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Content Provider | IET Digital Library |
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Author | Rodrigues, Eduardo Jorge Brito Lins, Hertz Wilton Castro D'assunção, Adaildo Gomes |
Abstract | The synthesis of a simple electronically reconfigurable annular ring monopole antenna using a designing optimisation process based on particle swarm optimisation (PSO) and artificial bee colony (ABC) algorithms is proposed. Several antenna dimensions are selected as objective functions of PSO and ABC and their best solutions are considered as the optimised dimensions of the antenna geometry. Two radio-frequency p–i–n diodes, connecting the antenna feeding line to two microstrip stubs are used to change the antenna frequency response from ultra-wideband (UWB), from 3.1 to 10.6 GHz, to narrowband (NB) operation about 5.8 GHz. The antenna design and simulation are performed using Ansoft high-frequency structure simulator software. PSO and ABC algorithms are written in Java language. Thereafter, antenna prototypes are fabricated and measured for validation purposes. Simulation and measurement results are obtained showing good agreement. The measured optimised impedance bandwidths of the UWB and NB bands are up to 128 and 23%, respectively. Additionally, simulated and measured radiation patterns are very similar when the reconfigurable antenna is operating in OFF-state (UWB sensing antenna) and in ON-state (NB transmitting antenna) modes, indicating the proposed antenna geometry as a promising candidate for applications such as UWB and cognitive radio. |
Starting Page | 362 |
Ending Page | 369 |
Page Count | 8 |
ISSN | 17518725 |
Volume Number | 10 |
e-ISSN | 17518733 |
Issue Number | Issue 4, Mar (2016) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-map/10/4 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-map.2015.0106 |
Journal | IET Microwaves, Antennas & Propagation |
Publisher Date | 2016-03-19 |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | ABC Algorithm ANSOFT High-frequency Structure Simulator Software Antenna Design Antenna Dimensions Antenna Feeding Line Antenna Geometry Antenna Prototypes Antenna Radiation Pattern Artificial Bee Colony Bioinspired Algorithm Cognitive Radio Electrical Engineering Computing Electronically Reconfigurable Annular Ring Monopole Antenna Synthesis Frequency Response Impedance Bandwidths Java Java Language Microstrip Stubs Monopole Antenna NB Transmitting Antenna Objective Function OFF-state Mode ON-state Mode Optimisation Technique Particle Swarm Optimisation PSO Algorithm Radiofrequency P-i-n Diode Single Antenna Ultra Wideband Antenna Ultrawideband Antenna UWb Sensing Antenna Validation Purposes |
Content Type | Text |
Resource Type | Article |
Subject | Electrical and Electronic Engineering |
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