scholarly journals Метод компенсации пространственно-корреляционного поля естественных радиопомех в цифровых антенных решетках с нелинейным методом обработки сигналов

2020 ◽  
Author(s):  
A.N. Suchkov ◽  
I.M. Oroshuck ◽  
M.V. Soloviev ◽  
S.L. Melnik
Keyword(s):  
Antenna Array ◽  
Spatial Correlation ◽  
Antenna Arrays ◽  
Electronic Systems ◽  
Radio Interference ◽  
Nonlinear Signal Processing ◽  
Decameter Range ◽  
Correlation Field ◽  
Full Compensation ◽  
Nonlinear Signal

Целью работы является обоснование метода компенсации пространственно-корреляционного поля естественных радиопомех декамерового диапазона при проектировании конфигураций цифровых антенных решеток с нелинейным методом обработки сигналов. Направленные свойства и помехоустойчивость рассматриваемых антенных решеток для телекоммуникационных и радиолокационных радиоэлектронных систем в значительной степени зависят от сформированного у антенной решетки пространственно-корреляционного поля радиосигналов и радиопомех декаметрового диапазона, которое синтезируются для заданной частоты и полосы пропускания на основе детерминированной зависимости поля радиосигналов и стохастической имитационная модель синтеза радиопомех. С учетом реальных характеристик пространственно-корреляционного поля естественных радиопомех декаметрового диапазона предложен метод его полной компенсации, основанный на предложенном способе расположения элементов антенной решетки. Использование данного метода позволит повысить направленные свойства и помехоустойчивость цифровых антенных решеток с нелинейным методом обработки сигналов для телекоммуникационных и радиолокационных систем.The aim of the work is to substantiate the method of compensation of the spatial correlation field of natural radio interference of the decamer range in the design of configurations of digital antenna arrays with a nonlinear signal processing method. To properties and noise immunity of the considered antenna arrays for lecommunication and radar electronic systems largely depend on the formed antenna array spatial correlation fields of radio and radio decameter range are synthesized for a given frequency and a bandwidth based on determined based on field radiosignal-fishing and stochastic simulation model of the synthesis of interference. Taking into account the real characteristics of the spatial correlation field of natural radio interference of the decameter range, a method of its full compensation based on the proposed method of arrangement of the antenna array elements is proposed. Using this method.

scholarly journals Full snapshot reconstruction in hybrid architecture antenna arrays

2020 ◽  
Vol 2020 (1) ◽  
Author(s):  
Maria Trigka ◽  
Christos Mavrokefalidis ◽  
Kostas Berberidis
Keyword(s):  
Antenna Array ◽  
Antenna Arrays ◽  
Communication Systems ◽  
Linear Array ◽  
Research Work ◽  
Hybrid Architecture ◽  
Angle Of Arrival ◽  
Music Algorithm ◽  
Array Structures ◽  
Signal Sources

AbstractIn the context of this research work, we study the so-called problem of full snapshot reconstruction in hybrid antenna array structures that are utilized in mmWave communication systems. It enables the recovery of the snapshots that would have been obtained if a conventional (non-hybrid) uniform linear antenna array was employed. The problem is considered at the receiver side where the hybrid architecture exploits in a novel way the antenna elements of a uniform linear array. To this end, the recommended scheme is properly designed so as to be applicable to overlapping and non-overlapping architectures. Moreover, the full snapshot recoverability is addressed for two cases, namely for time-varying and constant signal sources. Simulation results are also presented to illustrate the consistency between the theoretically predicted behaviors and the simulated results, and the performance of the proposed scheme in terms angle-of-arrival estimation, when compared to the conventional MUSIC algorithm and a recently proposed hybrid version of MUSIC (H-MUSIC).

scholarly journals A Graphene-Assembled Film Based MIMO Antenna Array with High Isolation for 5G Wireless Communication

2021 ◽  
Vol 11 (5) ◽  
pp. 2382
Author(s):  
Rongguo Song ◽  
Xiaoxiao Chen ◽  
Shaoqiu Jiang ◽  
Zelong Hu ◽  
Tianye Liu ◽  
...  
Keyword(s):  
Antenna Array ◽  
Antenna Arrays ◽  
Multiple Input Multiple Output ◽  
Frequency Selective Surface ◽  
Antenna System ◽  
Antenna Element ◽  
Mimo Antenna ◽  
High Isolation ◽  
Input Multiple Output ◽  
Alternative Material

With the development of 5G, Internet of Things, and smart home technologies, miniaturized and compact multi-antenna systems and multiple-input multiple-output (MIMO) antenna arrays have attracted increasing attention. Reducing the coupling between antenna elements is essential to improving the performance of such MIMO antenna system. In this work, we proposed a graphene-assembled, as an alternative material rather than metal, film-based MIMO antenna array with high isolation for 5G application. The isolation of the antenna element is improved by a graphene assembly film (GAF) frequency selective surface and isolation strip. It is shown that the GAF antenna element operated at 3.5 GHz has the realized gain of 2.87 dBi. The addition of the decoupling structure improves the isolation of the MIMO antenna array to more than 10 dB and corrects the antenna radiation pattern and operating frequency. The isolation between antenna elements with an interval of 0.4λ is above 25 dB. All experimental results show that the GAF antenna and decoupling structure are efficient devices for 5G mobile communication.

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