Researcher

Ali Ameri

sub-THz Imaging Techniques for Biomedical Applications:

In our research, we investigate permittivity-based sensing and imaging techniques at mmWave and sub-THz frequency range for real-time in-vitro monitoring of biological samples at the single cell and tissue levels.

Jongbeom Baek

Discrete Envelope Tracking for Wideband mm-Wave Power Amplifiers

Envelope tracking (ET) is in wide use to improve the efficiencies of power amplifiers (PA) which increases
battery life of multiband wireless communication systems. Although most supply modulators (SM) adopt
a hybrid topology which is composed of a high-efficiency switching converter and wide-bandwidth linear
amplifier, it has reached their intrinsic limitation in terms of channel bandwidth. This is due to the new
specifications of the uplink channel bandwidth of 5G FR2 up to 400MHz for...

Hesham Beshary

Sub-THz Wideband Massive Phase Arrays

A 2X2 RF beamformer at 140 GHz that integrates 4TX/RX elements with on-chip antennas and LO chain
in 2.1mmX2.1mm. The chip will be integrated on a package as a tile to build a scalable 2-D hybrid array.
A wideband design is adopted with ~20% fractional bandwidth. This work is taped-out in 28nm bulk
CMOS technology.

Rohit Braganza

Broadband mmWave PAs

My work is on designing bulk cmos power amplifiers that can operate across the entirety of the Ka (26.5-
>40GHz) frequency band. This is done by the use of broadband, transmission line type of passive
structures.

Yikuan Chen

Next Generation FMCW Radar with Interference RF-cancellation

In an FMCW radar system, Tx and Rx must operate concurrently. Thus the chirp signal can leak from
multiple places of the Tx into the Rx chain, often at significantly higher power than the reflection from
the actual targets, causing saturation in the various stages of Rx and reducing dynamic range of the
receiver. In our 140GHz FMCW radar chip, we proposed and implemented a method to mitigate the
leakage at the RF stage, improving the front end gain headroom by ~30dB. The chip was taped...

Yufeng Chi

Junsun Choi

RPC Integration on hyperscale accelerators

Integrating the RPC layer to an SoC that consists of hyperscale accelerators, optimizing the software-
level scheduling of workloads

Sunjin Choi

SuperFabric IO

High-bandwidth, low-power, burst-mode photonic IO for optical circuit switch-based fabric.

Alexander Chou

Antroy Chowdhury

Coherent Transceivers for Intra data center Co-Packaged Optical Links

As the bandwidth density requirement of intra-data center links keep on increasing, optical interconnects play a significantly important roles compared to the conventional electrical interconnects. Co-packaged optics, in contrary to the standard pluggable optics solutions, is capable of bringing a revolution in bandwidth density of optical interconnects due to the reduced length of electrical channels which increases the baud rate of data transfer. On the top of that, making the best use of...