Results 11 to 20 of about 216,951 (300)

Spatial power combiner using a planar active transmitarray of stacked patches

open access: yesJournal of Telecommunications and Information Technology, 2005
An X-band spatial power combiner, which uses a planar transmitarray (TXA) of orthogonally polarized stacked microstrip patches integrated with input and output ports of transistor amplifiers is described.
Feng-Chi E. Tsai, Marek E. Bialkowski
doaj   +1 more source

Logarithmic amplifiers [PDF]

open access: yesCytometry, 1990
AbstractLogarithmic amplifiers (log amps), which produce an output signal proportional to the logarithm of the input signal, are widely used in cytometry for measurements of parameters that vary over a wide dynamic range, e.g., cell surface immunofluorescence.
W, Gandler, H, Shapiro
openaire   +2 more sources

Performance of a MOPA laser system for photocathode research [PDF]

open access: yes, 1993
A Nd:YLF laser system with frequency doubled output is described. Several aspects concerning energy and stability of the pulses will be discussed. The system consists of a CW mode locked Nd:YLF oscillator and two double pass amplifiers having a total ...
Ernst, G.J., Mols, R.F.X.A.M.
core   +2 more sources

A Survey of Low Voltage and Low Power Amplifier Topologies

open access: yesJournal of Low Power Electronics and Applications, 2018
Reducing voltage supply is one of the most effective way to reduce the power consumption, but, on the other hand it is a challenging choice for the analog designers.
Anna Richelli   +9 more
doaj   +1 more source

Matched wideband low-noise amplifiers for radio astronomy [PDF]

open access: yes, 2009
Two packaged low noise amplifiers for the 0.3–4 GHz frequency range are described. The amplifiers can be operated at temperatures of 300–4 K and achieve noise temperatures in the 5 K range (
Bardin, J.   +3 more
core   +1 more source

Am I Way Wrong on this One? On the Multiple Semantic Sources and Paths of Development of the Amplifier Way in American English

open access: yesLexis: Journal in English Lexicology, 2020
This article explores the diachronic semantic development of the intensifier way in American English. It has been claimed in the literature that the intensifying function of way derives from the use of spatial adverbial (a)way, but I propose that this ...
Hélène Margerie
doaj   +1 more source

Insulting Rhetorical Questions – Mitigators or Amplifiers?

open access: yesRespectus Philologicus, 2022
The paper examines whether rhetorical questions (RQs) with insulting content or implications soften or intensify the insulting content that they express, as compared to corresponding direct statements with similar insulting content.
Džemal Špago
doaj   +1 more source

Coupling effects in array‐fed reflector antennas with digital beamforming

open access: yesIET Microwaves, Antennas & Propagation, 2021
Many modern microwave systems, for example, in the field of satellite communications, remote sensing for Earth observation or radio astronomy, employ reflector antennas with beam‐shaping capabilities.
Sigurd Huber   +3 more
doaj   +1 more source

N-Type Printed Organic Source-Gated Transistors with High Intrinsic Gain

open access: yesNanomaterials, 2022
Source-gated transistors (SGTs) are emerging devices enabling high-gain single-stage amplifiers with low complexity. To date, the p-type printed organic SGT (OSGT) has been developed and showed high gain and low power consumption.
Yudai Hemmi   +5 more
doaj   +1 more source

A correlation noise spectrometer for flicker noise measurement in graphene samples [PDF]

open access: yes, 2019
We present a high-resolution digital correlation spectrum analyzer for the measurement of low frequency resistance fluctuations in graphene samples. The system exploits the cross-correlation method to reject the amplifiers' noise.
Callegaro, Luca   +3 more
core   +3 more sources

Home - About - Disclaimer - Privacy