A Hybrid Approach to the Synthesis of Subarrayed Monopulse Linear Arrays

In this paper, a hybrid approach for the synthesis of the ldquooptimalrdquo compromise between sum and difference patterns for subarrayed monopulse antennas is presented. First, the subarray configuration is determined by exploiting the knowledge of the optimum difference mode coefficients to reduce the dimension of the searching space. In the second step, the subarray weights are computed by means of a convex programming procedure, which takes advantages from the convexity, for a fixed clustering, of the problem at hand. A set of representative results is reported to assess the effectiveness of the proposed approach. Comparisons with state-of-the-art techniques are also presented.

[1]  Derek A. McNamara,et al.  Synthesis of sub-arrayed monopulse linear arrays through matching of independently optimum sum and difference excitations , 1988 .

[2]  T. Taylor Design of line-source antennas for narrow beamwidth and low side lobes , 1955 .

[3]  I. Gupta,et al.  Effect of mutual coupling on the performance of adaptive arrays , 1983 .

[4]  C. Balanis,et al.  Mutual Coupling Compensation in UCAs: Simulations and Experiment , 2006, IEEE Transactions on Antennas and Propagation.

[5]  Paolo Rocca,et al.  Synthesis of monopulse antennas through iterative contiguous partition method , 2007 .

[6]  Paolo Rocca,et al.  Hybrid Approach for Sub-arrayed Monopulse Antenna Synthesis , 2008 .

[7]  Thomas Svantesson,et al.  Modeling and estimation of mutual coupling in a uniform linear array of dipoles , 1999, 1999 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings. ICASSP99 (Cat. No.99CH36258).

[8]  A. Massa,et al.  Optimization of the difference patterns for monopulse antennas by a hybrid real/integer-coded differential evolution method , 2005, IEEE Transactions on Antennas and Propagation.

[9]  P. Rocca,et al.  Synthesis of Large Monopulse Linear Arrays Through a Tree-Based Optimal Excitations Matching , 2007, IEEE Antennas and Wireless Propagation Letters.

[10]  Bruce E. Hajek,et al.  Cooling Schedules for Optimal Annealing , 1988, Math. Oper. Res..

[11]  C.L. Dolph,et al.  A Current Distribution for Broadside Arrays Which Optimizes the Relationship between Beam Width and Side-Lobe Level , 1946, Proceedings of the IRE.

[12]  E. Moreno,et al.  Optimal compromise among sum and difference patterns through sub-arraying , 1996, IEEE Antennas and Propagation Society International Symposium. 1996 Digest.

[13]  T. Isernia,et al.  An Effective Hybrid Approach for the Optimal Synthesis of Monopulse Antennas , 2007, IEEE Transactions on Antennas and Propagation.

[14]  R. Collin Antennas and Radiowave Propagation , 1985 .

[15]  E. Moreno,et al.  Subarray weighting for the difference patterns of monopulse antennas: joint optimization of subarray configurations and weights , 2001 .

[16]  P. Rocca,et al.  An Innovative Approach Based on a Tree-Searching Algorithm for the Optimal Matching of Independently Optimum Sum and Difference Excitations , 2008, IEEE Transactions on Antennas and Propagation.

[17]  Tommaso Isernia,et al.  Optimal synthesis of difference patterns subject to arbitrary sidelobe bounds by using arbitrary array antennas , 2005 .

[18]  Walter D. Fisher On Grouping for Maximum Homogeneity , 1958 .

[19]  T. Isernia,et al.  An effective approach for the optimal focusing of array fields subject to arbitrary upper bounds , 2000 .

[20]  E. Bayliss Design of monopulse antenna difference patterns with low sidelobes , 1968 .

[21]  A. Villeneuve,et al.  Taylor patterns for discrete arrays , 1984 .

[22]  Derek A. McNamara,et al.  Direct synthesis of optimum difference patterns for discrete linear arrays using Zolotarev distributions , 1993 .