scholarly journals A New Approach in the Simplification of a Multiple-Beam Forming Network Based on CORPS Using Compressive Arrays

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Armando Arce ◽  
Leonardo F. Yepes ◽  
David H. Covarrubias ◽  
Marco A. Panduro
Keyword(s):  
Antenna Arrays ◽  
Periodic Structures ◽  
Matrix Pencil ◽  
Antenna System ◽  
Beam Forming ◽  
New Approach ◽  
Linear Arrays ◽  
Beam Design ◽  
Matrix Pencil Method ◽  
Steerable Antenna

This research paper deals with a innovative way to simplify the design of beam-forming networks (BFNs) for multibeam steerable antenna arrays based on coherently radiating periodic structures (CORPS) technology using the noniterative matrix pencil method (MPM). This design approach is based on the application of the MPM to linear arrays fed by CORPS-BFN configurations to further reduce the complexity of the beam-forming network. Two 2-beam design configurations of CORPS-BFN for a steerable linear array are analyzed and compared using this compressive method. Simulation results show the effectiveness and advantages of applying the MPM on BFNs based on CORPS exploiting the nonuniformity of the antenna elements. Furthermore, final results show that the integration of CORPS-BFN and MPM reduces the entire antenna system including the antenna array and the beam-forming network subsystem resulting in a substantial simplification in such systems.

scholarly journals Design of Beam-Forming Networks for Multibeam Antenna Arrays Using Coherently Radiating Periodic Structures

2012 ◽  
Vol 10 (1) ◽  
Author(s):  
A. Arce ◽  
D.H. Covarrubias ◽  
M.A. Panduro ◽  
L.A. Garza
Keyword(s):  
Antenna Arrays ◽  
Linear Array ◽  
Periodic Structures ◽  
Pso Algorithm ◽  
Beam Forming ◽  
Sidelobe Level ◽  
Multibeam Antenna ◽  
Swarm Optimization ◽  
Beam Design ◽  
Steerable Antenna

The design of a beam-forming network (BFN) for a multibeam-steerable antenna array using Coherently RadiatingPeriodic Structures (CORPS) is presented. In this design, the input ports of the feeding network are optimized usingthe particle swarm optimization (PSO) algorithm. A two-beam design configuration of CORPS-BFN for a multibeamsteerablelinear array is proposed and analyzed. The results shown in this paper present certain interestingcharacteristics in the array factor response, in terms of sidelobe level (SLL) and directivity (D), for the scannablemultibeam linear array and the feeding network simplification for the design of BFN based on CORPS.

scholarly journals Locating Ships Using Time Reversal and Matrix Pencil Method by Their Underwater Acoustic Signals

Sensors ◽  
2021 ◽  
Vol 21 (15) ◽  
pp. 5065
Author(s):  
Daniel Chaparro-Arce ◽  
Sergio Gutierrez ◽  
Andres Gallego ◽  
Cesar Pedraza ◽  
Felix Vega ◽  
...  
Keyword(s):  
Time Reversal ◽  
Communication Channel ◽  
Matrix Pencil ◽  
Acoustic Signals ◽  
Underwater Acoustic ◽  
Low Bit Rate ◽  
Matrix Pencil Method ◽  
The Matrix ◽  
Resonance Expansion ◽  
Passive Sensors

This paper presents a technique, based on the matrix pencil method (MPM), for the compression of underwater acoustic signals produced by boat engines. The compressed signal, represented by its complex resonance expansion, is intended to be sent over a low-bit-rate wireless communication channel. We demonstrate that the method can provide data compression greater than 60%, ensuring a correlation greater than 93% between the reconstructed and the original signal, at a sampling frequency of 2.2 kHz. Once the signal was reconstituted, a localization process was carried out with the time reversal method (TR) using information from four different sensors in a simulation environment. This process sought to achieve the identification of the position of the ship using only passive sensors, considering two different sensor arrangements.

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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