This book focuses on determination of scattering of parallel-fed planar dipole arrays in terms of reflection and transmission coefficients at different levels of the array system. In aerospace vehicles, the phased arrays are often in planar configuration. The radar cross section (RCS) of the vehicle is mainly due to its structure and the antennas mounted over it. There can be situation when the signatures due to antennas dominate over the structural RCS of the platform. This necessitates the study towards the reduction and control of antenna/ array RCS. The planar dipole array is considered as a stacked linear dipole array. A systematic, step-by-step approach is used to determine the RCS pattern including the finite dimensions of dipole antenna elements. The mutual impedance between the dipole elements for planar configuration is determined. The scattering till second-level of couplers in parallel feed network is taken into account. The phase shifters are modelled as delay line. All the couplers in the feed network are assumed to be four port devices. It is shown that the array RCS can be reduced considerably for a low observable platform by an optimization of array design parameters even in the presence of mutual coupling. This book presents a systematic step-by-step analytical formulation for RCS of planar half-wavelength centre-fed dipole arrays through various schematics and illustrations. The analytical description and analysis provided in this book should be useful forstudents, researchers, and design engineers of phased arrays.

Presents a systematic step-by-step formulation of parallel-fed planar dipole antenna arrays for low-observable platforms Includes schematics and colored illustrations Covers both description and analysis of results Includes supplementary material: sn.pub/extras

Autorentext

Hema Singh is currently working as Principal Scientist in Centre for Electromagnetics of CSIR-National Aerospace Laboratories (NAL), Bangalore, India. Before NAL, she was Lecturer in EEE, BITS, Pilani, India during 2001-2004. She obtained her Ph.D. degree in Electronics Engineering from IIT-BHU, Varanasi India in 2000. Her active area of research is Computational Electromagnetics for Aerospace Applications. More specifically, the topics she has contributed to are GTD/UTD, EM analysis of propagation in an indoor environment, Phased Arrays, Conformal Antennas, Radar Cross Section (RCS) Studies including Active RCS Reduction. She has received the Best Woman Scientist Award at CSIR-NAL, Bangalore for period of 2007-2008 for her contribution in area of phased antenna array, adaptive arrays, and active RCS reduction. Dr. Singh has co-authored nine books, one book chapter, and over 170 scientific research papers and technical reports. Mausumi Dutta obtained M.Tech. in RF & Microwave Engineering from RV College of Engineering, Visvesvaraya Technological University Bangalore. She obtained her B.Tech. (ECE) degree in 2012 from ICFAI University, Tripura. She has worked on radar cross section based studies, and probe suppression in phased arrays. Neethu P.S. obtained B.Tech. (ECE) and M.Tech. in Communication Engineering from University of Calicut, Kerela, India. She is a Project Scientist at the Centre for Electromagnetics (CEM) of CSIR-National Aerospace Laboratories, Bangalore where she works on probe suppression in phased arrays on planar and non-planar surfaces, and RCS studies for aerospace vehicles.

Inhalt
Introduction.- RCS of Parallel-Fed Planar Dipole Array.- Results and Discussion.- Conclusion.