Gas spectroscopy system for breath analysis at mm-wave/THz using SiGe BiCMOS circuits

K Schmalz, N Rothbart, PFX Neumaier… - IEEE Transactions …, 2017 - ieeexplore.ieee.org
The unique fingerprint spectra of volatile organic compounds for breath analysis and toxic
industrial chemicals make an mm-wave (mmW)/THz gas sensor very specific and sensitive …

Analysis and design of wide-band millimeter-wave transformer-based VCO and ILFDs

Y Chao, HC Luong - … Transactions on Circuits and Systems I …, 2016 - ieeexplore.ieee.org
Several transformer-based techniques are proposed to enhance the frequency tuning range
of mm-wave voltage-controlled oscillators (VCOs) and the frequency locking range of …

85-to-127 GHz CMOS signal generation using a quadrature VCO with passive coupling and broadband harmonic combining for rotational spectroscopy

J Zhang, N Sharma, W Choi, D Shim… - IEEE Journal of Solid …, 2015 - ieeexplore.ieee.org
A quadrature LC-VCO incorporating passive coupling and broadband harmonic combining
for frequency multiplication by 4, and NMOS switched variable inductors is fabricated in 65 …

245-GHz transmitter array in SiGe BiCMOS for gas spectroscopy

K Schmalz, J Borngräber, W Debski… - IEEE Transactions …, 2016 - ieeexplore.ieee.org
A 245-GHz transmitter (TX) array with an integrated antenna-array for a gas spectroscopy
system has been realized. It consists of a push-push VCO with a 1/64 frequency divider …

160–310 GHz frequency doubler in 65-nm CMOS with 3-dBm peak output power for rotational spectroscopy

N Sharma, W Choi, KO Kenneth - 2016 IEEE Radio Frequency …, 2016 - ieeexplore.ieee.org
A 160-310 GHz frequency doubler for rotational spectroscopy with a driver amplifier is
demonstrated in a 65-nm bulk CMOS process. At 0-dBm input power, the measured output …

A 148-GHz radiator using a coupled loop oscillator with a quad-feed antenna in 22-nm FD-SOI

MW Mansha, MM Hella - IEEE Journal of Solid-State Circuits, 2021 - ieeexplore.ieee.org
This article presents a 148-GHz coupled loop fundamental oscillator with a quad-feed
octagonal slot antenna. The proposed loop configuration with a multi-feed antenna leads to …

Precompensation and system parameters estimation for low-cost nonlinear tera-hertz transmitters in the presence of I/Q imbalance

YR Ramadan, H Minn, ME Abdelgelil - IEEE Access, 2018 - ieeexplore.ieee.org
Tera-Hertz (THz) transmission can offer several attractive applications, yet develo** low-
cost energy-efficient THz devices is at an early stage. The most promising low-cost THz …

180-GHz pulsed CMOS transmitter for molecular sensing

DJ Nemchick, H Hakopian, BJ Drouin… - IEEE Transactions …, 2021 - ieeexplore.ieee.org
The performance of a CMOS transmitter designed for planetary science in situ molecular
sensing applications having an operational bandwidth of 180-190 GHz and peak output …

[HTML][HTML] A 90-102 GHz CMOS based pulsed Fourier transform spectrometer: New approaches for in situ chemical detection and millimeter-wave cavity-based …

DJ Nemchick, BJ Drouin, MJ Cich, T Crawford… - Review of Scientific …, 2018 - pubs.aip.org
We present a system level description of a cavity-enhanced millimeter-wave spectrometer
that is the first in its class to combine source and detection electronics constructed from …

Complementary metal oxide semiconductor integrated circuits for rotational spectroscopy

N Sharma, Q Zhong, W Choi, J Zhang… - Next-Generation …, 2020 - spiedigitallibrary.org
CMOS (Complementary Metal Oxide Semiconductor) transmitter and receiver circuits for
rotational spectroscopy are demonstrated. The IC's implemented in 65-nm CMOS consist of …