Design of CCAA for Optimized Difference Patterns
G. S. K. Gayatri Devi1, S. Krishna Veni2

1Dr. G. S. K. Gayatri Devi*, ECE, MallaReddy Engineering College(A), Hyderabad, India.
2Dr S. Krishna Veni*, ECE, Gayatri Vidya Parishad College for Degree and PG Courses(A), Visakhapatnam, India.
Manuscript received on May 16, 2020. | Revised Manuscript received on May 21, 2020. | Manuscript published on June 10, 2020. | PP: 613-617 | Volume-9 Issue-8, June 2020. | Retrieval Number: H6558069820/2020©BEIESP | DOI: 10.35940/ijitee.H6558.069820
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Abstract: Difference patterns find applications in target tracking radars for accurate target detection. Such patterns must be generated with minimum sidelobe levels to reduce the effect of interfering signals like clutter, jamming signals. The present work is focused on designing concentric circular arrays(CCA) of practical elements producing low sidelobe difference patterns using thinning. Simulated results are presented for 6 ring and 7 ring concentric circular antenna arrays. 
Keywords: Concentric circular antenna arrays (CCAA), Differential Evolution Algorithm, Difference patterns, Peak Sidelobe level.
Scope of the Article: Smart Antenna