Results 81 to 90 of about 993 (170)

SYNTHESIS OF DUAL RADIATION PATTERN OF RECTANGULAR PLANAR ARRAY ANTENNA USING EVOLUTIONARY ALGORITHM [PDF]

ICTACT Journal on Communication Technology, 2015
A pattern synthesis method based on Evolutionary Algorithm is presented to generate a dual radiation pattern from a planar array of isotropic antennas. The desired patterns are obtained by finding out optimum set of elements excitations.
Debasis Mandal, Ved Prakash Roy, Anirban Chatterjee, Anup Kumar Bhattacharjee   +3 more
doaj  

Mitigating Peak Sidelobe Levels in Pulse Compression Radar using Artificial Neural Networks

Indian Journal of Artificial Intelligence and Neural Networking
In this paper, Artificial Neural Networks (ANNs) are being considered to obtain low sidelobe pattern for binary codes and thereby to improve the performance of pulse compression radar. Pulse compression is a popular technique used for improving range resolution in the radar systems. This paper proposes a new approach for Pulse Compression using various
Raja Rajeswari Konduri, Nagireddi Roopavathi, Balantrapu Vijaya Lakshmi, Putrevu Venkata Krishna Chaitanya   +3 more
openaire   +1 more source

A Low-complexity Beampattern Shaping Method for Large-scale Rectangular Phased Arrays

Leida xuebao
To address the high computational complexity of beamforming in large-scale rectangular phased arrays, this paper proposes a low-complexity beampattern shaping method based on dimension decoupling, which markedly enhances design efficiency and beampattern
Wenqiang WEI, Xianxiang YU, Jinghui ZHU, Guolong CUI   +3 more
doaj   +1 more source

Analysis of the Influence of Fabrication Errors on the Far-Field Performance of Si and Si₃N₄ Antennas

Photonics
Antennas are important components in optical phased arrays. However, their far-field performance deteriorates when random phase noise is introduced because of fabricating errors.
Yifan Xin, Wenyuan Liao, Lei Yu, Pengfei Ma, Zheng Wang, Yibo Yang, Licheng Chen, Pengfei Wang, Yejin Zhang, Jiaoqing Pan   +9 more
doaj   +1 more source

Comparing the effect of aperture extension on the peak sidelobe level of sparse arrays

This thesis compares the Peak Sidelobe Levels (PSLs) of the beam patterns of filled and sparse arrays as a function of aperture both with numerical simulations and experimental data. Four array geometries are compared. A Uniform Linear Array (ULA) evenly spaces sensor elements to achieve low PSLs.
openaire   +1 more source

Single-Band-Notched Ultra-Wideband Low-Sidelobe Planar Array Antenna for Millimeter-Wave Applications. [PDF]

Micromachines (Basel)
Shen Y, Zhang T.
europepmc   +1 more source

A Fast and Efficient Method for Radiation Pattern Prediction in Large-Scale Tightly Coupled Linear Antenna Arrays. [PDF]

Sensors (Basel)
Wei J, Xu P, Lu H, Cai X.
europepmc   +1 more source

Three-dimensional passive acoustic mapping of high intensity focused ultrasound fields using sparse synthetic apertures from rotated one-dimensional linear arrays. [PDF]

Sci Rep
Kang G, Hwang JH.
europepmc   +1 more source

Mainlobe Interference Suppression Based on POL-SPICE and Covariance Matrix Reconstruction for Polarization-Sensitive Arrays. [PDF]

Sensors (Basel)
Xiao B, He H, Wang L, Zhou T.
europepmc   +1 more source

Robust Position-Only Null Steering in Linear Antenna Arrays via a Nature-Inspired Optimizer for Wireless Communication. [PDF]

Biomimetics (Basel)
Yildiz A, Akdagli A, Karaomerlioglu F, Yüksek G, Izci D, Tümen V, Ekinci S, Salman M, Al-Rabayah M.   +8 more
europepmc   +1 more source