication and other sensing applications. The keynote discusses field interactions in the human body and the second paper demonstrates the human body power transfer. A novel technique to improve underwater communication is presented in the fourth paper and the session concludes using a W-band FMCW radar for smart smoke detection.
This session discusses photonically enabled THz sources, detectors, novel integration techniques as well as systems for applications ranging from communication to sensing.
This session includes several transmit components with over 10W of output power, including a decade-bandwidth 0.2–2GHz load-modulated balanced amplifier, several integrated Doherty PA modules and an E-mode dual-gate SPDT switch.
This session showcases advances in the intersection between AI and RF systems. Highlights include AI-enabled device-level modeling and characterization, power amplifier digital predistortion, and system-level transceiver optimization.
This session delves into cutting-edge innovations in RF rectifier design, showcasing advances that push the boundaries of efficiency, dynamic range, and compact integration for Wireless Power Transfer (WPT) systems. Presentations will explore novel techniques such as impedance splitting, compression networks, harmonic suppression, and resonance enhancements to achieve superior RF-to-DC conversion efficiencies. Join us to explore how these developments enable scalable, high-performance WPT solutions for emerging applications.
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This scientific session will delve into cutting-edge technologies and methodologies in biomedical applications, focusing on devices and systems for medical imaging and diagnostics. Key topics will include the latest advances in magnetic resonance imaging, which enhance imaging resolution and improve patient experience; dielectric spectroscopy for non-invasive tissue characterization; advanced thermometry techniques that enable precise temperature monitoring in therapeutic environments; and the development of resonant microwave biosensors for rapid and sensitive biomolecular detection. We will explore innovative concepts that bridge engineering and medicine, fostering interdisciplinary collaboration aimed at improving patient outcomes and advancing healthcare technologies.
This session presents five cutting-edge papers showcasing recent advances in sub-THz and mm-wave phased array systems. The first paper introduces a 150GHz AiP phased array module, highlighting its innovative design and performance. The second paper explores a 28GHz monolithic heterogeneous integrated GaN and Si beamformer, emphasizing its integration. The third paper discusses a 4x4 Butler matrix-based switched beamformer, detailing its architecture and application. The fourth paper presents a novel body proximity detection technique utilizing reflections from a mm-wave phased array, demonstrating its potential in various applications. The final paper describes linearization techniques for a dual-band near-field probing approach, showcasing significant improvements in performance.
Al Katz passed away on the morning of June 20, 2024, the day he had been scheduled to give a presentation at IMS'24. Today we remember Al Katz and his work on analog linearization. The session will begin with recollections by his widow Sally. Amateur radio was an important factor in Al's becoming an engineer, so we will next present his accomplishments as a radio amateur. Al's work on linearization led to the formation and growth of the Linearizer Technology Company, which will be the next topic of discussion. The fourth segment provides an overview of analog linearization and the current state-of-the-art. Finally, members of the audience will be encouraged to give their recollections of Al Katz.
This session explores new approaches for sub-THz and THz signal generation, spanning diverse technologies and architectures. The first paper presents a 4–240GHz InP variable-gain amplifier employing an analog-controlled input attenuation network for versatile performance tuning. Next, a 4–420GHz distributed amplifier MMIC in 20nm InGaAs-on-Si HEMT technology achieves 11±2dB of gain. A 280GHz sub-harmonic injection-locked oscillator in 45nm CMOS PD SOI demonstrates robust frequency generation. Finally, a 300GHz-band single-balanced resistive mixer module in 60nm InP HEMT features LO leakage suppression. Collectively, these designs pave the way for next-generation THz communication systems.
This session contains 5 papers on analog predistortion focusing on very high frequency, MIMO systems, and circuit techniques including phase-cancellation, Doherty and Darlington power amplifier architectures.
This session explores the integration of wireless sensors, RF selective surfaces, and innovative power harvesting techniques in the design of energy-efficient microwave and RF sensors.
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Biomedical radar technology has the potential to transform patient monitoring and search and rescue applications. This session explores the state-of-the-art advances in high precision single and multiple subject detection and monitoring.
This session explores advanced antenna and surface technologies addressing key challenges in next-generation wireless communication, including energy efficiency, adaptability, and sensing-communication integration. The session includes a first paper for shape estimation and beam correction in flexible phased arrays, followed by a dual-polarized true-time-delay-based Reconfigurable Intelligent surface (RIS), chirp-based beamwidth control in RIS for mm-wave systems, and a multi-feed active antenna module achieving reconfigurable polarization. Additional presentations feature a 2-bit RIS enabling polarization-based sensing and communication, a liquid crystal-based RIS with energy-efficient bias pulse technology. Together, these innovations demonstrate transformative potential in reconfigurable systems for future wireless networks.
This session features the latest developments in the production of RF power at frequencies up to 1GHz. The session begins with a survey of transistors for production of 1kW or more of RF power. Next the session addresses operation over wide bandwidths with both ferrite-loaded baluns and continuous-mode operation of an amplifier. Techniques for driving switching-mode power amplifiers and for directly interfacing high-efficiency amplifiers to antennas are described. Finally, the session includes a comparison of EER and Doherty techniques for high-efficiency operation at VHF.
This session brings together four papers showcasing sub-THz and THz signal modulation techniques for next-generation communication systems. The first paper introduces attenuator-based vector modulation strategies for phased arrays operating from 200 to 480GHz. The second paper demonstrates a novel photoconductive solid-state plasma evanescent-mode waveguide for sub-THz phase shifting. The third paper presents a compact 8.2mW complementary current-reusing D-band frequency quadrupler implemented in 22nm FDSOI CMOS. Finally, the fourth paper compares wideband low-power H-band frequency doublers, with and without driving stages, also in 22nm FDSOI CMOS, highlighting performance trade-offs. These advances significantly elevate future sub-THz communications.
This session consists of 5 papers including the keynote paper "Efficiency Enhancements using Digital Predistortion and Advanced Transmitters". The remaining 4 papers address the challenges of linearization in emerging phased array systems, novel machine learning and DSP solutions to improve radio performance.
This session showcases cutting-edge innovations in satellite communication and remote sensing technologies, highlighting advances in antennas, phased arrays, and transceivers.