We present in this article a very low loss silicon micromachined coplanar t
echnology. The design of the structures was achieved through three dimensio
nal finite element method electromagnetic simulations. A silicon micromachi
ned cavity resonating at 95 GHz with a quality factor greater than 9000 was
realized. (C) 2000 American Vacuum Society. [S0734-2101(00)09202-2].