Title :
Design and simulation of MEMS-based CPW-fed unidirectional antenna array with air bridges
Author :
Su, Zhijuan ; Ding, Guifu ; Lu, Wenjing ; Chen, Jifeng
Author_Institution :
Nat. Key Lab. of Micro/Nano Fabrication Technol., Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
MEMS-based CPW-fed unidirectional antenna array with planar air bridges is proposed in this paper. The performance of the CPW-based feeding network is improved with air bridges fabricated at the discontinuity of T-junctions and bends in the CPW-based feeding network. The simulated impedance bandwidth is from 34.4 GHz to 35.9 GHz with S11<;-10 dB. By adding four reflecting metal patches with circular slot in the center, the simulated gain of the antenna increases to 12.2 dB. Ansoft HFSS, a high frequency structure simulation software based on the finite element method, is used to simulate and optimize the performance of the antenna array.
Keywords :
antenna arrays; antenna feeds; bridge circuits; coplanar waveguides; electrical engineering computing; finite element analysis; micromechanical devices; Ansoft HFSS; CPW-based feeding network; MEMS-based CPW-fed unidirectional antenna array; T-junction discontinuity; bandwidth 34.4 GHz to 35.9 GHz; finite element method; gain 12.2 dB; high frequency structure simulation software; loss 10 dB; planar air bridges;
Conference_Titel :
Nano/Micro Engineered and Molecular Systems (NEMS), 2010 5th IEEE International Conference on
Conference_Location :
Xiamen
Print_ISBN :
978-1-4244-6543-9
DOI :
10.1109/NEMS.2010.5592166
