Title :
Nondiffracting Millimeter Waves Beams Generated by Diffractive Optical Elements
Author :
Yu, Y.Z. ; Dou, W.B.
Author_Institution :
State Key Lab. of Millimeter Waves, Southeast Univ., Nanjing
Abstract :
In our paper, diffractive optical elements (DOE´s) are designed for generation nondiffracting millimeter wave beams. In order to reduce the computational burden, the design tool, which employs a microgenetic algorithm (MGA) for optimal design of DOE´s in conjunction with a body-of-revolution finite-difference time-domain (BOR-FDTD) method for rigorous analysis of the diffracted fields, has been introduced for the first time to obtain the DOE´s profiles. Numerical results demonstrate that the field distributions diffracted by the designed DOE´s agree well with that of desired on the output plane.
Keywords :
diffractive optical elements; genetic algorithms; millimetre wave devices; body-of-revolution finite-difference time-domain method; diffracted fields; diffractive optical elements; field distributions; microgenetic algorithm; nondiffracting millimeter wave beams; Acoustic beams; Acoustic diffraction; Algorithm design and analysis; Apertures; Finite difference methods; Microwave generation; Millimeter wave technology; Optical diffraction; Time domain analysis; US Department of Energy;
Conference_Titel :
Microwave Conference, 2008. EuMC 2008. 38th European
Conference_Location :
Amsterdam
Print_ISBN :
978-2-87487-006-4
DOI :
10.1109/EUMC.2008.4751612
