300-GHz CMOS-Based Wireless Link Using 40-dBi Cassegrain Antenna for IEEE Standard 802.15.3d

In this paper, a 1-meter high-speed-wireless data transmission, employing a 300-GHz CMOS RF front end and Cassegrain antennas, is demonstrated. To improve system SNR of the CMOS RF front end, high-gain antennas are designed for the 300-GHz frequency bands. The antenna shows the peak antenna gain of 40 dBi and the 3-dB beamwidth of 1.3 degrees, within the diameter of 6 cm. In the wireless demonstration, the maximum data rate of 36 Gb/s with QPSK modulation is achieved due to high gain antennas.