Spatial Maps of Reactive Energy Density around Antenna Arrays: An em Lagrangian Approach

Sarkar, D and Antar, YMM (2022) Spatial Maps of Reactive Energy Density around Antenna Arrays: An em Lagrangian Approach. In: 2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022, 10 - 15 July 2022, Denve, pp. 1236-1237.

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Abstract

In this paper, we present an EM Lagrangian based approach to quantify the distribution of reactive energy density around generic antennas, specifically multi-port excited arrays. FDTD-computed electric and magnetic field values are first used to obtain EM Lagrangian density in the antenna near-field, which is further time-averaged to obtain spatial patterns of capacitive/inductive reactive energy density. We demonstrate the significant alterations in reactive energy density distributions for thin-wire dipole based arrays, considering different port-excitation conditions and use of parasitic reflectors/directors.

Item Type:	Conference Paper
Publication:	2022 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, AP-S/URSI 2022 - Proceedings
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to the Institute of Electrical and Electronics Engineers Inc.
Keywords:	Directional patterns (antenna); Lagrange multipliers, Antenna near field; Electric and magnetic fields; Energy density; Field values; Lagrangian; Lagrangian approaches; Lagrangian density; Multi-port; Spatial maps; Time-averaged, Antenna arrays
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	02 Nov 2022 05:23
Last Modified:	02 Nov 2022 05:23
URI:	https://eprints.iisc.ac.in/id/eprint/77784

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