Systems & Applications

The session focuses on advances in wireless power-beaming systems. The session will commence with a keynote talk on wireless power beaming. Following this, the session shows the latest advances in wireless power beaming, including phased array transceivers, multi-beam wireless energy harvesting arrays at 24GHz, beam scanning solutions in a Huygens box at 1GHz, and a system equipped with an integrated metamaterial-inspired absorber at 50 and 150MHz.

This session presents new and innovative works investigating microwave, mm-wave, and THz photonic-enabled systems. The session starts with a silicon photonic integrated beamformer in a phased array RF imaging system. Next we examine photonic-enabled THz phased arrays based on dielectric rod waveguides. This is followed by a 1-bit digital radio-over-fiber system for uplink and downlink communications and an ultra-wideband modular RF front-end for a photonic-enabled imaging receiver. The session closes with presentations on a wideband frequency hopping radio link based on microwave photonics and the generation and distribution of RF signals using a tuned optical paired laser source.

This session will be on devices and components for effective wireless power transfer. It will focus on the design and testing of high-efficiency mm-wave rectifiers based on FD-SOI CMOS technology and novel security and identification concepts for SWIPT (Simultaneous Wireless Information and Power Transfer) systems in IoT applications. Additionally, the session will cover a highly efficient GaAs rectenna MMIC with an electromagnetic coupling structure optimized for use with an external antenna. These pioneering advances highlight the ongoing progress in wireless energy conversion, IoT security, and high-frequency rectenna technology.

This session presents mm-wave key building blocks in CMOS and GaN processes for advanced phased arrays. We start with a W-Band switchless PA-LNA front-end that is followed by other compact and broadband 39 and 28GHz Tx/Rx designs. We end our session with a highly precise W-Band 7-bit phase shifter based on a voltage-summed vector modulator.

This session discusses state-of-the-art microwave photonic and electronic techniques to generate, amplify and radiate mm-wave and sub-THz signals. The first paper discusses sub-THz signal generation with very low linewidth using asymmetric locking of two lasers. The second paper describes broadband optical frequency-modulated continuous-wave (FMCW) signal generation using hybrid electronic-photonic techniques. The third paper is about widely tunable, photonically assisted, RF-sub-THz signal generation with frequency independent phase noise. The fourth paper achieves microwave signal amplification using injected semiconductor lasers. Finally, the last paper covers design and implementation of an on-chip topological filter antenna operating at 300GHz.

This session includes advanced techniques to design transmitter and receiver sub-systems operating at mm-wave frequency range. The keynote presentation in this session gives an interesting perspective about the AI-enhanced mm-wave systems. This is followed by the presentation on a 16-element dual-polarized phased array transceiver. The third talk presents a highly integrated sensing and communication transceiver. Next, a D-Band four-element transmitter array module with flip-chip aperture coupled antenna is presented. Finally, the session ends with a paper on K/Ka-band beam-forming front-end module with self-diplexing antenna.

This session will be exploring innovative designs and methodologies of radio frequency and microwave technologies. The presentations focus on the applications of RF/Microwave in sensing and monitoring processes, emphasizing wireless and contactless techniques. The discussion aims to probe the latest advances and breakthroughs in this field, offering insights into how these technologies can be effectively utilized in real scenarios. We will examine the practical implications of these technologies, assessing their potential impact and benefits in real-world applications.

This session presents new advances in system designs and signal processing for high-precision radar sensing applications. The topics range from ultra-precise micro-meter distance sensing, integrated radar designs for precise velocity measurement, and system concepts for improving the performance of radar systems.

This session highlights advances in low-altitude, stratospheric and low-earth-orbit radiometers and communication systems.

Distributed and multichannel radar systems have received significant attention in recent years owing to their ability to improve angular resolution and discrimination capabilities compared to traditional monostatic systems. The topics in this session range from wireless and digital synchronization of distributed radars, distributed repeaters for mm-wave imaging, and multichannel phased array radar.

The session addresses mixed-signal circuits and systems applied to ground penetrating radars to analyze sub-surfaces of planetary bodies, radio astronomy circuits for self-calibration, radiation-hardened and -tolerant synthesizers, and real-time digital linearization techniques for high-linearity power amplifiers.

This session focuses on recent advances in radar sensing technologies and their various applications, which include innovative radar structures, heart-rate sensing, and interferometric sensing of moving objects.

Remote sensing of human vital-signs such as heartbeat or respiratory rate will become increasingly important in an aging society. This session will present interesting radar concepts tailored to these tasks by discriminating the vibrations on the body surface from random body movements to the respective vital-signs under monitoring. All papers will present ideas that enable hardware structures with reduced complexity compared to conventional approaches. The session will focus on the specific system and hardware aspects of self-injection locking radar. In addition, a sophisticated proposal for metamaterials for space-time encoding will also be presented.

This session showcases five papers in the area of reconfigurable intelligent surfaces (RIS), antennas, and beamformers. The first paper presents an 8GHz 32×32-element RIS to enhance non-line-of-sight (NLOS) communications. The second paper introduces a 16×16-element RIS array at 28GHz, adopting a phase randomization technique introduced to suppress lobes. The third paper presents a 11-port wire antenna capable of beam steering from 5–18GHz. The fourth paper explores a space-time-modulated metamaterial antenna, functioning as a beam-space multiple-input multiple-output (MIMO) receiver. The last paper presents a fully-passive, 4-channel RF beamformer at 12GHz for power-constrained applications.

This session is focusing on advances in microwave biomedical applications. It will notably present innovative orientations of MRI systems featuring STAR using wearable RF transceiver and investigating MR safety with active implantable medical devices. Moreover, an in-body microwave thermometry concept will be discussed with a focus on RF interference cancellation. Finally, the electroporation effect will be explored in combination with microwave biosensing.

This session is comprised of papers that present advanced circuits and techniques for next-generation wireless systems. Discussion topics include active calibration for MIMO transmitters, a load-modulated balanced amplifier with an antenna interface, an analog self-interference canceller that mitigates tap loss, an integrated full-duplex front-end at 75–100GHz, and a 130GHz OOK-doubler circuit heterogeneously integrated with a glass antenna for scalable array systems.