TY - JOUR
T1 - Characteristic Mode and Reduced Order Modeling at Low Frequencies
AU - Dai, Qi I.
AU - Gan, Hui U.I.
AU - Liu, Qin S.
AU - Chew, Weng Cho
N1 - Funding Information:
This work was supported in part by the National Science Foundation under Award 1609195, in part by the Research Grants Council of Hong Kong under Grant GRF 711609 and Grant GRF 711508, and in part by the University Grants Council of Hong Kong under Contract AoE/P-04/08. Recommended for publication by Associate Editor D. Becker upon evaluation of reviewers' comments.
Publisher Copyright:
© 2017 IEEE.
PY - 2017/5
Y1 - 2017/5
N2 - We present a stabilized theory to address the breakdown or inaccuracy issue for low-frequency (LF) characteristic mode analysis (CMA). At LFs, to properly preserve the governing quasi-static circuit physics, the eigenvalue decomposition technique is leveraged to formulate a stabilized eigenvalue problem regarding low-order CMs, which dominate the scattering, radiation, and energy storage properties of arbitrarily shaped conducting bodies. Several efficient schemes are introduced for the computation of the low-order CMs in the LF regime, including the augmented electric-field integral equation, the potential (A - Φ)-based integral equation, and the Calderón multiplicative preconditioner. The LF stabilized CMA enables one to understand and interpret the behaviors of complicated conducting objects with a reduced "modal" representation at LFs, which offers an insightful tool for reduced order modeling in circuit design and analysis.
AB - We present a stabilized theory to address the breakdown or inaccuracy issue for low-frequency (LF) characteristic mode analysis (CMA). At LFs, to properly preserve the governing quasi-static circuit physics, the eigenvalue decomposition technique is leveraged to formulate a stabilized eigenvalue problem regarding low-order CMs, which dominate the scattering, radiation, and energy storage properties of arbitrarily shaped conducting bodies. Several efficient schemes are introduced for the computation of the low-order CMs in the LF regime, including the augmented electric-field integral equation, the potential (A - Φ)-based integral equation, and the Calderón multiplicative preconditioner. The LF stabilized CMA enables one to understand and interpret the behaviors of complicated conducting objects with a reduced "modal" representation at LFs, which offers an insightful tool for reduced order modeling in circuit design and analysis.
KW - Admittance extraction
KW - characteristic mode analysis (CMA)
KW - eigenvalue decomposition (EVD)
KW - low frequency (LF)
KW - reduced order modeling
UR - http://www.scopus.com/inward/record.url?scp=85014258576&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85014258576&partnerID=8YFLogxK
U2 - 10.1109/TCPMT.2017.2659699
DO - 10.1109/TCPMT.2017.2659699
M3 - Article
AN - SCOPUS:85014258576
SN - 2156-3950
VL - 7
SP - 669
EP - 677
JO - IEEE Transactions on Components, Packaging and Manufacturing Technology
JF - IEEE Transactions on Components, Packaging and Manufacturing Technology
IS - 5
M1 - 7864409
ER -