A patch antenna, a metamaterial patch antenna and a proposed metamaterial patch antenna, are simulated and compared. Simulation results show that the proposed antenna can concentrate so well radiation energy into broa...A patch antenna, a metamaterial patch antenna and a proposed metamaterial patch antenna, are simulated and compared. Simulation results show that the proposed antenna can concentrate so well radiation energy into broadside direction that the antenna gain is increased and the side lobe level is decreased. Therefore, the gain of the proposed metamaterial patch antenna is improved by 2 dB than that of the ordinary metanmterial patch antenna.展开更多
The target fuel depletion and energy gain of inertial confinement fusion （ICF） for uniform spherical target of D-SHe advanced fuel compressed by high power laser-beam have been derived and calculated in this article...The target fuel depletion and energy gain of inertial confinement fusion （ICF） for uniform spherical target of D-SHe advanced fuel compressed by high power laser-beam have been derived and calculated in this article. Our numerical calculations show that if only the approximation of small internal energy of central spark and high inertial confinement parameter Hr = ρRF is valid for typical efficiency parameters of reactor system, the net fusion energy output can be possible for ICF of D-3He target. Inversely, under the approxi- mation of large internal energy of central spark and low HF it will not be possible to get net fusion energy output for ICF of D-^3He target. Hereby, an indirect proof of the scientific basis of fast ignition（FI） philosophy has been provided as a matter of fact.展开更多
基金supported bythe IT R&D programof MKE/ⅡTA:Study of technologies for improving the RF spectrum characteristics by using the meta-electromagnetic structurec(2009-F-033-01)
文摘A patch antenna, a metamaterial patch antenna and a proposed metamaterial patch antenna, are simulated and compared. Simulation results show that the proposed antenna can concentrate so well radiation energy into broadside direction that the antenna gain is increased and the side lobe level is decreased. Therefore, the gain of the proposed metamaterial patch antenna is improved by 2 dB than that of the ordinary metanmterial patch antenna.
基金Supported by National Natural Science Foundation of China（Special Exploring Foundation Preject, 2003AA84ta01 ）
文摘The target fuel depletion and energy gain of inertial confinement fusion （ICF） for uniform spherical target of D-SHe advanced fuel compressed by high power laser-beam have been derived and calculated in this article. Our numerical calculations show that if only the approximation of small internal energy of central spark and high inertial confinement parameter Hr = ρRF is valid for typical efficiency parameters of reactor system, the net fusion energy output can be possible for ICF of D-3He target. Inversely, under the approxi- mation of large internal energy of central spark and low HF it will not be possible to get net fusion energy output for ICF of D-^3He target. Hereby, an indirect proof of the scientific basis of fast ignition（FI） philosophy has been provided as a matter of fact.
