Title :
Wideband design of a circularly-polarized plate-laminated waveguide slot array antenna
Author :
Yamamoto, Takayuki ; Zhang, M. ; Hirokawa, Jiro ; Hirano, Takuichi ; Ando, Makoto
Author_Institution :
Dept. of Electr. & Electron. Eng., Tokyo Inst. of Technol., Tokyo, Japan
Abstract :
A conventional circularly-polarized plate-laminated waveguide slot array antenna achieved 3.3% bandwidth for antenna efficiency more than 80% and 4.2% bandwidth for axial ratio less than 3dB in 60-GHz band. In this paper, the radiating part is designed for wider bandwidth by genetic algorithm using fast analysis method by the method of moments. This design of the 2×2-element array is improved 14.6% bandwidth for less than -14dB reflection and 3dB axial ratio. The 16×16-element array is improved 16.6% bandwidth for the axial ratio and 17.2% bandwidth for the antenna efficiency.
Keywords :
genetic algorithms; millimetre wave antenna arrays; slot antenna arrays; waveguide antenna arrays; antenna efficiency; axial ratio; circularly-polarized plate-laminated waveguide slot array antenna; fast analysis method; frequency 60 GHz; genetic algorithm; wideband design; Antenna arrays; Apertures; Arrays; Bandwidth; Gain; Reflection; Slot antennas; circularly polarization; hexagon cavity; waveguide slot array; wideband design;
Conference_Titel :
Antennas and Propagation (ISAP), 2014 International Symposium on
Conference_Location :
Kaohsiung
DOI :
10.1109/ISANP.2014.7026486
