A Simple Architecture of Low Voltage GHz BiCMOS Four-Quadrant Analogue Multiplier using Complementary Voltage Follower

A new architecture of simple low voltage BiCMOS fourquadrant multiplier is proposed and analyzed. It operates with ±1.5V power supplies and 3Vp-p fully input signal swings. Simulation results based on AMS 0.8μm n-well BiCMOS process parameters are given to verify the theoretical analysis. The architecture of four multipliers typically have a nonlinearity error less than 1% over ±1.5V input range and a −3dB bandwidth of several GHz. The total harmonic distortion for frequencies up to 4GHz is less than 6% with maximum input voltage at ±1.5V. Simple structure, low-voltage and low power capability, and high performance make the proposed multiplier quite feasible in many GHz nonlinear signal processing applications.