TY - GEN
T1 - Adaptive integral method for hybrid FE/BI modeling of 3D doubly periodic structures
AU - Eibert, Thomas F.
AU - Volakis, John L.
N1 - Publisher Copyright:
© 1998 IEEE.
PY - 1998
Y1 - 1998
N2 - The application of hybrid finite element/boundary integral methods to infinite periodic structures (antennas or frequency selective surfaces) is very attractive. For large unit cell apertures there is a CPU and memory bottleneck. To alleviate this we present an acceleration and memory reduction scheme for the boundary integral (BI) portion of the hybrid FE/BI method. The approach is based on the adaptive integral method (AIM) and is adapted here to periodic structures. For the given problem, AIM results in low O(ns) storage and O(ns logns) CPU time requirements for the execution of the matrix vector products in the applied iterative solver (ns=number of surface unknowns). The paper focuses especially on AIM issues related to infinite periodic structures. Also, we present CPU time and storage comparisons with the more conventional implementation of the FE/BI method.
AB - The application of hybrid finite element/boundary integral methods to infinite periodic structures (antennas or frequency selective surfaces) is very attractive. For large unit cell apertures there is a CPU and memory bottleneck. To alleviate this we present an acceleration and memory reduction scheme for the boundary integral (BI) portion of the hybrid FE/BI method. The approach is based on the adaptive integral method (AIM) and is adapted here to periodic structures. For the given problem, AIM results in low O(ns) storage and O(ns logns) CPU time requirements for the execution of the matrix vector products in the applied iterative solver (ns=number of surface unknowns). The paper focuses especially on AIM issues related to infinite periodic structures. Also, we present CPU time and storage comparisons with the more conventional implementation of the FE/BI method.
UR - http://www.scopus.com/inward/record.url?scp=0031634357&partnerID=8YFLogxK
U2 - 10.1109/APS.1998.690907
DO - 10.1109/APS.1998.690907
M3 - Conference contribution
AN - SCOPUS:0031634357
SN - 0780344782
SN - 9780780344785
T3 - IEEE Antennas and Propagation Society International Symposium, 1998 Digest - Antennas: Gateways to the Global Network - Held in conjunction with: USNC/URSI National Radio Science Meeting
SP - 1754
EP - 1757
BT - IEEE Antennas and Propagation Society International Symposium, 1998 Digest - Antennas
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 1998 IEEE Antennas and Propagation Society International Symposium, APSURSI 1998
Y2 - 21 June 1998 through 26 June 1998
ER -