Radiation pattern synthesis for arrays of conformal antennas mounted on arbitrarily-shaped three-dimensional platforms using genetic algorithms

被引:85
作者
Allard, RJ [1 ]
Werner, DH
Werner, PL
机构
[1] Penn State Univ, Appl Res Lab, State Coll, PA 16804 USA
[2] Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA
关键词
antenna arrays; conformal antennas; genetic algorithms (GAs);
D O I
10.1109/TAP.2003.811510
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 [电气工程]; 0809 [电子科学与技术];
摘要
A domain-decomposition/reciprocity procedure is presented which allows the radiation patterns of microstrip patch antennas mounted on arbitrarily-shaped three-dimensional perfectly electric conducting (PEC) platforms to be computed accurately as well as efficiently. The utility of this technique is demonstrated by considering an example consisting of a nine-element conformal array of microstrip patch antennas mounted axially along a finite-length PEC circular cylinder. It is shown that the elements close to the ends of the cylinder have significantly different patterns than those close to the center of the cylinder. The results from this example suggest that the common practice where all the individual element patterns are assumed identical is not always valid and, in fact, can lead to significant performance degradation in the design of conformal phased arrays. This observation is supported by the fact that an attempt to steer the main beam of the nine-element conformal array to an angle theta(0) = 60degrees using a standard uniform progressive phase shifting technique proves unsuccessful. Next a genetic algorithm (GA) synthesis procedure is introduced that is capable of determining the optimal set of element excitation phases required to yield a desired or specified far-field radiation pattern. The results of this GA phase-only optimization are shown to yield the desired main beam steered to the correct angle for this nine-element linear array mounted on a circularly cylindrical platform. The GA radiation pattern synthesis procedure introduced appears to be a highly effective means of correcting for platform effects on the individual element patterns of a conformal phased array.
引用
收藏
页码:1054 / 1062
页数:9
相关论文
共 19 条
[1]
A technique for analyzing radiation from conformal antennas mounted on arbitrarily-shaped conducting bodies [J].
Arakaki, DY ;
Werner, DH ;
Mittra, R .
JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS, 2000, 14 (11) :1505-1523
[2]
Balanis C.A., 2011, Antenna theory: analysis and design, V3rd
[3]
Power synthesis of conformal arrays by a generalised projection method [J].
Bucci, OM ;
DElia, G ;
Romito, G .
IEE PROCEEDINGS-MICROWAVES ANTENNAS AND PROPAGATION, 1995, 142 (06) :467-471
[4]
ANTENNA PATTERN SYNTHESIS USING WEIGHTED LEAST-SQUARES [J].
CARLSON, BD ;
WILLNER, D .
IEE PROCEEDINGS-H MICROWAVES ANTENNAS AND PROPAGATION, 1992, 139 (01) :11-16
[5]
Elliott R.S., 2003, Antenna theory and design, P1
[6]
Pattern synthesis of conformal arrays by the simulated annealing technique [J].
Ferreira, JA ;
Ares, F .
ELECTRONICS LETTERS, 1997, 33 (14) :1187-1189
[7]
Least squares pattern synthesis for conformal arrays [J].
Fletcher, PN ;
Dean, M .
ELECTRONICS LETTERS, 1998, 34 (25) :2363-2365
[8]
THINNED ARRAYS USING GENETIC ALGORITHMS [J].
HAUPT, RL .
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1994, 42 (07) :993-999
[9]
Hessel A., 1969, ANTENNA THEORY
[10]
Johnson R.C., 1984, Antenna Engineering Handbook, V2nd ed.