Results 51 to 60 of about 10,565,311 (162)

Genetic Algorithm (GA) Approach for Side Lobe Level-Reduction (SLL-R) and Enhanced Directivity in Wireless Communication

The present investigation investigates the optimization of smart antenna systems, specifically the reduction of side lobe levels (SLL) using Genetic Algorithm (GA) techniques. The study assesses the radiation pattern performance of a ten-element antenna array with fixed 8 cm spacing and 2 amps of current. Variations in the number of elements (4, 6, and
Namdeo, Shravan Kumar, Patidar, Mukesh, Shreyaskumar Patel, Shreyaskumar, Jain, Ankit, Mandloi, Devendra S., Paranjpe, Pranav, Nagar, Sneha   +6 more
openaire   +1 more source

A Broadband Low Sidelobe Waveguide Slot Monopulse Antenna Array With Reduced Structural Complexity

Electronics Letters, Volume 62, Issue 1, January/December 2026.
This paper presents a Ka‐band waveguide slot monopulse antenna array featuring broadband, low sidelobe level (SLL) and reduced structural complexity, with unequal‐power 2×$\times$2 subarray and folded unequal‐power full‐corporate feeding network. The proposed architecture provides a compact and high‐performance solution for millimetre‐wave monopulse ...
Zhenzuo Chen, Yang You, Di Cheng, Lingguo Min, Yunlong Lu, Yi Wang   +5 more
wiley   +1 more source

Series‐Fed Higher Order Mode Planar Dipole Antenna Arrays for High‐Gain Applications

Electronics Letters, Volume 62, Issue 1, January/December 2026.
This letter presents a compact, high‐gain series‐fed planar dipole antenna array based on third resonant mode excitation for endfire radiation. A dual current‐control mechanism using bent stubs and meander lines improves gain and suppresses sidelobes.
Muhammad Zaka Ali, Mourad Nedil
wiley   +1 more source

A bi-dimensional compressed Luneburg lens antenna for miniaturization based on transformation optics

Frontiers in Physics, 2022
Transformed Luneburg lens has been widely employed to provide aberration-free imaging and high-gain antenna system, but whose focal plane and beam scanning range decrease correspondingly. In this paper, a two-dimensional compressed elliptical cylindrical
Yadan Zang, Yongzhong Zhu, Wenxuan Xie, Yufei Yang, Lijun Bu, Xiaoyu Liu   +5 more
doaj   +1 more source

A Feasibility Study to Practically Implement a High‐Performance Circularly Polarised Antenna Array for Point‐to‐Point Wireless Communication

IET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.
This research introduced a novel high‐gain low‐profile 4 × 4 microstrip patch array antenna with dual circular polarisation (CP) capabilities. The key innovation lies in the integration of two compact and symmetrical 1‐to‐4 microstrip power divider networks, enabling the antenna to operate in either left‐hand circular polarisation (LHCP) or right‐hand ...
Mahdi Parvaneh, Hassan Zakeri, Gholamreza Moradi, Mohammad Alibakhshikenari, Bandar Alshammari, Chan Hwang See, Bal Virdee, Symon K. Podilchak, Ernesto Limiti   +8 more
wiley   +1 more source

Amplitude Tapered Leaky‐Wave Antennas in Bent Additively Manufactured Nonradiative Dielectric Waveguides

IET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.
We introduce a simple approach to taper the amplitude distribution in leaky‐wave antennas by exploiting a nonradiative dielectric waveguide topology. By shaping the dielectric section, the longitudinal attenuation constant and therefore the amplitude distribution can be easily controlled to lower side lobe levels.
Kevin Kipruto Mutai, Qiang Chen
wiley   +1 more source

Apodization Optimization of FBG Strain Sensor for Quasi-Distributed Sensing Measurement Applications

Active and Passive Electronic Components, 2016
A novel optimized apodization of Fiber Bragg Grating Sensor (FBGS) for quasi-distributed strain sensing applications is developed and introduced in this paper.
Fahd Chaoui, Otman Aghzout, Mounia Chakkour, Mounir El Yakhloufi   +3 more
doaj   +1 more source

Design of a High‐Gain H‐Shaped 1‐Bit Linearly Polarised Reconfigurable Intelligent Surface for Single and Multibeam Scanning

IET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.
This study introduces a compact H‐shaped 1‐bit linearly polarised Reconfigurable Intelligent Surface (RIS) prototype, specifically engineered for high‐gain and beam‐scanning applications at 5.1 GHz. The fabricated 20 × 20 RIS array exhibited a gain of 23.1 dBi, a scanning capability of ± 60° and an aperture efficiency of approximately 57%, as validated
Rocky Chakma, Jie Tang, Zijun Yan, Yongan Feng, Guohao Chen   +4 more
wiley   +1 more source

Achieving Full Grating-Lobe-Free Field-of-View with Low-Complexity Co-prime Photonic Beamforming Transceivers

, 2021
Integrated photonic active beamforming can significantly reduce the size and cost of coherent imagers for LiDAR and medical imaging applications. In current architectures, the complexity of photonic and electronic circuitry linearly increases with the ...
Reza Fatemi (5784956), Ali Hajimiri (5784965), Aroutin Khachaturian (5784962)   +2 more
core   +1 more source

Conformal Array Pattern Synthesis Using a Hybrid WARP/2LB-MOPSO Algorithm

International Journal of Antennas and Propagation, 2012
This paper addresses conformal array synthesis as a constrained multiobjective optimization problem. Simultaneous reduction of side lobe level (SLL) and cross-polarization (XPL) level is aimed with a constraint on main beam direction.
Roghieh Karimzadeh Baee, Keyvan Forooraghi, Somayyeh Chamaani   +2 more
doaj   +1 more source