Results 11 to 20 of about 112,460 (239)

Headache: Relief is possible

open access: yesSouth African Family Practice, 1995
No abstract available.
lna Diener
doaj   +1 more source

A high linearity LNA for low voltage GPS receiver

open access: yesDianzi Jishu Yingyong, 2020
Based on 0.18 μm RFCMOS technology, a high linearity low noise amplifier(LNA) for low voltage GPS receivers was designed. By using the trans-conductance derivative superposition technique with bulk bias control, the adjustment accuracy of auxiliary ...
Chen Li, Liu Yanyan
doaj   +1 more source

In Vivo Imaging With a Low-Cost MRI Scanner and Cloud Data Processing in Low-Resource Settings. [PDF]

open access: yesNMR Biomed
This study presented the system evolution at MUST: (a) Scanner after the initial assembly in 2023. (b) First reconstructed image (bell pepper). Front (c), rear (d), and global (e) views of the MUST scanner in the 2025 configuration, highlighting the improved electronics setup, RF coils, and mechanical integration.
Guallart-Naval T   +18 more
europepmc   +2 more sources

Design of X-Band GaN LNA MMIC with Switched Impedance Network for Improved Noise Figure [PDF]

open access: yesJournal of Electromagnetic Engineering and Science
In this work, an X-band gallium nitride (GaN) low-noise amplifier (LNA) monolithic microwave integrated circuit (MMIC) with a switched impedance network for improved noise performance is designed and fabricated using a 0.25 μm GaN WIN-semiconductor ...
Byeong-Uk Lee
doaj   +1 more source

A tunable X-band SiGe HBT single stage cascode LNA [PDF]

open access: yes, 2010
This paper presents an X-band silicon-germanium (SiGe) single stage cascode tunable low-noise amplifier (LNA) for active phased array transmit/receive modules.
Doğan, Mustafa, Tekin, İbrahim
core   +1 more source

W‐Band MMIC chipset in 0.1‐μm mHEMT technology

open access: yesETRI Journal, 2020
We developed a 0.1‐μm metamorphic high electron mobility transistor and fabricated a W‐band monolithic microwave integrated circuit chipset with our in‐house technology to verify the performance and usability of the developed technology.
Jong‐Min Lee   +11 more
doaj   +1 more source

Spatiotemporal dynamics of high and low nucleic acid-content bacterial communities in Chinese coastal seawater: assembly process, co-occurrence relationship and the ecological functions

open access: yesFrontiers in Microbiology, 2023
Studies of high nucleic acid-content (HNA) and low nucleic acid-content (LNA) bacterial communities are updating our view of their distributions and taxonomic composition.
Wei Hu   +4 more
doaj   +1 more source

A wideband noise-canceling CMOS LNA exploiting a transformer [PDF]

open access: yes, 2006
A broadband LNA incorporating single-ended to differential conversion, has been successfully implemented using a noise-canceling technique and a single on-chip transformer. The LNA achieves a high voltage gain of 19dB, a wideband input match (2.5-4.0 GHz)
Blaakmeer, Stephan C.   +3 more
core   +5 more sources

The optimal design of an LNA by using of CAD tool based on the modified inclined planes system optimization [PDF]

open access: yesمدیریت مهندسی و رایانش نرم, 2023
Low Noise Amplifier (LNA) is the first critical and important element in the designing of analog VLSI systems and wireless communications technology.
Najmeh Shahraki, Ali Mohammadi
doaj  

Rigorous elimination of fast stochastic variables from the linear noise approximation using projection operators [PDF]

open access: yes, 2012
The linear noise approximation (LNA) offers a simple means by which one can study intrinsic noise in monostable biochemical networks. Using simple physical arguments, we have recently introduced the slow-scale LNA (ssLNA) which is a reduced version of ...
A. N. Tikhonov   +9 more
core   +2 more sources

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