Results 71 to 80 of about 5,099,079 (342)

Ultra-Low Noise Figure in Optical Fiber Amplifier by Tailoring the Mode Field Profile of Erbium-Doped Fiber

IEEE Photonics Journal, 2022
We present a numerical analysis of noise performance improvement of the erbium-doped fiber amplifier by flatting the mode field intensity distribution within the interaction region of erbium ions.
Qiang Qiu, Zhimu Gu, Le He, Yang Chen, Yang Lou, Jinggang Peng, HaiQing Li, Yingbin Xing, Yingbo Chu, Nengli Dai, Jinyan Li   +10 more
doaj   +1 more source

Deciphering transcriptional plasticity in pancreatic ductal adenocarcinoma reveals alterations in sensory neuron innervation

Molecular Oncology, EarlyView.
Pancreatic sensory neurons innervating healthy and PDAC tissue were retrogradely labeled and profiled by single‐cell RNA sequencing. Tumor‐associated innervation showed a dominant neurofilament‐positive subtype, altered mitochondrial gene signatures, and reduced non‐peptidergic neurons.
Elena Genova, Michele Montrone, Uday Rangaswamy, Francesco Diversi, Irene Schiavo, Denise Ferrarini, Roberta Di Florio, Irene Longo, Michele Coscia, Nicola Zamboni, Giorgia Demontis, Lisa Veghini, Vincenzo Corbo, Remo Sanges, Paul Heppenstall   +14 more
wiley   +1 more source

Q-Band LNA-Antenna Co-Design: Exploiting Antenna Matching for System Noise Figure Optimization

IEEE Journal of Microwaves
This paper presents a novel approach to low noise amplifier (LNA)-antenna co-design in the Q-band frequency range, leveraging the antenna as an integral part of the LNA matching network to achieve broadband noise figure improvement.Unlike conventional ...
Kirill Alekseev, Martin Johansson, Klas Eriksson, Bart Smolders, Roger Lozar, Remco Heijs, Ulf Johannsen   +6 more
doaj   +1 more source

Realisasi LNA Dua Tingkat dengan Teknik Penyesuai Impedansi Trafo λ/4 dan Lumped Element untuk DVB-T2

Jurnal Elkomika, 2020
ABSTRAK Digital Video Broadcasting-Second Generation Terrestrial (DVB-T2) merupakan standar internasional yang menaungi pemberlakuan televisi digital saat ini. Pada konfigurasi DVB-T2 terdapat perangkat penerima sinyal di sisi pelanggan.
ASEP KARYANA, YUYUN SITI ROHMAH, BUDI PRASETYA   +2 more
doaj   +1 more source

Phase sensitive amplification with noise figure below the 3 dB quantum limit using CW pumped PPLN waveguide.

Optics Express, 2012
The noise figure (NF) of a phase sensitive amplifier (PSA) based on a periodically poled LiNbO3 (PPLN) waveguide was evaluated in the optical and electrical domains.
M. Asobe, T. Umeki, O. Tadanaga
semanticscholar   +1 more source

Clinical performance of the urine‐based TERT promoter AbsoluteQ Digital PCR for non‐invasive detection of bladder cancer

Molecular Oncology, EarlyView.
A urine‐based digital PCR assay targeting two hotspot TERT promoter variants detected bladder cancer with high sensitivity and no false positives in this case–control cohort. The streamlined AbsoluteQ workflow outperformed Sanger sequencing and supports non‐invasive molecular testing for bladder cancer detection.
Anna Nykel, Izabela Kubiak, Lena Rutkowska, Żaneta Kasprzyk, Łukasz Kępczyński, Michał Bednarek, Dariusz Sobieraj, Jacek Wilkosz, Piotr Kania, Adam Jędrzejczyk, Bogdan Kałużewski, Agnieszka Gach, Tadeusz Kałużewski   +12 more
wiley   +1 more source

Optimizing Low Noise Amplifiers: A Two-Stage Approach for Improved Noise Figure and Stability

IEEE Access
This study introduces a new design for a low noise amplifier (LNA) consisting of two stages taking advantage of the inherent lossy properties of the input matching components. By doing this, the design balances the minimum noise figure (NF) and stability,
Mohammad Zaid, Purnima Kumari, Ahtisham Pampori, Mohammad Sajid Nazir, Umakant Goyal, Meena Mishra, Yogesh Singh Chauhan   +6 more
doaj   +1 more source

Intrinsic noise induced resonance in presence of sub-threshold signal in Brusselator

, 2011
In a system of non-linear chemical reactions called the Brusselator, we show that {\it intrinsic noise} can be regulated to drive it to exhibit resonance in the presence of a sub-threshold signal.
Bartholomay A. F., Dibyendu Das, P. Parmananda, Stacey W. C., Supravat Dey   +4 more
core   +2 more sources

Passive, broadband and low-frequency suppression of laser amplitude noise to the shot-noise limit using hollow-core fibre [PDF]

, 2019
We use hollow-core fibre to preserve the spectrum and temporal profile of picosecond laser pulses in CBD to suppress 2.6 dB of amplitude noise at MHz noise frequencies, to within 0.01 dB of the shot-noise limit.
Allen, Euan J., Azini, Maria, Ferranti, Giacomo, Francis-Jones, Robert J. A., Mahler, Dylan H., Matthews, Jonathan C. F., Mosley, Peter J., Ralph, Timothy C., Rusimova, Kristina R.   +8 more
core   +3 more sources

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source