Silicon Resonant Antenna
  The need for high data rate communication systems has been dramatically increasing in recent years. The millimeter-wave bands (such as 60 GHz) have been investigated for wireless high data rate transmission. At these frequencies, the conductor loss is significant which makes dielectric resonator antenna (DRA) a good replacement for microstrip patch antennas currently in use. Moreover, use of silicon as the dielectric material in a DRA provides the great feature of bandwidth tunability through carrier density modulation. In this paper, we present experimental and theoretical studies of antennas made from silicon. 
Ali Ayazi, and Bahram Jalali