Genetic algorithms and method of moments (GA/MoM): A novel integration for antenna design

2002 ◽  
Author(s):  
J.M. Johnson ◽  
Y. Rahmat-Samii
Keyword(s):  
Genetic Algorithms ◽  
Method Of Moments ◽  
Antenna Design

scholarly journals Genetic Algorithms in Antennas and Smart Antennas Design Overview: Two Novel Antenna Systems for Triband GNSS Applications and a Circular Switched Parasitic Array for WiMax Applications Developments with the Use of Genetic Algorithms

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Stylianos C. Panagiotou ◽  
Stelios C. A. Thomopoulos ◽  
Christos N. Capsalis
Keyword(s):  
Genetic Algorithms ◽  
Impedance Matching ◽  
Ground Plane ◽  
Smart Antennas ◽  
Antenna System ◽  
Antenna Design ◽  
Impedance Bandwidth ◽  
Parasitic Array ◽  
Extensive Reference ◽  
Antenna Systems

Genetic algorithms belong to a stochastic class of evolutionary techniques, whose robustness and global search of the solutions space have made them extremely popular among researchers. They have been successfully applied to electromagnetic optimization, including antenna design as well as smart antennas design. In this paper, extensive reference to literature related antenna design efforts employing genetic algorithms is taking place and subsequently, three novel antenna systems are designed in order to provide realistic implementations of a genetic algorithm. Two novel antenna systems are presented to cover the new GPS/Galileo band, namely, L5 (1176 MHz), together with the L1 GPS/Galileo and L2 GPS bands (1575 and 1227 MHz). The first system is a modified PIFA and the second one is a helical antenna above a ground plane. Both systems exhibit enhanced performance characteristics, such as sufficient front gain, input impedance matching, and increased front-to-back ratio. The last antenna system is a five-element switched parasitic array with a directional beam with sufficient beamwidth to a predetermined direction and an adequate impedance bandwidth which can be used as receiver for WiMax signals.

scholarly journals A Compact Inverted Y Slot Rectangular Microstrip Patch Antenna for Bluetooth Applications

2018 ◽  
Vol 11 (2) ◽  
pp. 413 ◽  
Author(s):  
Ramesh Kumar Verma ◽  
D K Srivastava
Keyword(s):  
Frequency Band ◽  
Method Of Moments ◽  
Microstrip Antenna ◽  
Microstrip Patch Antenna ◽  
Simulation Software ◽  
Antenna Design ◽  
Frequency Range ◽  
Microstrip Patch ◽  
Rectangular Microstrip Patch Antenna ◽  
Rectangular Microstrip Antenna

<p>In this paper a compact and slotted rectangular microstrip antenna is designed at 3.00GHz frequency and it is loaded by inverted Y slot so that the bandwidth of microstrip antenna is improved upto 36.30%. The area of radiating patch for 3.00GHz frequency is 711.36mm<sup>2</sup>.The proposed antenna design has frequency band in the frequency range 2.097GHz to 3.030GHz. The proposed antenna is resonating at 2.45GHz and area of radiating patch at this frequency is 1077.97mm<sup>2</sup>. Hence the size of antenna is reduced by 34% corresponding to resonance frequency 2.45GHz. This frequency band is suitable for Bluetooth and other wireless communication applications. The proposed slotted microstrip antenna is directly feed by 50Ω microstrip line feed. The proposed antenna is simulated by IE3D simulation software based on method of moments.<em></em></p>

scholarly journals A Novel Multiband Miniature Planar Inverted F Antenna Design for Bluetooth and WLAN Applications

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
J. M. Jeevani W. Jayasinghe ◽  
Disala Uduwawala
Keyword(s):  
Genetic Algorithm ◽  
Genetic Algorithms ◽  
Ground Plane ◽  
Antenna Design ◽  
Algorithm Optimization ◽  
Genetic Algorithm Optimization ◽  
Shorting Pin ◽  
5 Ghz ◽  
Patch Geometry ◽  
Compact Planar

A novel compact planar inverted F antenna (PIFA) optimized using genetic algorithms for 2.4 GHz (Bluetooth) and 5 GHz (UNII-1, UNII-2, UNII-2 extended, and UNII-3) bands is presented. The patch with a shorting pin is on a20×7×0.762 mm3substrate, which is suspended in air 5 mm above a30×7 mm2ground plane. Genetic algorithm optimization (GAO) is used to optimize the patch geometry, feed position, and shorting pin position simultaneously. Simulations are carried out by using HFSS and a prototype antenna is fabricated to compare the measurements with the simulations. The antenna shows fractional impedance bandwidths of 4% and 21% and gains of 2.5 dB and 3.2 dB at lower and upper bands, respectively.

scholarly journals Compact Multiband Planar Fractal Cantor Antenna for Wireless Applications: An Approach

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Gopalakrishnan Srivatsun ◽  
Sundaresan Subha Rani
Keyword(s):  
Method Of Moments ◽  
Fractal Geometry ◽  
Antenna Design ◽  
Prototype Model ◽  
Fractal Antenna ◽  
Ieee 802.11B ◽  
Wireless Applications ◽  
The One ◽  
New Criterion ◽  
Good Agreement

A compact multiband fractal antenna which is a new criterion in communication is proposed. The optimized prototype measures 35 mm×31 mm×1.6 mm. The proposed antenna covers WLAN IEEE 802.11b, 802.15, PCS, GSM lower and higher bands, DCS, IMT, UMTS, Wi-Fi, and WLAN wireless applications. The proposed antenna exhibits multiband characteristics with anS11of−30.69 dB at design frequency and it is found that~70% of theS11graph below−10 dB reference is achieved. ExperimentalS11has been compared with the one which is obtained using method of moments. The aim of implementing self-affine fractal concept in antenna design makes it flexible in controlling the resonance and bandwidth. This paper investigates self-affine fractal geometry to miniaturize and to resonate multiband frequencies. The prototype model with a good agreement ofS11is reported.

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