Results 21 to 30 of about 7,182,893 (348)

FORMATION OF THE DIRECTION DIAGRAM IN PHASED ANTENNA ARRAY

open access: yesРоссийский технологический журнал, 2019
The article presents the results of the study of phase and temporal methods in the formation of the direction diagram of phased antenna array, and carries out a comparative analysis using an eight-element equidistant antenna array based on Vivaldi ...
N. M. Legkiy, I. V. Unchenko
doaj   +1 more source

Methods of precise determining the transfer function of picosecond time-to-digital converters [PDF]

open access: yesMetrology and Measurement Systems, 2021
We present two main ways to precisely create the equivalent transfer function of picosecond time-to-digital converters based on commonly used method with tapped time coding delay lines.
Dominik Sondej   +2 more
doaj   +1 more source

Wave Analogs of Media Based on Phase Locked Loops

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2020
Introduction. At present, phase locked loops (PLLs) are widely used: from optimal signal detection and frequency synthesis to automatic control of phase distribution in phased scanned arrays.
L. A. Tsyrulnikova   +2 more
doaj   +1 more source

The retunable SHF-range signal delay line based on ferroelectrics and diamond films [PDF]

open access: yesTekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2010
The article describes the principles of creation of a broadband miniature SHF-range signal delay line based on ferroelectrics and diamond films. The parameters of obtained ferroelectrics and diamond films have been given. The possible design of the delay
Afanasyev M. S.   +2 more
doaj   +2 more sources

Few-Mode Fibers With Uniform Differential Mode Group Delay for Microwave Photonic Signal Processing

open access: yesIEEE Access, 2020
We present a novel design of few-mode fiber (FMF) with a uniform differential mode group delay (U-DMGD) among propagating modes and apply the FMF to a single-fiber delay line module for implementing microwave photonic finite impulse response (FIR ...
Jian Zhao   +5 more
doaj   +1 more source

Features of the Formation of Sensitive Films Based on Mycelium of Higher Fungi for Surface and Plate Acoustic Waves Gas Sensors

open access: yesSensors, 2023
A comparative analysis of the responses of two types of acoustic waves (surface SAW and plate APW) with close frequencies and the same type of waves (SAW) with different frequencies toward various liquid vapors (water, acetone, ethanol) was carried out ...
Andrey Smirnov   +9 more
doaj   +1 more source

Traveling mirror compressor delay line with nonconstant capacitance [PDF]

open access: yes, 1981
The scaling relations for a traveling mirror magnetic compressor [P.M. Bellan, Phys. Rev. Lett. 43, 858 (1979)] having nonconstant capacitance are derived.
Bellan, P. M.
core   +1 more source

Sampled true time delay line operation by inscription of long period gratings in few-mode fibers.

open access: yesOptics Express, 2019
We propose and experimentally demonstrate distributed microwave photonics signal processing over a few-mode fiber link by implementing 4-sample true time delay line operation.
S. García   +5 more
semanticscholar   +1 more source

The Mass of the Black Hole in the Seyfert 1 Galaxy NGC 4593 from Reverberation Mapping [PDF]

open access: yes, 2006
We present new observations leading to an improved black hole mass estimate for the Seyfert 1 galaxy NGC 4593 as part of a reverberation-mapping campaign conducted at the MDM Observatory. Cross-correlation analysis of the H_beta emission-line light curve
Berezin V. Y.   +21 more
core   +5 more sources

Ring-core few-mode fiber for tunable true time delay line operation.

open access: yesOptics Express, 2019
We propose, for the first time to our knowledge, tunable true time delay line operation for radiofrequency signals on a few-mode fiber link. In particular, the custom design of a 7-LP-mode ring-core few-mode fiber together with a set of 5 broadband long ...
S. García, Rubén Guillem, I. Gasulla
semanticscholar   +1 more source

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