Title :
A vertical W-band surface-micromachined Yagi-Uda antenna
Author :
Yoon, Y. ; Pan, Bo ; Papapolymerou, J. ; Tentzeris, M.M. ; Allen, M.G.
Author_Institution :
Sch. of Electr. & Comput. Eng., Georgia Inst. of Technol., Atlanta, GA, USA
Abstract :
A vertical W-band surface-micromachined Yagi-Uda monopole array is proposed and implemented for the first time. The monopoles stand on a high-k soda-lime glass substrate and are fed by a coplanar waveguide. The geometry functions as a vertically placed Yagi-Uda antenna due to the image theory. The performance of the vertical Yagi-Uda is to be superior to conventional W-band printed antennas due to minimum substrate wave effects. A successful implementation of the vertical Yagi-Uda structure is demonstrated using high-aspect-ratio surface micromachining fabrication technologies. The test results of a 5 element structure demonstrate a 10-dB-impedance-bandwidth of 12% at 100 GHz. A directivity of 8.2 dBi is projected for this prototype.
Keywords :
Yagi antenna arrays; antenna radiation patterns; directive antennas; electric impedance; glass; micromachining; millimetre wave antenna arrays; monopole antenna arrays; substrates; 100 GHz; W-band antenna; W-band printed antennas; coplanar waveguide feed; directivity; high-aspect-ratio surface micromachining fabrication technologies; high-k soda-lime glass substrate; impedance-bandwidth; monopole array; radiation pattern; substrate wave effects; vertical W-band surface-micromachined Yagi-Uda antenna; vertical Yagi-Uda antenna; Antenna theory; Coplanar waveguides; Fabrication; Geometry; Glass; High K dielectric materials; High-K gate dielectrics; Micromachining; Prototypes; Testing;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2005 IEEE
Print_ISBN :
0-7803-8883-6
DOI :
10.1109/APS.2005.1552322
