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Metal-Dielectric Nanocomposite Structures with Definite Optical Selective Properties
Allerton Press - Tập 65 - Trang 587-596 - 2023
Yurii Yakymenko, Oleksandr Machulianskyi, Bohdan Babych, Viktor Hetmanchuk
In this paper there are represented spectral-selective elements with definite optical characteristics on a basis of metal-dielectric composite structures. There is shown the possibility of controlling of the spectral selectivity of such structures due to modification of structural parameters of nanodimension components and accounting of their electromagnetic properties. The results of electronic m...... hiện toàn bộ
The efficiency of detecting an object moving in the unknown direction with unknown intensities of its image and background
Allerton Press - - 2009
A. P. Trifonov, R. V. Kutsov, E. V. Peteshchenkov
The maximum likelihood algorithm for detecting a space-extended object moving in the unknown direction has been synthesized and analyzed under conditions of a priori uncertainty with respect to intensities of its image and applicative background. The impact of a priori unknown intensities of the object image and the background on the detection characteristics was also investigated.
Spaced radio receive as a queueing system with mixed priorities
Allerton Press - Tập 53 - Trang 52-55 - 2010
V. K. Marigodov
It is considered a possibility of simulation of spaced radio receive with queueing system (QS) with mixed priorities. There are defined main parameters of QS for three priorities classes and comparative analysis of their efficiency is represented.
Stripline bandpass filters with alternating coupling coefficients
Allerton Press - Tập 60 - Trang 173-180 - 2017
A. V. Zakharov, M. Ye. Ilchenko, L. S. Pinchuk, Oleksandr Lysenko
This article shows the possibility in principle to design stripline comb filters with alternating signs of the coupling coefficients. The new feature of the stepped-impedance resonators of the quarterwave type was established. They provide the opposite sings of the electromagnetic coupling with adjacent resonators. Such resonators are asymmetric relative to the vertical axes, which is drawn throug...... hiện toàn bộ
Stripline antenna array for local information-telecommunication radio networks
Allerton Press - Tập 52 - Trang 445-448 - 2009
F. F. Dubrovka, S. E. Martynyuk
There are represented results of theoretical and experimental researches of stripline antenna array for local information-telecommunication radio networks of IEEE 802.11b, g and IEEE 802.16 standards, which use radio frequency band 2.3...2.7 GHz. Antenna array consists of 4 (2×2) irradiators, which are excited with help of non-symmetric strip line with air fulfillment. Irradiators are two-resonato...... hiện toàn bộ
Performance of Full Rate Non-Orthogonal STBC in Spatially Correlated MIMO Systems
Allerton Press - Tập 63 - Trang 88-95 - 2020
Sagar B. Patel, Jaymin Bhalani, Y. N. Trivedi
Spatial correlation is a crucial impairment for practical Multiple Input Multiple Output (MIMO) wireless communication systems. It is important to consider spatial correlation between antennas in actual communication scenario at both sides, i.e. transmit and receive side. Furthermore, we have considered nonorthogonal full rate STBC in MIMO systems equipped with four transmit antennas and four rece...... hiện toàn bộ
Scattering characteristics of non-linear loaded two-sided corner reflector
Allerton Press - Tập 52 - Trang 537-544 - 2009
T. A. Suanov, B. M. Petrov
Method of integral equations of sideband component of surface currents and physical optics method can be used for calculation of non-linear corner reflector. Efficient equivalent areas of backward scattering at frequencies of incident field and sideband frequencies are calculated.
Công nghệ vô tuyến điện tử trong điện tâm đồ siêu cao phân giải phục vụ chẩn đoán sớm các bệnh lý tim mạch Dịch bởi AI
Allerton Press - - 2014
K. V. Zaichenko
Nền tảng, đặc điểm và tính chất của phương pháp điện tâm đồ siêu cao phân giải (UHR ECG) và vị trí của nó trong số các phương pháp điện tâm đồ tiên tiến khác đã được mô tả. Các phương pháp và công nghệ vô tuyến điện tử sử dụng trong việc phát triển các thiết bị xử lý ban đầu tín hiệu điện tim (ECS) và các thuật toán xử lý thứ cấp của chúng bằng phương pháp UHR ECG đã được xem xét. Hơn nữa, kỹ thuậ...... hiện toàn bộ
#điện tâm đồ siêu cao phân giải #bệnh lý tim mạch #xử lý tín hiệu điện tim #công nghệ vô tuyến điện tử #bệnh tim thiếu máu cục bộ
Eigenmodes of sectoral coaxial ridged waveguides
Allerton Press - Tập 55 - Trang 239-247 - 2012
F. F. Dubrovka, S. I. Piltyay
The results of numerical investigation of sectoral coaxial ridged waveguides eigenmodes of two configurations (with a ridge on inner or outer wall) for different cross-section dimensions are presented. In particular, dependences of cutoff wave numbers on geometrical dimensions ratios for first four modes are investigated, electric field components distributions for these modes have been obtained a...... hiện toàn bộ
Calculation of U-shaped absorbing elements of chip-attenuators for surface mounting
Allerton Press - Tập 52 - Trang 569-571 - 2009
V. D. Sadkov, D. Yu. Yakimov
Atopology of absorbing elements of chip-attenuators of medium and large attenuations built on the basis of distributed resistive structures and intended for surface mounting is suggested and its calculation is performed. The results of calculations and experimental research on real samples of chip-attenuators and their large-scale models are provided.
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