Doubling Down on Wireless Capacity: A Review of Integrated Circuits, Systems, and Networks for Full Duplex

A Nagulu, N Reiskarimian, T Chen… - Proceedings of the …, 2024 - ieeexplore.ieee.org
The relentless demand for data in our society has driven the continuous evolution of
wireless technologies to enhance network capacity. While current deployments of 5G have …

Non-magnetic non-reciprocal microwave components—State of the art and future directions

A Nagulu, H Krishnaswamy - IEEE Journal of Microwaves, 2021 - ieeexplore.ieee.org
Non-reciprocal components such as circulators, isolators and gyrators find utility in
numerous microwave wireless applications, including high-power transmitters, simultaneous …

Nonreciprocal bandpass filter using mixed static and time-modulated resonators

G Chaudhary, Y Jeong - IEEE Microwave and Wireless …, 2021 - ieeexplore.ieee.org
This letter presents a magnet-less nonreciprocal bandpass filter (BPF) that uses coupled
static and time-modulated resonators. This coupling allows the nonreciprocal BPF to …

Multi-watt, 1-GHz CMOS circulator based on switched-capacitor clock boosting

A Nagulu, T Chen, G Zussman… - IEEE Journal of Solid …, 2020 - ieeexplore.ieee.org
There has been significant recent progress in the implementation of integrated non-
reciprocal components based on linear periodically time-varying (LPTV) circuits …

Manipulating the nonreciprocal microwave transmission by using a pump-induced magnon mode

Z Chen, J Rao, KX Zhao, F Yang, CX Wang… - Applied Physics …, 2024 - pubs.aip.org
We realize the electromagnetic regulation of nonreciprocal microwave transmission by
introducing a pump-induced magnon mode (PIM) into a cavity magnonic device with …

Frequency tunable impedance matching nonreciprocal bandpass filter using time-modulated quarter-wave resonators

G Chaudhary, Y Jeong - IEEE Transactions on Industrial …, 2021 - ieeexplore.ieee.org
In this article, we present a frequency tunable magnetless nonreciprocal bandpass filter
(BPF) that uses time-modulated quarter-wave microstrip line resonators. The proposed …

Incorporating directionality in transversal-resonator-based bandpass filters with tunable transfer function characteristics

Z Zhang, D Psychogiou - … on Circuits and Systems I: Regular …, 2023 - ieeexplore.ieee.org
This paper introduces a detailed methodology for the realization of multi-functional
transversal resonator-based non-reciprocal bandpass filters (NR-BPFs) that combine the …

Radio frequency magnet-free circulators based on spatiotemporal modulation of surface acoustic wave filters

Y Yu, G Michetti, M Pirro, A Kord… - IEEE Transactions …, 2019 - ieeexplore.ieee.org
In this article, a new generation of magnet-free circulators with high performance is
proposed. Circulators are crucial devices in modern communication systems due to their …

Unequal power division ratio nonreciprocal filtering power divider with arbitrary termination impedance and center frequency tunability

G Chaudhary, Y Jeong - IEEE Transactions on Microwave …, 2023 - ieeexplore.ieee.org
This article presents RF design and practical implementation of a nonreciprocal filtering
power divider that enables arbitrary power division ratio () and center frequency tunability …

Ultra-wideband switched-capacitor delays and circulators—Theory and implementation

A Nagulu, A Mekkawy, M Tymchenko… - IEEE Journal of Solid …, 2021 - ieeexplore.ieee.org
Recent research has revealed the possibility to achieve non-magnetic non-reciprocity using
time variance. However, prior CMOS-based circulators rely on the interference between non …