Parallel genetic-algorithm optimization of a dual-band patch antenna for wireless communications

Mishra

Micro & Optical Tech Letters

2018

A compact dual wideband semi‐circular shape micro‐strip patch antenna is proposed for Ku/K band applications. The proposed antenna structure comprises of a modified T‐shape slot on the patch. Simulated and measured bandwidths of 2.12 GHz and 1.92 GHz at lower frequency bands (16.60‐18.72 GHz) and (16.78‐18.70 GHz) respectively are reported. We observe simulated and measured bandwidths of 0.77 GHz and 0.81 GHz at higher frequency bands (22.66‐23.43 GHz) and (22.56‐23.37 GHz), respectively. Ringing resonating frequencies are observed at lower operating band and are responsible for gain degradation.

Section: Introductionmentioning

confidence: 99%

Dual‐wideband semi‐circular patch antenna for Ku/K band applications

Mishra

Micro & Optical Tech Letters

2018

“…In 2002, A dual band patch antenna using parallel genetic -algorithm for wireless communication was reported by Villegas et al [45].…”

Section: Antennas Design Analysismentioning

confidence: 99%

Review: Dual Band Microstrip Antennas for Wireless Applications

Bajpai

Paulus

Singh³

et al. 2018

IJAAS

“…In the literature of topology optimization-based antenna design, the evolutionary structural optimization method has been extensively used, benefitting from the good extendibility of that method. For examples, dual-band antennas were optimized using the genetic algorithm, boolean particle swarm optimization algorithm or other gradient-independent methods ( Johnson and Rahmat-Samii, 1999;Li et al, 2002;Villegas et al, 2002;Afshinmanesh et al, 2008). These kinds of methods, owing not to use the gradient information, require extensive analysis for the large-scale problems, and the application of them is limited by their expensive computational cost (Sigmund, 2011).…”

Section: Introductionmentioning

confidence: 99%

Topology optimization-based design method of dual-band antennas

Wang¹,

Gao²,

Liu³

et al. 2017

MMMS

Purpose Recent development of wireless communication devices dictates that miniaturization, multi-functions and high integration are the important factors for antenna structures. This has resulted in the requirement of antennas with dual or multi-frequency operations. Although the dual-band antennas can be achieved through the experience-based configuration selection with the parameter adjustment, it is still a challenging problem to design an antenna with specific dual-frequency operations effectively. The purpose of the paper is to develop an effective design method to guide the design of antennas with specific dual-frequency operations. Design/methodology/approach The topology optimization is carried out through the material distribution approach, where the patch of the antenna is taken as the design domain. The optimization formulation is established with maximizing the minimum antenna efficiency at the target frequencies. The sensitivity of the antenna efficiency with the design variables is derived, and the optimization problem is solved by a gradient-based algorithm. Findings Based on the proposed design method, an example of a patch antenna design for specific dual-frequency operations is presented. The performance of the designed antenna is cross-verified by experimentation, where the reflection coefficients (S11) obtained by simulation and experiment show a good agreement. The simulation and the experimentation of the designed antenna show that two operational bands are optimized to occur around the target frequencies, which confirms the effectiveness of the proposed design method. Originality/value This paper presents a topology optimization-based design method for patch antennas operating at dual specific frequencies.