We present a high-efficiency wireless powering architecture designed for subcortical medical implants. Conventional inductive links struggle to bridge the mid-field gap, where the power density decays...
This work presents a flexible phased array tile designed and fabricated for wireless power transfer at 10 GHz. The system is driven by custom CMOS RFICs fabricated in a 22 nm CMOS FDSOI process. The c...
This paper proposes a CMOS rectifier-type mixer where the mixing operation and rectification can be optimized independently. The proposed circuit utilizes a 24 GHz wireless power transfer (WPT) signal...
This paper presents a self-powered antenna monitoring system (AMS) that energy harvesting from a directional coupler on the downlink of a distributed antenna system (DAS). Each ceiling module operates...
A 241-271 GHz 3TX-4RX sparse and linear multi-input multi-output (MIMO) radar is demonstrated with the TX antenna spacing of 1.2 mm and the RX antenna spacings of 1.8 mm and 3.0 mm. Using coprime arra...
Detection of specular targets is a significant challenge for single-platform radar systems. The mirror-like reflections direct energy away from the radar receiver, reducing the signal-to-noise ratio (...
Static radar parameters fix the obtainable sensing range and force high RF power/gain, often wasting energy and requiring multiple modules to cover different ranges. We develop a closed-loop, range-aw...
This paper presents a state-of-the-art FMCW imaging radar system capable of both high resolution diffraction-limited 3-D imaging and micro-Doppler based speech reconstruction. The system consists of a...
This paper presents a low-loss, wideband dielectric resonator antenna (DRA) integrated on a system-in-package (SiP) for high-performance 60 GHz radar modules. Conventional patch-based radars suffer fr...
A fully integrated 18.6–20.4 GHz FMCW synthesizer for automotive radar applications is presented. The design employs a dual-loop PLL with feedback down-conversion and a transformer-based VCO to addres...