Title :
Genetically-engineered meanderline twist reflector
Author :
Han, Kyu Y. ; Lai, B.A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Florida Inst. of Technol., Melbourne, FL
Abstract :
A meanderline polarization twist reflector designed through genetic optimization is presented. Modeled and measured reflection response of electric field components parallel and perpendicular to the meanderline axis are reported, with excellent agreement. Polarization conversion efficiency greater than 98% is demonstrated over 18% bandwidth at 12.9 GHz for a meanderline on substrate of thickness t <0.10lambdao. Dual-band performance is revealed by considering insertion loss of co-polarized reflection for an incident electric field oriented 45deg from the meanderline axis. Parameter-dependent sensitivity at the two resonant frequencies is reported, providing a means for independent control of the lower and upper frequency response.
Keywords :
broadband antennas; electromagnetic wave polarisation; genetic algorithms; microwave antennas; reflector antennas; frequency 12.9 GHz; genetic algorithm optimization; genetically-engineered meanderline; low-profile broadband polarization; twist reflector; Bandwidth; Design optimization; Dual band; Electric variables measurement; Genetics; Insertion loss; Performance loss; Polarization; Reflection; Resonant frequency;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2041-4
Electronic_ISBN :
978-1-4244-2042-1
DOI :
10.1109/APS.2008.4619113
