Results 1 to 10 of about 2,798 (196)

Physical-Based Simulation of the GaN-Based Grooved-Anode Planar Gunn Diode [PDF]

open access: yesMicromachines, 2020
In this paper, a novel gallium nitride (GaN)-based heterostructure Gunn diode is proposed for the first time to enhance the output characteristics of Gunn oscillation waveforms.
Ying Wang   +3 more
doaj   +3 more sources

The phase stability of nanosecond Gunn oscillators [PDF]

open access: yesVojnotehnički Glasnik, 2022
Introduction/purpose: Detailed theoretical and experimental studies have been carried out in order to investigate the problem of a phase stability in electrodynamically uncoupled Gunn oscillators.
Vasily Y. Kozhevnikov   +3 more
doaj   +1 more source

SIGNAL FORMATION AND PROCESSING FEATURES FROM AUTODYNE RADAR WITH A WIDE FREQUENCY MODULATION BAND Рart ІІ. Increasing the Resolution of Autodyne Radar by Quasi-Static Correction of the Probe Pulse [PDF]

open access: yesRadio Physics and Radio Astronomy, 2022
Subject and Purpose. Proceeding from a mathematical model of the electronically tunable autodyne oscillator (Part І of this paper), essential features of the signal formation / signal processing procedure are considered, as implementable in an autodyne ...
G. P. Ermak   +5 more
doaj   +1 more source

TERAHERTZ OSCILLATIONS IN InN GUNN DIODES WITH AN ACTIVE REGION LENGTH OF 1 μm AND WITH A GRADED GaInN LAYER [PDF]

open access: yesRadio Physics and Radio Astronomy, 2022
Subject and Purpose. The InN Gunn diode is known as the device capable of generating powerful oscillations atfrequencies above 300 GHz. A possible way for increasing both the microwave power and the cutoff frequency of the Gunn diode is to employ graded ...
I. P. Storozhenko, S. I. Sanin
doaj   +1 more source

Autodyne signal features of frequency-locked microwave oscillators [PDF]

open access: yesITM Web of Conferences, 2019
The research results on the autodyne signal formation in microwave oscillators, which are exposed under the impact of the proper reflected emission and, at the same time, of the external frequency-locked signal are presented.
Noskov Vladyslav Ya.   +2 more
doaj   +1 more source

Dynamic characteristics of frequency-locked autodynes [PDF]

open access: yesITM Web of Conferences, 2019
The results of research into the dynamic characteristics of microwave oscillators under the influence of both their own reflected radiation and external synchronising effect are presented.
Noskov Vladyslav Ya.   +2 more
doaj   +1 more source

SIGNAL FORMATION AND PROCESSING FEATURES FROM AUTODYNE RADAR WITH A WIDE FREQUENCY MODULATION BAND. (РART 1)

open access: yesRadio Physics and Radio Astronomy, 2022
Subject and Purpose. In Part 1 of the paper, a mathematical model of an autodyne self-oscillator with frequency tuning by varactor capacitance varying is built and thoroughly analyzed for the features of signal formation in autodyne radar with a wide ...
G. P. Ermak   +5 more
doaj   +1 more source

THE RESONANT SYSTEM OF A SUB-TERAHERTZ LOCAL OSCILLATOR

open access: yesRadio Physics and Radio Astronomy, 2022
Purpose. The excitation efficiency is investigated of the first higher-order axially asymmetric oscillation mode (TEM10q) excited in a hemispherical open resonator (OR) at the frequencies of the fundamental and second-order harmonics of the Gunn diode in
I. K. KUZMICHEV   +4 more
doaj   +1 more source

The Development of Planar Gunn Diodes for the realisation of MMIC Oscillators [PDF]

open access: yes1st Annual Active and Passive RF Devices Seminar, 2013
This review presents the development of planar Gunn diodes over the last few years for the implementation of millimetre-wave sources. The fabrication procedure incorporates electron beam lithography and the oscillation frequency is determined by the anode-to-cathode distance.
Papageorgiou, V.   +4 more
openaire   +1 more source

Optical control of semiconductor synchronized microwave oscillators in the power suppression mode

open access: yesJournal of Telecommunications and Information Technology, 2003
The influence of optical radiation on the performance of the synchronized microwave Gunn-diode oscillator in the coherent signals subtraction mode has been described theoretically and investigated experimentally.
Dmitri A. Usanov   +2 more
doaj   +1 more source

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