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A new dual-primal finite element tearing and interconnecting (FETI-DP) method is presented for the analysis of phased-array antennas. The method incorporates the second-order transmission condition (SOTC) into the dual-primal framework at a negligible cost. A phased array consisting of broadband antennas is simulated to demonstrate the good accuracy and fast convergence of the new FETI-DP method.
Wave propagation mechanisms in a lossy dielectric rod array are examined using full-wave simulation and homogenization theory. Both approaches show that a slab mode and an air mode propagate in the structure with different phase velocities. The propagation constants, attenuation constants, and field distributions of these two dominant mechanisms are extracted from simulation data and compared to those...
This paper proposes a new hybrid algorithm, which is referred to as FETI-DP-BI, to solve antenna array radiation and scattering problems in electromagnetic simulation. Our mathematical treatment is based on the combination of the dual-primal finite element tearing and interconnecting (FETI-DP) and boundary integral (BI) methods. Decomposed interior FE domains are glued together by the Robin transmission...
Multicast communications have become more and more important recently, especially in their applications in multimedia communication, quality of service (QoS), video conferencing, and distance education. In a point-to-point (PTP) optical communication system, how to provide multicast services is an essential issue. There are some advantages of active splitter/active combiner (AS/AC) networks, such...
This paper presents a method for torque calculation based on a geometrical interpretation of the Stieltjes integral, which can be interpreted as the geometrical area of a (B,H) plot for the magnet used in the rotor, with the circumferential coordinate (angle) as the running parameter. The available maximum torque is discussed for a SPM type and a Halbach-arrayed configuration, followed by its confirmation...
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