Reconfigurable non-foster elements and squint-free beamforming networks using active transversal filter-based negative group delay circuit

M Zhu, CTM Wu - IEEE Transactions on Microwave Theory and …, 2021 - ieeexplore.ieee.org
A new type of reconfigurable negative group delay (NGD) circuits based on active
transversal filter topology is introduced in this work. By incorporating varactors with the NGD …

A Broadband Amplifier with Low Group Delay Variation Implemented

Y Wang, T Yuan, G Liu, J Zhou, W Liu… - 2022 IEEE MTT-S …, 2022 - ieeexplore.ieee.org
In this paper, a DC to 40 GHz distributed amplifier (DA) employing the negative group delay
technique has been successfully implemented using 0.15 μm GaAs pHEMT process. It is …

Negative Group Delay-Enabled Reconfigurable Non-Foster Elements and Beamforming Networks

M Zhu - 2021 - search.proquest.com
As a counterintuitive phenomenon, negative group delay (NGD) was first found in regions of
strong anomalous dispersion. The peak of the pulse emerges from the device's output at an …