Design of Reconfigurable Array Antennas With Minimum Variation of Active Impedances
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Design of Reconfigurable Array Antennas With Minimum Variation of Active ImpedancesData
2006-12Cita bibliográfica
G. K. Mahanti; S. Das ; A. Chakrabarty ; J. C. Bregains ; F. Ares "Design of Reconfigurable Array Antennas With Minimum Variation of Active Impedances", IEEE Antennas and Wireless Propagation Letters , 541 - 544 Volume: 5, Issue: 1, Dec. 2006
Resumo
[Abstract] In this letter, the authors propose an optimization method based on the genetic algorithm (GA) to reconfigure a linear array of vertical half-wavelength dipole antennas to generate two patterns with minimum active impedance variation when the antenna switches from one pattern to other in the presence or absence of a ground plane behind the array. The problem is to find a fixed voltage amplitude distribution that generates two broadside symmetrical beams in the horizontal plane: a pencil beam with zero phases and a flat-top beam with phases in the range from -180deg to +180deg. Mutual coupling effect is taken into account via open circuit mutual impedance matrix
Palabras chave
Dipole antenna arrays
Genetic algorithms
Impedance matrix
Linear antenna arrays
Genetic algorithms
Impedance matrix
Linear antenna arrays
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ISSN
1536-1225