Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Conservation of Angular Momentum: Application01:18

Conservation of Angular Momentum: Application

10.9K
A system's total angular momentum remains constant if the net external torque acting on the system is zero. Examples of such systems include a freely spinning bicycle tire that slows over time due to torque arising from friction, or the slowing of Earth's rotation over millions of years due to frictional forces exerted on tidal deformations. However in the absence of a net external torque, the angular momentum remains conserved. The conservation of angular momentum principle requires a...
10.9K
Linear time-invariant Systems01:23

Linear time-invariant Systems

245
A system is linear if it displays the characteristics of homogeneity and additivity, together termed the superposition property. This principle is fundamental in all linear systems. Linear time-invariant (LTI) systems include systems with linear elements and constant parameters.
The input-output behavior of an LTI system can be fully defined by its response to an impulsive excitation at its input. Once this impulse response is known, the system's reaction to any other input can be...
245
Pole and System Stability01:24

Pole and System Stability

275
The transfer function is a fundamental concept representing the ratio of two polynomials. The numerator and denominator encapsulate the system's dynamics. The zeros and poles of this transfer function are critical in determining the system's behavior and stability.
Simple poles are unique roots of the denominator polynomial. Each simple pole corresponds to a distinct solution to the system's characteristic equation, typically resulting in exponential decay terms in the system's...
275
Conservation of Angular Momentum01:09

Conservation of Angular Momentum

10.2K
A system's total angular momentum remains constant if the net external torque acting on the system is zero. Considering a system that consists of n tiny particles, the angular momentum of any tiny particle may change, but the system's total angular momentum would remain constant. The principle of conservation of angular momentum only considers the net external torque acting on the system. While there are internal forces exerted by different particles within the system that also produce...
10.2K
Distributed Loads: Problem Solving01:21

Distributed Loads: Problem Solving

639
Beams are structural elements commonly employed in engineering applications requiring different load-carrying capacities. The first step in analyzing a beam under a distributed load is to simplify the problem by dividing the load into smaller regions, which allows one to consider each region separately and calculate the magnitude of the equivalent resultant load acting on each portion of the beam. The magnitude of the equivalent resultant load for each region can be determined by calculating...
639
Ampere-Maxwell's Law: Problem-Solving01:17

Ampere-Maxwell's Law: Problem-Solving

613
A parallel-plate capacitor with capacitance C, whose plates have area A and separation distance d, is connected to a resistor R and a battery of voltage V. The current starts to flow at t = 0. What is the displacement current between the capacitor plates at time t? From the properties of the capacitor, what is the corresponding real current?
To solve the problem, we can use the equations from the analysis of an RC circuit and Maxwell's version of Ampère's law.
For the first part of...
613

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Lanthanum-modulated hollow CuO nanofibers enable selective CO<sub>2</sub> electroreduction to multicarbon products at high current densities.

Journal of colloid and interface science·2026
Same author

Quaternary Ammonium Additives Enable Efficient and Stable 1.77 eV Wide-Bandgap Perovskite Solar Cells.

Chemistry, an Asian journal·2026
Same author

A guardian role of TagA in protecting <i>Mycobacterium tuberculosis</i> from nitrosative killing.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

RNA acetylation modification ac4C: An emerging regulatory hub of RNA metabolism disruption in Alzheimer's disease.

Molecular biology reports·2026
Same author

LingXi SDGs large models: a practical platform of AI for SDGs science.

Science bulletin·2026
Same author

Functional Nitrile Ether Additives for High-Energy-Density Lithium Metal Batteries: Multiscale Mechanism Study on Cyanide Substitution Regulation.

The journal of physical chemistry. B·2026

Related Experiment Video

Updated: Jun 21, 2025

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface
06:14

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Published on: July 30, 2020

4.9K

A Wild Horse Optimization algorithm with chaotic inertia weights and its application in linear antenna array

WanRu Zhao1, Yan Liu1, JianHui Li1

  • 1School of Physics and Electronic Information, Yunnan Normal University, Kunming, Yunnan Province, China.

Plos One
|July 5, 2024
PubMed
Summary

This study introduces a novel chaotic inertia-weighted Wild Horse optimization (IERWHO) algorithm to reduce sidelobe levels in linear antenna arrays. The IERWHO algorithm effectively optimizes antenna parameters for improved radiation patterns.

More Related Videos

Spatial Multiobjective Optimization of Agricultural Conservation Practices using a SWAT Model and an Evolutionary Algorithm
11:53

Spatial Multiobjective Optimization of Agricultural Conservation Practices using a SWAT Model and an Evolutionary Algorithm

Published on: December 9, 2012

12.9K
SwarmSight: Real-time Tracking of Insect Antenna Movements and Proboscis Extension Reflex Using a Common Preparation and Conventional Hardware
08:13

SwarmSight: Real-time Tracking of Insect Antenna Movements and Proboscis Extension Reflex Using a Common Preparation and Conventional Hardware

Published on: December 25, 2017

8.2K

Related Experiment Videos

Last Updated: Jun 21, 2025

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface
06:14

Simulating Imaging of Large Scale Radio Arrays on the Lunar Surface

Published on: July 30, 2020

4.9K
Spatial Multiobjective Optimization of Agricultural Conservation Practices using a SWAT Model and an Evolutionary Algorithm
11:53

Spatial Multiobjective Optimization of Agricultural Conservation Practices using a SWAT Model and an Evolutionary Algorithm

Published on: December 9, 2012

12.9K
SwarmSight: Real-time Tracking of Insect Antenna Movements and Proboscis Extension Reflex Using a Common Preparation and Conventional Hardware
08:13

SwarmSight: Real-time Tracking of Insect Antenna Movements and Proboscis Extension Reflex Using a Common Preparation and Conventional Hardware

Published on: December 25, 2017

8.2K

Area of Science:

  • Electrical Engineering
  • Computer Science
  • Optimization Algorithms

Background:

  • Antennas are vital for communication systems, but reducing sidelobe levels (SLL) in antenna arrays is a significant challenge.
  • Smart antenna pattern synthesis is crucial for radar and communication systems, driving research into efficient optimization techniques.

Purpose of the Study:

  • To present an effective technique for minimizing the maximum sidelobe level (SLL) in linear antenna arrays (LAA).
  • To improve the radiation pattern of antenna arrays using a novel optimization algorithm.

Main Methods:

  • The chaotic inertia-weighted Wild Horse optimization (IERWHO) algorithm was developed by enhancing the Wild Horse Optimizer (WHO) with chaotic sequences, nonlinear factors, and inertia weights.
  • The IERWHO algorithm was applied to antenna array synthesis for the first time, optimizing inter-element spacing and excitation.
  • Performance was evaluated using 12 benchmark test functions and 12 additional test functions.

Main Results:

  • The IERWHO algorithm demonstrated effectiveness in minimizing SLL for linear antenna arrays.
  • Optimization of inter-element spacing and excitation parameters successfully improved radiation patterns.
  • Simulation results validated the algorithm's performance and improvement strategies.

Conclusions:

  • The proposed IERWHO algorithm is an effective method for antenna array synthesis.
  • This optimization technique successfully minimizes SLL while adhering to constraints.
  • The IERWHO algorithm shows promise for applications in antenna optimization and broader optimization fields.