TY - GEN
T1 - A decoupling method in characteristic modes tracking
AU - Chen, Pengyu
AU - He, Mang
AU - Zhang, Chuanfang
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2018/7/25
Y1 - 2018/7/25
N2 - The theory of characteristic modes (TCM) is a powerful tool for antenna designers to analyze the radiators systematically, which provides a set of orthogonal eigenmodes and corresponding eigenvalues determined entirely by a structure's geometry and a particular frequency. So tracking the CMs at discrete frequency points over a frequency range is necessary for any wideband modal analysis of complex structure. However, it is still a challenge to track the modes when their eigenvalues are in close proximity. The degeneracy (close eigenvalue) of these modes always leads to an inaccurate eigenvalue tracking result and an unsmooth modal excitation coefficient curve for existing tracking algorithms, especially when frequency increment step is reduced. In this paper, we propose a decoupling method to alleviate the problem by decomposing a pair of degenerated modes into two new modes with consistent evolution of surface current distributions, accurate eigenvalue tracking results and smooth curves of modal excitation coefficients.
AB - The theory of characteristic modes (TCM) is a powerful tool for antenna designers to analyze the radiators systematically, which provides a set of orthogonal eigenmodes and corresponding eigenvalues determined entirely by a structure's geometry and a particular frequency. So tracking the CMs at discrete frequency points over a frequency range is necessary for any wideband modal analysis of complex structure. However, it is still a challenge to track the modes when their eigenvalues are in close proximity. The degeneracy (close eigenvalue) of these modes always leads to an inaccurate eigenvalue tracking result and an unsmooth modal excitation coefficient curve for existing tracking algorithms, especially when frequency increment step is reduced. In this paper, we propose a decoupling method to alleviate the problem by decomposing a pair of degenerated modes into two new modes with consistent evolution of surface current distributions, accurate eigenvalue tracking results and smooth curves of modal excitation coefficients.
UR - http://www.scopus.com/inward/record.url?scp=85051143264&partnerID=8YFLogxK
U2 - 10.1109/APCAP.2017.8420517
DO - 10.1109/APCAP.2017.8420517
M3 - Conference contribution
AN - SCOPUS:85051143264
T3 - 2017 IEEE 6th Asia-Pacific Conference on Antennas and Propagation, APCAP 2017 - Proceeding
SP - 1
EP - 3
BT - 2017 IEEE 6th Asia-Pacific Conference on Antennas and Propagation, APCAP 2017 - Proceeding
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 6th IEEE Asia-Pacific Conference on Antennas and Propagation, APCAP 2017
Y2 - 16 October 2017 through 19 October 2017
ER -