A Si 2-GHz 5-bit LO-phase-shifting downconverter for adaptive antennas

Abstract

In a real circuit, the bridge impedances should be low to make parasitics negligible, and the current consumption A RC-bridge arbitrary-phase switching circuit of the buffers should be large to drive them, However, the is proposed and fabricated as a 2-GHz 5-bit phase shifter using silicon BiCMOS technology. The maximum phase error is 6.5 degrees, which is slightly larger than 1/2 LSB. measured result is still than in the previous work [31.