An Efficient Approach for Optimizing Frequency Reconfigurable Pixel Antennas Using Genetic Algorithms

In this paper we describe a method for optimizing frequency reconfigurable pixel antennas. The method utilizes a multi-objective function that is efficiently computed by using only one full electromagnetic simulation in the entire genetic algorithm optimization process. Minimization of the number of...

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Vydáno v:IEEE transactions on antennas and propagation Ročník 62; číslo 2; s. 609 - 620
Hlavní autoři: Sichao Song, Murch, Ross D.
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York, NY IEEE 01.02.2014
Institute of Electrical and Electronics Engineers
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Témata:
Algorithms
Antennas
Applied classical electromagnetism
Applied sciences
Bands
Biological cells
Computer simulation
Electromagnetic wave propagation, radiowave propagation
Electromagnetism; electron and ion optics
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Genetic algorithms
Ground plane
internal multi-port method
Optimization
Physics
pixel antennas
Pixels
Ports (Computers)
Radiocommunications
reconfigurable antennas
Sociology
Statistics
Switches
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Transmission and modulation (techniques and equipments)
Vectors
Performance evaluation
Multiple access
Electromagnetism
reconfigurable antennas
Multiobjective programming
Micromachine
Optimization
pixel antennas
Genetic algorithms
internal multi-port method
Simulation
Genetic algorithm
Multifrequency antenna
Reconfigurable architectures
Objective function
Microelectromechanical device
ISSN:0018-926X, 1558-2221
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Popis
Shrnutí:In this paper we describe a method for optimizing frequency reconfigurable pixel antennas. The method utilizes a multi-objective function that is efficiently computed by using only one full electromagnetic simulation in the entire genetic algorithm optimization process. Minimization of the number of switches in the design is also attempted. The method is demonstrated using an antenna structure consisting of a rectangular grid of pixels adjacent to a ground plane and using RF MEMS switches for achieving the reconfigurability. The effects of the RF MEMS switches on the antenna performance as well as the control feed lines for them are also addressed. We provide both simulation and experimental results for a reconfigurable dual-band antenna that reconfigures the bands 820-1140 and 1720-1900 MHz to the bands 860-1160 and 1890-2300 MHz with dimensions of 39 mm × 24 mm on a ground plane of 40 mm × 65 mm with one switch only. The results demonstrate that reconfigurable antennas can be designed effectively with a minimum number of switches using an efficient optimization method.
Bibliografie:ObjectType-Article-1
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ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2013.2293509