An Area- and Energy-Efficient Ultrasonic Pulser Based on Self-timed Stepwise Charging

Acoustoelectric imaging is an emerging technology confirmed by in-vivo experiments that can help diagnose and evaluate peripheral nerve neuropathy. The ultrasound transmitter (TX) is required in such systems to selectively focus and apply acoustic pressure on the target volume. Within the ultrasound TX, the power amplifier (PA, commonly called...

Compact N-Way Doherty Power Combiners for mm-wave 5G Transmitters

This paper presents a design procedure for compact lumped-element 3-/4-/5-way Doherty power combiners suitable for mm-wave 5G transmitters. Among them, the 3-way Doherty power combiner is favored due to its low complexity, compact layout, and average drain efficiency at 12 dB power back-off (PBO) when implemented using lossy lumped elements....

Circuit Design for Highly Sensitive RF-Powered Wireless Sensor Nodes

Emerging applications such as Internet of Things (IoT), smart buildings and warehouse inventory management are important driving forces behind the development of Wireless Sensor Nodes (WSNs). With future advancements made in the semiconductor industry, these WSNs are expected to become smaller, cheaper, more reliable and with improved...

Wideband Class-B Power Amplifiers

Vanwege vertrouwelijke informatie of andere redenen is slechts een deel van de publicatie opgenomen in de repository. Due to confidential information or other reasons only a part of the publication is presented in the repository. Wideband Class-B power amplifier is required in Modern communication systems. The bandwidth limitation of Class-B...