Results 41 to 50 of about 206 (155)

LOCAL OSCILLATORS FOR MM-WAVELENGTH AERONOMIC RECEIVERS

Radio Physics and Radio Astronomy, 2019
Purpose: A description of the original technical solutions of the solid-state highly stable local oscillators of the millimeter range and the results of the study of the main characteristics of the developed devices are given. The goal of the work is the
V. V. Myshenko, V. M. Shulga, A. M. Korolev, Yu. V. Karelin, D. L. Chechotkin, O. V. Antyufeyev, O. M. Patoka   +6 more
doaj   +1 more source

Thermal Modeling of the GaN-based Gunn Diode at Terahertz Frequencies

Applied Sciences, 2018
In this paper, a comprehensive evaluation of thermal behavior of the GaN vertical n+-n−-n-n+ Gunn diode have been carried out through simulation method.
Ying Wang, Jinping Ao, Shibin Liu, Yue Hao   +3 more
doaj   +1 more source

Anomalous low-frequency noise increase at the onset of oscillations in Gunn diodes [PDF]

2015 10th Spanish Conference on Electron Devices (CDE), 2015
In this work, the presence of anomalous lowfrequency noise effects in Gunn diodes has been studied and evidenced. Near the onset of Gunn instability, there is a limited range of bias voltages for which the noise significantly increases at frequencies well below the frequency of oscillation.
García Pérez, Óscar Alberto, Íñiguez-de-la-Torre, Ignacio, Pérez Santos, María Susana, Mateos López, Javier, González Sánchez, Tomás, Alimi, Yasaman, Song, Aimin M.   +6 more
openaire   +3 more sources

Gunn-diode oscillator at 95 GHz

Electronics Letters, 1975
The results of Gunn-diode-oscillator development at 90 to 94 GHz are reported, along with a discussion of the devices and circuit used. The best performance obtained was 25 mW output power (at 30°C heatsink temperature) with a d.c.-to-r.f. conversion efficiency of 0.6% at an operating frequency of 93.7 GHz.
openaire   +1 more source

Planar gunn diode characterisation and resonator elements to realise oscillator circuits [PDF]

International Conference on Advanced Nanomaterials & Emerging Engineering Technologies, 2013
The paper describes the planar Gunn diode, which is well suited to providing milli-metric and tera hertz sources using microwave monolithic integrated circuit (MMIC) technologies. Different planar Gunn electrode geometries are described along with DC, RF and thermal characterisation. To realize the planar high frequency sources there is requirement for
Ismaeel Maricar, M, Glover, J., Evans, G.A., Khalid, A., Papageorgiou, V., Li, C., Dunn, G., Stephens, A., Montes Bajo, M., Kuball, M., Cumming, D.R.S., Oxley, C.H.   +11 more
openaire   +1 more source

Frequency Deviation of Injection-Locked Microwave Autodynes [PDF]

Radioengineering, 2019
This article presents the results of the autodyne (AD) frequency deviation research, which is simultaneously affected by its own reflected radiation and the external synchronisation signal. The basic correlations are obtained for the injection-locked AD (
V. Ya. Noskov, K. A. Ignatkov, K. D. Shaidurov   +2 more
doaj  

Exploring Double NDR Modulation and UV‐NIR Photodetection in MoS2/Sb2Se3 Heterostructures

Advanced Optical Materials, Volume 13, Issue 32, November 14, 2025.
In this study, a van der Waals Sb2Se3/MoS2 heterostructure exhibits dual negative differential resistance (NDR) peaks at room temperature. The first originates from band‐to‐band tunneling, while the second, triggered under laser illumination, is attributed to trap states and recombination dynamics.
Muhammad Suleman, Minwook Kim, Arslan Rehmat, Ehsan Elahi, Muhammad Asim, Muhammad Riaz, Sunil Kumar, Jongwan Jung, Yongho Seo   +8 more
wiley   +1 more source

Gunn diode oscillator constructed in nonradiative dielectric waveguide

Electronics Letters, 1987
The physical construction of a Gunn diode oscillator in non-radiative dielectric waveguide is described. A stripline construction is used for biasing, and the diode is mounted so as to feed a slot which in turn launches the wave into the wave-guide.
J.A.G. Malherbe, M.C. Wijnbeek
openaire   +1 more source

Self‐Sustained Artificial Internet of Things Based on Vibration Energy Harvesting Technology: Toward the Future Eco‐Society

Advanced Energy and Sustainability Research, Volume 5, Issue 11, November 2024.
Clean energy is central to global energy developments, driven by sustainability needs and advancements in 5G and Internet of Things (IoT). Vibration energy harvesting, converting vibrational energy into electricity, supports IoT expansions and integrates with AI‐enhanced sensors for improved environmental monitoring, intelligent transportation, and ...
Yunfei Li, Zhongda Sun, Manjuan Huang, Lining Sun, Huicong Liu, Chengkuo Lee   +5 more
wiley   +1 more source

Brightly Luminescent and Color‐Tunable CsPbBr3 Nanocrystals with Enhanced Stability and Room Temperature Cubic Structure through Codoping with MnCl2

Advanced Engineering Materials, Volume 26, Issue 18, September 2024.
Lead halide perovskites have recently attracted much attention . Nevertheless, their stability and lead toxicity have remained a problem. Herein, the potential of manganese doping to offer better stability and replace a fraction of the toxic lead ions is investigated.
Elshaimaa Darwish, Jack Elia, Dominik Fehn, David Köllner, Amir Pourjafar, Silke Christiansen, Karsten Meyer, Kyle Grant Webber, Christoph J. Brabec, Miroslaw Batentschuk, Andres Osvet   +10 more
wiley   +1 more source