Steady state solution of NFC model with nonlinear load using PEEC. Issue 3 (1st February 2022)

• Record Type: Journal Article
• Authors: Kvasnicka, Samuel; Bauernfeind, Thomas; Baumgartner, Paul; Torchio, Riccardo
• Is Part Of: Compel. Volume 41:Issue 3(2022)
• Page Start: 840
• Page End: 851
• Publication Date: 2022-02-01
• Subjects: Circuit analysis -- Transient analysis -- Time-domain modelling -- Equivalent circuit model -- Computational electromagnetics -- Field circuit models -- Near field communication -- Nonlinear resistive loads -- Full-wave rectifier -- Partial element equivalent circuit method -- Modified nodal analysis -- Differential-algebraic equation -- Backward differentiation formula -- Single shooting method; Electrical engineering -- Data Processing -- Periodicals; Electrical engineering -- Mathematics -- Periodicals; Electrical engineering -- Periodicals; Electronics -- Data Processing -- Periodicals; Electronics -- Mathematics -- Periodicals; 621.3
• DOI: 10.1108/COMPEL-03-2021-0087
• Languages: English
• ISSNs: 0332-1649

Abstract

Abstract : Purpose: The purpose of this paper is to show that the computation of time-periodic signals for coupled antenna-circuit problems can be substantially accelerated by means of the single shooting method. This allows an efficient analysis of nonlinearly loaded coupled loop antennas for near field communication (NFC) applications. Design/methodology/approach: For the modelling of electrically small coupled field-circuit problems, the partial element equivalent circuit (PEEC) method shows to be very efficient. For analysing the circuit-like description of the coupled problem, this paper developed a generalised modified nodal analysis (MNA) and applied it to specific NFC problems. Findings: It is shown that the periodic steady state (PSS) solution of the resulting differential-algebraic system can be computed very time efficiently by the single shooting method. A speedup of roughly 114 to conventional transient approaches can be achieved. Practical implications: The proposed approach appears to be an efficient alternative for the computation of time PSS solutions for nonlinear circuit problems coupled with discretised conductive structures, where the homogeneous solution is not of interest. Originality/value: The present paper explores the implementation and application of the shooting method for nonlinearly loaded coupled antenna-circuit problems based on the PEEC method and shows the efficiency of this approach.