Dual band 18.5Gbps transmitter at 60GHz and 80GHz in 65nm CMOS

A dual band transmitter implemented using a 65 nm CMOS technology at 60 GHz and 80 GHz is presented. A BPSK modulation scheme is used in each band realized by double balanced Gilbert cells, followed by output buffers and transformer-based diplexer. Output power of up to 5.5 dBm and 0 dBm were achieved in the low band (50-71 GHz) and high band (75-100 GHz), respectively. Limited by measurement equipment, BER<;10^-12 was achieved concurrently at the two bands with data rates of up to 10 Gbps and 8.5 Gbps at the low and high bands, respectively. The design draws 150 mA from a 2 V supply and takes up a core area of 300*420 μm².